River Levels - All Areas
Here's the river level information for the All Areas area.
Return to river level area selection.
| River | Gague | Current | Low | High | Trend | Date/Time |
|---|---|---|---|---|---|---|
| Addlestone Bourne | Grants Bridge | 0.35 m (Low) | 0.33 | 1.15 | Unchanged | 20th May 2012 at 15:45 |
| Addlestone Bourne | Addlestone | 0.10 m (Low) | 0.07 | 0.45 | Falling | 20th May 2012 at 15:45 |
| Adur | Beeding Bridge | 0.66 m (Low) | 0.11 | 3.32 | Rising | 20th May 2012 at 15:30 |
| Adur | Hatterell Bridge | 0.28 m (Low/Medium) | 0.05 | 0.95 | Falling | 20th May 2012 at 10:30 |
| Adur | Sakeham Weir | 0.40 m (Low) | 0.16 | 1.35 | Rising | 20th May 2012 at 15:30 |
| Adur | Shoreham | 0.00 m (Very High) | 0.00 | 0.00 | Falling | 20th May 2012 at 15:30 |
| Adur | Chates Weir | 1.93 m (Medium) | 0.25 | 2.80 | Rising | 20th May 2012 at 15:30 |
| Adur | Merrions Weir Downstream | 2.03 m (Medium) | 0.25 | 3.00 | Rising | 9th March 2012 at 04:30 |
| Aeron | Aberaeron | 0.39 m (Low) | 0.24 | 0.89 | Rising | 20th May 2012 at 16:45 |
| Aeron | Talsarn | 0.32 m (Low) | 0.25 | 0.92 | Falling | 20th May 2012 at 16:45 |
| Afan | Marcroft Weir | 0.41 m (Low) | 0.21 | 1.18 | Rising | 20th May 2012 at 16:45 |
| Afan | Cwmafan | 0.21 m (Low) | 0.13 | 0.67 | Falling | 20th May 2012 at 16:45 |
| Alconbury Brook | Hamerton | 0.09 m (Low) | 0.00 | 0.54 | Falling | 20th May 2012 at 06:30 |
| Alconbury Brook | Brampton Racecourse | 0.17 m (Low) | 0.00 | 0.73 | Falling | 20th May 2012 at 19:30 |
| Alconbury Brook | Alconbury Weston | 0.21 m (Low) | 0.15 | 0.86 | Falling | 20th May 2012 at 04:15 |
| Aldbourne | Ramsbury Main | 0.09 m (Low) | 0.07 | 0.17 | Falling | 20th May 2012 at 15:30 |
| Aldbourne | Ramsbury Side | 0.03 m (Low) | 0.03 | 0.32 | Falling | 20th May 2012 at 15:30 |
| Aldford brook | Lea Hall | 0.63 m (Low) | 0.58 | 1.72 | Rising | 20th May 2012 at 16:45 |
| Aldford brook - Upstream | Lea Hall | 0.63 m (Low) | 0.58 | 1.72 | Rising | 20th May 2012 at 16:45 |
| Aller Brook | Kingskerswell | 0.39 m (Medium/High) | 0.29 | 0.42 | Falling | 20th May 2012 at 04:15 |
| Alre | Drove Lane | 0.42 m (Medium) | 0.17 | 0.55 | Rising | 20th May 2012 at 04:30 |
| Alt | Kirkby | 0.29 m (Low) | 0.21 | 0.59 | Falling | 20th May 2012 at 21:00 |
| Alwen | Druid | 0.44 m (Low/Medium) | 0.27 | 0.87 | Rising | 20th May 2012 at 16:45 |
| Alwen | Druid | 0.44 m (Low/Medium) | 0.27 | 0.87 | Rising | 20th May 2012 at 16:45 |
| Alyn | Rhydymwyn | 0.56 m (Low/Medium) | 0.00 | 1.21 | Rising | 20th May 2012 at 16:45 |
| Alyn | Pont y Capel | 0.41 m (Low/Medium) | 0.18 | 0.65 | Rising | 20th May 2012 at 16:45 |
| Alyn | Pont y Capel | 0.41 m (Low/Medium) | 0.18 | 0.65 | Rising | 20th May 2012 at 16:45 |
| Alyn | Rhydymwyn | 0.56 m (Low/Medium) | 0.00 | 1.21 | Rising | 20th May 2012 at 16:45 |
| Amman | Pont Amman | 0.60 m (Low/Medium) | 0.40 | 1.09 | Rising | 20th May 2012 at 16:45 |
| Ampney Brook | Ampney St Peter | 0.37 m (Medium/High) | 0.04 | 0.46 | Rising | 20th May 2012 at 09:00 |
| Ampney Brook - Upstream | Sheeppen Bridge | 0.44 m (Medium) | 0.00 | 0.84 | Rising | 20th May 2012 at 09:00 |
| Ancholme | South Ferriby | 0.00 m (Very High) | 0.00 | 0.00 | Falling | 30th November -0001 at 00:00 |
| Ancholme | Brigg | 1.16 m (Low/Medium) | 0.48 | 2.38 | Rising | 20th May 2012 at 05:15 |
| Ancholme | Brandy Wharf | 0.45 m (Low/Medium) | 0.02 | 1.35 | Rising | 20th May 2012 at 04:00 |
| Arkle Beck | Reeth | 0.42 m (Medium) | 0.00 | 0.66 | Rising | 20th May 2012 at 18:15 |
| Arrow | Michaelchurch on Arrow | 0.30 m (Medium) | 0.05 | 0.48 | Falling | 20th May 2012 at 16:45 |
| Arrow | Michaelchurch on Arrow | 0.30 m (Medium) | 0.05 | 0.48 | Falling | 20th May 2012 at 16:45 |
| Arrow | Titley Mill | 0.27 m (Low/Medium) | 0.06 | 0.65 | Falling | 20th May 2012 at 18:00 |
| Arrowe Brook | Acton Lane | 0.18 m (Low/Medium) | 0.03 | 0.58 | Falling | 20th May 2012 at 15:00 |
| Arun | Arundel Queen St Bridge | 0.00 m (Very High) | 0.00 | 0.00 | Falling | 20th May 2012 at 15:30 |
| Arun | Houghton Bridge | 1.50 m (Very High) | 0.00 | 0.00 | Rising | 20th May 2012 at 15:30 |
| Arun | New Bridge | 7.22 m (Low) | 6.62 | 10.00 | Rising | 20th May 2012 at 15:30 |
| Arun | Pulborough Swan Bridge | 1.65 m (Low/Medium) | 0.67 | 3.71 | Rising | 20th May 2012 at 15:30 |
| Ash (Hertfordshire) | Furneux Pelham | 0.22 m (Low) | 0.17 | 1.00 | Falling | 20th May 2012 at 09:00 |
| Ash (Hertfordshire) | Little Hadham | 0.04 m (Low) | 0.00 | 1.00 | Falling | 20th May 2012 at 09:00 |
| Ash (Hertfordshire) | Mardock | 0.16 m (Low) | 0.10 | 0.57 | Falling | 20th May 2012 at 09:00 |
| Ash (Surrey) | Knowle Green | 0.44 m (Medium) | 0.36 | 0.48 | Rising | 20th May 2012 at 09:00 |
| Ash (Surrey) - Upstream | Staines Ash | 0.07 m (Low) | 0.05 | 0.25 | Falling | 20th May 2012 at 09:00 |
| Avonmouth Tide | Avonmouth | 0.00 m (Very High) | 0.00 | 0.00 | Falling | 20th May 2012 at 06:30 |
| Babingley River | Kilham's Bridge | 1.14 m (Medium) | 0.28 | 1.48 | Rising | 20th May 2012 at 06:00 |
| Badsey Brook | Offenham | 0.23 m (Low) | 0.14 | 1.11 | Falling | 20th May 2012 at 18:00 |
| Bain | Goulceby | 0.09 m (Low) | 0.02 | 0.35 | Falling | 20th May 2012 at 04:15 |
| Bain | Horncastle Victoria Mill | 0.22 m (Low/Medium) | 0.05 | 0.63 | Falling | 20th May 2012 at 04:15 |
| Bardsey Beck | Bardsey | 0.18 m (Low) | 0.12 | 1.38 | Falling | 20th May 2012 at 18:00 |
| Barlings Eau | Langworth | 0.30 m (Low) | 0.11 | 2.41 | Falling | 20th May 2012 at 06:00 |
| Beal | Station Road | 0.21 m (Low) | 0.14 | 1.22 | Falling | 20th May 2012 at 15:00 |
| Beam - Upstream | Hornchurch | 0.11 m (Low) | 0.08 | 2.60 | Falling | 20th May 2012 at 15:30 |
| Beane | Walkern | 0.10 m (Low) | 0.00 | 0.81 | Falling | 20th May 2012 at 09:00 |
| Beane | Dane End | 0.72 m (Low) | 0.69 | 1.75 | Rising | 20th May 2012 at 09:00 |
| Beane | Hertford, Hartham Park | 0.16 m (Low) | 0.13 | 0.57 | Falling | 20th May 2012 at 09:00 |
| Bear Brook | Aylesbury | 1.01 m (Low) | 0.97 | 1.33 | Rising | 20th May 2012 at 15:45 |
| Bedburn Beck | Bedburn | 0.33 m (Low) | 0.10 | 1.05 | Unchanged | 20th May 2012 at 18:15 |
| Beult | Smarden | 0.62 m (Low/Medium) | 0.28 | 1.55 | Rising | 20th May 2012 at 15:30 |
| Beult | Stilebridge | 0.25 m (Low) | 0.11 | 2.60 | Falling | 20th May 2012 at 15:30 |
| Beverley Brook | Worcester Park | 1.00 m (Low) | 0.95 | 1.75 | Rising | 20th May 2012 at 15:30 |
| Beverley Brook | Motspur Park | 1.06 m (Low) | 0.91 | 1.63 | Rising | 20th May 2012 at 15:30 |
| Beverley Brook | New Malden | 0.93 m (Low) | 0.78 | 2.00 | Rising | 20th May 2012 at 15:30 |
| Beverley Brook | Wimbledon Common | 0.20 m (Low) | 0.10 | 1.40 | Falling | 20th May 2012 at 15:30 |
| Beverley Brook | Barnes | 1.17 m (Low) | 0.90 | 2.14 | Rising | 20th May 2012 at 15:30 |
| Beverley Brook | Worcester Park | 1.00 m (Low) | 0.95 | 1.75 | Rising | 20th May 2012 at 15:30 |
| Beverley Brook | Motspur Park | 1.06 m (Low) | 0.91 | 1.63 | Rising | 20th May 2012 at 15:30 |
| Beverley Brook | New Malden | 0.93 m (Low) | 0.78 | 2.00 | Rising | 20th May 2012 at 15:30 |
| Beverley Brook | Wimbledon Common | 0.20 m (Low) | 0.10 | 1.40 | Falling | 20th May 2012 at 15:30 |
| Beverley Brook | Barnes | 1.17 m (Low) | 0.90 | 2.14 | Rising | 20th May 2012 at 15:30 |
| Bickerly Mill Stream | Ringwood Riverside Terrace | 0.56 m (Low/Medium) | 0.40 | 0.90 | Rising | 18th May 2012 at 04:00 |
| Birket | Davis Road | 0.50 m (Low) | 0.43 | 1.32 | Rising | 20th May 2012 at 15:00 |
| Birket | Fornalls Bridge | 0.05 m (Very Low) | 0.09 | 1.50 | Falling | 20th May 2012 at 15:00 |
| Bishop Monkton Beck | Bishop Monkton | 0.17 m (Low) | 0.14 | 0.40 | Falling | 20th May 2012 at 05:30 |
| Black Brook (Soar) | Shepshed | 0.66 m (Low/Medium) | 0.53 | 0.88 | Rising | 20th May 2012 at 18:00 |
| Blackwater | Tongham | 0.59 m (Low) | 0.56 | 1.45 | Rising | 20th May 2012 at 09:00 |
| Blackwater | Farnborough | 0.59 m (Low) | 0.36 | 1.30 | Rising | 20th May 2012 at 15:45 |
| Blackwater | Blackwater Bridge | 1.19 m (Low) | 1.05 | 1.70 | Rising | 20th May 2012 at 09:00 |
| Blackwater | Eversley | 0.78 m (Low/Medium) | 0.60 | 1.20 | Rising | 20th May 2012 at 09:00 |
| Blakewater | Harrison Street | 0.35 m (Low) | 0.09 | 1.50 | Unchanged | 20th May 2012 at 15:00 |
| Bloxham Brook | Bloxham | 0.65 m (Low) | 0.65 | 0.90 | Rising | 20th May 2012 at 09:00 |
| Bolingey Stream | Bolingey Cocks Bridge | 0.30 m (Medium) | 0.14 | 0.44 | Falling | 20th May 2012 at 06:15 |
| Bollin | Bollington Mill | 0.35 m (Low) | 0.27 | 0.71 | Rising | 20th May 2012 at 15:00 |
| Bollin | Dunham Massey | 0.71 m (Low/Medium) | 0.34 | 1.75 | Rising | 20th May 2012 at 15:00 |
| Bollin | Old Mill Lane | 0.15 m (Low) | 0.10 | 0.45 | Falling | 20th May 2012 at 15:00 |
| Bollin | Prestbury | 0.32 m (Low) | 0.26 | 1.26 | Falling | 20th May 2012 at 15:00 |
| Bollin | Wilmslow | 0.25 m (Low) | 0.15 | 1.30 | Falling | 20th May 2012 at 15:00 |
| Borehamwood Brook | Borehamwood | 0.84 m (Very Low) | 0.85 | 1.60 | Rising | 20th May 2012 at 09:00 |
| Bourn Brook | Comberton | 0.38 m (Low/Medium) | 0.07 | 0.73 | Rising | 20th May 2012 at 04:00 |
| Bourne Tributary Medway | Hadlow | 0.30 m (Low) | 0.17 | 1.00 | Falling | 20th May 2012 at 15:30 |
| Boverton Brook | Upper Boverton | 0.64 m (Medium) | 0.44 | 0.75 | Rising | 20th May 2012 at 16:45 |
| Bow Brook | Besford Bridge | 0.26 m (Low) | 0.17 | 1.90 | Falling | 20th May 2012 at 18:00 |
| Bradiford Water | Plaistow Mill | 0.27 m (Low/Medium) | 0.12 | 0.46 | Falling | 20th May 2012 at 04:00 |
| Bran | Llangadog | 0.45 m (Medium) | 0.02 | 0.81 | Rising | 20th May 2012 at 16:45 |
| Brant | Brant Broughton | 0.17 m (Medium) | 0.04 | 0.30 | Falling | 20th May 2012 at 06:00 |
| Brede | Winchelsea Strand Bridge | 1.46 m (Medium) | 0.19 | 2.50 | Rising | 20th May 2012 at 15:30 |
| Brede | Brede Sluice Gate | 1.07 m (Medium/High) | 0.25 | 1.26 | Rising | 20th May 2012 at 15:30 |
| Brent | Brentford | 0.00 m (Very High) | 0.00 | 0.00 | Falling | 20th May 2012 at 09:00 |
| Brent | Brent Cross | 0.10 m (Low) | 0.08 | 0.90 | Falling | 20th May 2012 at 09:00 |
| Brent | Brent, Monks park | 0.07 m (Low) | 0.05 | 1.55 | Falling | 20th May 2012 at 15:30 |
| Brent | Greenford,Costons Lane | 0.15 m (Low) | 0.13 | 0.80 | Falling | 20th May 2012 at 15:30 |
| Brent | Hanwell | 0.85 m (Low) | 0.84 | 3.19 | Rising | 20th May 2012 at 09:00 |
| Brent | Brentford | 0.00 m (Very High) | 0.00 | 0.00 | Falling | 20th May 2012 at 09:00 |
| Brent | Brent Cross | 0.10 m (Low) | 0.08 | 0.90 | Falling | 20th May 2012 at 09:00 |
| Brent | Brent, Monks park | 0.07 m (Low) | 0.05 | 1.55 | Falling | 20th May 2012 at 15:30 |
| Brent | Greenford,Costons Lane | 0.15 m (Low) | 0.13 | 0.80 | Falling | 20th May 2012 at 15:30 |
| Brent | Hanwell | 0.85 m (Low) | 0.84 | 3.19 | Rising | 20th May 2012 at 09:00 |
| Brislington Brook | Brislington | 0.07 m (Low/Medium) | 0.01 | 0.18 | Falling | 20th May 2012 at 04:00 |
| Bristol Frome | Chipping Sodbury | 0.59 m (Low) | 0.26 | 2.10 | Rising | 20th May 2012 at 04:15 |
| Bristol Frome | Tubbs Bottom | 0.32 m (Low/Medium) | 0.08 | 0.61 | Falling | 20th May 2012 at 04:00 |
| Bristol Frome | Frampton Cotterell | 0.12 m (Low/Medium) | 0.03 | 0.39 | Falling | 20th May 2012 at 09:00 |
| Bristol Frome | Frenchay | 0.54 m (Low) | 0.25 | 2.10 | Rising | 20th May 2012 at 04:00 |
| Broadfleet | Pilling, Broadfleet | 0.71 m (Low/Medium) | 0.22 | 2.00 | Rising | 20th May 2012 at 15:00 |
| Brock | A6 Bridge | 0.23 m (Low) | 0.10 | 1.00 | Falling | 20th May 2012 at 15:00 |
| Brock | Roe Bridge | 0.21 m (Low) | 0.12 | 0.93 | Falling | 20th May 2012 at 15:00 |
| Brompton Beck | Brompton | 0.19 m (Low) | 0.06 | 1.21 | Falling | 20th May 2012 at 18:15 |
| Brompton Beck | Snainton Ings | 0.12 m (Medium/High) | 0.04 | 0.14 | Falling | 20th May 2012 at 18:00 |
| Brough Clough | Brough Clough | 0.00 m (Very High) | 0.00 | 0.00 | Falling | 20th May 2012 at 18:00 |
| Broughton Beck | Broughton Hall | 0.19 m (Low) | 0.09 | 1.20 | Falling | 20th May 2012 at 18:00 |
| Broughton Brook | Broughton | 0.08 m (Low) | 0.02 | 0.29 | Falling | 20th May 2012 at 03:45 |
| Budleigh Brook | Budleigh Brook | 0.48 m (Low) | 0.46 | 0.65 | Rising | 20th May 2012 at 04:15 |
| Budleigh Brook | East Budleigh | 0.61 m (Medium) | 0.50 | 0.67 | Rising | 20th May 2012 at 06:00 |
| Bulbourne | Hemel Hempstead, Old Fishery Lane | 0.69 m (Low) | 0.64 | 1.80 | Rising | 20th May 2012 at 09:00 |
| Bulbourne | Hemel Hempstead, Two Waters Road | 0.24 m (Low) | 0.21 | 1.50 | Falling | 20th May 2012 at 09:00 |
| Bulstake Stream | New Botley | 1.31 m (Low/Medium) | 0.87 | 1.95 | Rising | 20th May 2012 at 09:00 |
| Bumpstead Brook | Broad Green | 0.06 m (Low) | 0.02 | 1.11 | Falling | 20th May 2012 at 04:15 |
| Burstow Stream | Peeks Brook Lane | 0.98 m (Low) | 0.75 | 2.40 | Rising | 20th May 2012 at 15:30 |
| Burstow Stream | Bonehurst Bridge | 1.91 m (Low/Medium) | 1.40 | 3.30 | Rising | 20th May 2012 at 15:30 |
| Burstwick Drain | Burstwick Hall Road Bridge | 0.91 m (Medium) | 0.18 | 1.27 | Rising | 20th May 2012 at 18:00 |
| Bury Brook | Kings Ripton | 0.13 m (Low) | 0.09 | 0.34 | Falling | 20th May 2012 at 05:15 |
| By Brook | West Kington | 0.12 m (Low) | 0.00 | 0.50 | Falling | 20th May 2012 at 04:15 |
| By Brook | Middlehill | 0.44 m (Medium) | 0.18 | 0.69 | Rising | 20th May 2012 at 04:00 |
| Calder | Calder Hall | 0.21 m (Low) | 0.16 | 2.50 | Falling | 20th May 2012 at 15:00 |
| Calder | Lomeshaye | 0.21 m (Low) | 0.17 | 1.80 | Falling | 20th May 2012 at 15:00 |
| Calder | Padiham Town Centre | 0.37 m (Low) | 0.28 | 1.50 | Rising | 20th May 2012 at 15:00 |
| Calder | Whalley Weir | 0.44 m (Low) | 0.33 | 2.20 | Rising | 20th May 2012 at 15:00 |
| Caldew | Cummersdale | 0.43 m (Low) | 0.28 | 2.20 | Rising | 20th May 2012 at 15:00 |
| Caldew | Denton Holme | 0.23 m (Low) | 0.01 | 2.70 | Falling | 20th May 2012 at 15:00 |
| Caldew | Sebergham | 0.52 m (Low) | 0.31 | 2.00 | Rising | 20th May 2012 at 15:00 |
| Candover Stream | Borough Bridge weir | 0.19 m (Low) | 0.13 | 0.50 | Falling | 20th May 2012 at 15:30 |
| Canons Brook | Harlow, Elizabeth way | 0.08 m (Low) | 0.05 | 1.40 | Falling | 20th May 2012 at 15:30 |
| Carden Brook | Carden Brook | 0.22 m (Low/Medium) | 0.06 | 0.54 | Falling | 20th May 2012 at 19:15 |
| Carden Brook | Carden Brook | 0.22 m (Low/Medium) | 0.06 | 0.54 | Falling | 20th May 2012 at 19:15 |
| Carnon River | Bissoe | 0.40 m (Medium) | 0.24 | 0.55 | Rising | 20th May 2012 at 04:00 |
| Ceiriog | Brynkinalt | 0.39 m (Low/Medium) | 0.17 | 0.73 | Rising | 20th May 2012 at 16:45 |
| Ceiriog | Brynkinalt | 0.39 m (Low/Medium) | 0.17 | 0.73 | Rising | 20th May 2012 at 16:45 |
| Cerist | Llawr Cae | 0.07 m (Low) | 0.05 | 0.28 | Falling | 20th May 2012 at 16:45 |
| Chad Brook | Long Melford | 0.16 m (Low) | 0.05 | 0.60 | Falling | 20th May 2012 at 04:15 |
| Chalgrove Brook - Upstream | Chalgrove | 3.10 m (Very Low) | 3.11 | 3.54 | Rising | 22nd March 2012 at 09:00 |
| Chater | Fosters Bridge | 0.20 m (Low) | 0.04 | 1.01 | Falling | 20th May 2012 at 06:30 |
| Chelt | Charlton Kings | 0.00 m (Very Low) | 0.28 | 0.45 | Falling | 30th November -0001 at 00:00 |
| Chelt | College Road | 0.00 m (Very High) | 0.00 | 0.00 | Falling | 30th November -0001 at 00:00 |
| Chelt | Arle | 0.00 m (Very Low) | 0.34 | 0.66 | Falling | 30th November -0001 at 00:00 |
| Chelt | Cox's Meadow | 0.00 m (Low) | 0.00 | 1.30 | Falling | 30th November -0001 at 00:00 |
| Chelt | Cox's Flume | 0.00 m (Very Low) | 0.24 | 0.65 | Falling | 30th November -0001 at 00:00 |
| Cheriton Stream | Sewards Bridge | 0.22 m (Low) | 0.13 | 0.60 | Falling | 20th May 2012 at 15:30 |
| Chertsey Bourne | Trumps Green | 0.90 m (Low) | 0.71 | 1.50 | Rising | 20th May 2012 at 15:45 |
| Chertsey Bourne | Guildford Street | 0.51 m (Low) | 0.30 | 1.30 | Rising | 20th May 2012 at 15:45 |
| Chertsey Bourne | Free Prae Road | 0.84 m (Low) | 0.72 | 1.97 | Rising | 20th May 2012 at 09:00 |
| Cherwell | Woodford Halse | 0.93 m (Low) | 0.85 | 1.40 | Rising | 20th May 2012 at 09:00 |
| Cherwell | Cropredy Bridge | 1.08 m (Low) | 1.04 | 1.55 | Rising | 20th May 2012 at 09:00 |
| Cherwell | Banbury | 0.24 m (Low/Medium) | 0.02 | 0.49 | Falling | 20th May 2012 at 15:45 |
| Cherwell | Heyford Bridge | 0.62 m (Low/Medium) | 0.36 | 1.27 | Rising | 20th May 2012 at 09:00 |
| Cherwell | Thrupp | 0.91 m (Low) | 0.65 | 1.94 | Rising | 20th May 2012 at 09:00 |
| Cherwell | Enslow Weir A | 0.43 m (Low/Medium) | 0.14 | 0.81 | Rising | 20th May 2012 at 15:45 |
| Cherwell - Upstream | Kings Mill | 1.94 m (Medium) | 1.63 | 2.07 | Rising | 20th May 2012 at 09:00 |
| Chess | Chesham | 0.26 m (Very Low) | 0.33 | 0.74 | Falling | 20th May 2012 at 09:00 |
| Chess - Upstream | Rickmansworth | 0.07 m (Low) | 0.06 | 0.30 | Falling | 20th May 2012 at 09:00 |
| Chew River | Compton Dando | 0.79 m (Low) | 0.40 | 2.50 | Rising | 20th May 2012 at 04:00 |
| Chew Stoke Brook | Chew Stoke | 0.65 m (Medium/High) | 0.30 | 0.70 | Rising | 20th May 2012 at 04:00 |
| Ching Brook | Chingford | 0.18 m (Low) | 0.15 | 0.75 | Falling | 20th May 2012 at 09:00 |
| Ching Brook | Walthamstow | 1.09 m (Low) | 0.93 | 2.10 | Rising | 20th May 2012 at 09:00 |
| Ching Brook | Chingford | 0.18 m (Low) | 0.15 | 0.75 | Falling | 20th May 2012 at 09:00 |
| Ching Brook | Walthamstow | 1.09 m (Low) | 0.93 | 2.10 | Rising | 20th May 2012 at 09:00 |
| Chitterne Brook | Codford | 0.11 m (Low) | 0.02 | 0.47 | Falling | 20th May 2012 at 04:00 |
| Christchurch Coast | Christchurch | 0.00 m (Very High) | 0.00 | 0.00 | Falling | 20th May 2012 at 04:00 |
| Churn | South Cerney | 0.84 m (Medium) | 0.42 | 1.00 | Rising | 20th May 2012 at 09:00 |
| Churn | Cerney Wick | 0.50 m (Medium/High) | 0.02 | 0.56 | Rising | 20th May 2012 at 09:00 |
| Churn - Upstream | Cirencester | 0.43 m (Medium/High) | 0.09 | 0.51 | Rising | 20th May 2012 at 15:45 |
| Clanfield Brook | Clanfield | 0.64 m (Low) | 0.61 | 0.81 | Rising | 20th May 2012 at 09:00 |
| Clarach | Llangorwen | 0.37 m (Low/Medium) | 0.16 | 0.72 | Rising | 20th May 2012 at 16:45 |
| Clipstone Brook | Leighton Buzzard | 0.13 m (Low/Medium) | 0.06 | 0.28 | Falling | 20th May 2012 at 21:45 |
| Clwyd | Pont y Cambwll | 0.62 m (Low) | 0.40 | 1.38 | Rising | 20th May 2012 at 16:45 |
| Clwyd | Ruthin Weir | 0.43 m (Medium) | 0.11 | 0.59 | Rising | 20th May 2012 at 16:45 |
| Clwyd | Rhuddlan | 2.41 m (Low) | 2.26 | 3.80 | Rising | 20th May 2012 at 16:45 |
| Clwyd | Pont Dafydd | 0.97 m (Low) | 0.58 | 2.40 | Rising | 20th May 2012 at 16:45 |
| Clydach Brook | Ynys Fach Bridge | 0.19 m (Low/Medium) | 0.09 | 0.41 | Falling | 20th May 2012 at 16:45 |
| Clyne | Blackpill | 0.78 m (Low) | 0.77 | 1.05 | Rising | 20th May 2012 at 16:45 |
| Coal Burn | Coalburn Beck | 0.15 m (Low) | 0.03 | 0.90 | Falling | 20th May 2012 at 15:00 |
| Cobbins Brook | Waltham Abbey | 0.07 m (Low) | 0.03 | 2.20 | Falling | 20th May 2012 at 15:45 |
| Cobbins Brook | Waltham Abbey, Sewardstone Road | 0.13 m (Low) | 0.07 | 1.00 | Falling | 20th May 2012 at 15:30 |
| Cobbins Brook | Waltham Abbey | 0.07 m (Low) | 0.03 | 2.20 | Falling | 20th May 2012 at 15:45 |
| Cobbins Brook | Waltham Abbey, Sewardstone Road | 0.13 m (Low) | 0.07 | 1.00 | Falling | 20th May 2012 at 15:30 |
| Cober | Helston County Bridge | 0.41 m (Low/Medium) | 0.00 | 0.83 | Rising | 20th May 2012 at 04:15 |
| Cocker | Scalehill Upper Lorton Valley | 0.57 m (Low/Medium) | 0.31 | 1.00 | Rising | 20th May 2012 at 15:00 |
| Cocker | South Street Footbridge | 0.92 m (Low) | 0.91 | 1.50 | Rising | 20th May 2012 at 15:00 |
| Cocker | Southwaite Bridge | 0.46 m (Low) | 0.35 | 1.25 | Rising | 20th May 2012 at 15:00 |
| Cockers Dyke | Preesall Pumping Station, Cockers Dyke | 0.86 m (Medium) | 0.41 | 1.10 | Rising | 20th May 2012 at 15:00 |
| Cod Beck | Dalton | 0.97 m (Low/Medium) | 0.57 | 1.78 | Rising | 20th May 2012 at 18:15 |
| Cole | Lower Stratton | 1.97 m (Low) | 1.94 | 2.50 | Rising | 20th May 2012 at 09:00 |
| Cole | Westmill Bridge | 0.46 m (Low) | 0.37 | 0.82 | Rising | 20th May 2012 at 09:00 |
| Cole | Inglesham | 0.18 m (Low) | 0.10 | 0.80 | Falling | 20th May 2012 at 15:45 |
| Colliters Brook | Colliters Brook | 0.07 m (Low) | 0.00 | 0.49 | Falling | 20th May 2012 at 04:00 |
| Coln | Fosse Bridge | 0.15 m (Medium) | 0.02 | 0.23 | Falling | 20th May 2012 at 09:00 |
| Coln | Bibury | 0.25 m (Medium) | 0.08 | 0.33 | Falling | 20th May 2012 at 15:45 |
| Colne | London Colney | 1.05 m (Low/Medium) | 0.94 | 1.36 | Rising | 20th May 2012 at 09:00 |
| Colne | Watford | 0.20 m (Low) | 0.12 | 0.60 | Falling | 20th May 2012 at 15:30 |
| Colne | Batchworth | 2.44 m (Low) | 2.40 | 2.60 | Rising | 20th May 2012 at 09:00 |
| Colne | Denham Colne | 0.15 m (Low) | 0.11 | 0.40 | Falling | 20th May 2012 at 15:30 |
| Colne | Iver, Clisbys Bridge | 0.30 m (Low) | 0.27 | 0.70 | Falling | 20th May 2012 at 09:00 |
| Colne | West Drayton | 0.42 m (Low) | 0.39 | 0.90 | Rising | 20th May 2012 at 09:00 |
| Colne | Stanwell Mill | 0.55 m (Low/Medium) | 0.26 | 1.00 | Rising | 20th May 2012 at 09:00 |
| Colne - Upstream | Willowbank | 0.96 m (Low) | 0.93 | 1.10 | Rising | 20th May 2012 at 09:00 |
| Colne Brook | Iver Bridge | 0.01 m (Low) | 0.00 | 1.50 | Falling | 20th May 2012 at 09:00 |
| Colne Brook | Hythe End | 0.67 m (Low) | 0.43 | 2.14 | Rising | 20th May 2012 at 09:00 |
| Colne Brook | Hythe Weir | 0.82 m (Medium) | 0.60 | 1.00 | Rising | 20th May 2012 at 09:00 |
| Colwyn | Hafod Wydr | 0.07 m (Low) | 0.04 | 0.37 | Falling | 20th May 2012 at 16:45 |
| Conder | Galgate | 0.20 m (Low) | 0.11 | 1.50 | Falling | 20th May 2012 at 15:00 |
| Coney Gut | Portmarsh Lane | 0.16 m (Low/Medium) | 0.06 | 0.31 | Falling | 20th May 2012 at 06:00 |
| Coney Gut | Coney Gut | 1.52 m (Low) | 1.46 | 1.75 | Rising | 20th May 2012 at 06:00 |
| Congresbury Yeo | Iwood | 0.18 m (Low) | 0.08 | 0.94 | Falling | 20th May 2012 at 12:15 |
| Conwy | Trefriw | 1.42 m (Low) | 1.05 | 4.00 | Rising | 20th May 2012 at 16:45 |
| Conwy | Pont Fawr | 1.01 m (Low/Medium) | 0.72 | 1.55 | Rising | 20th May 2012 at 16:45 |
| Conwy | Cwmlanerch | 0.87 m (Low/Medium) | 0.55 | 1.71 | Rising | 20th May 2012 at 16:45 |
| Cothi | Felin Mynachdy | 0.74 m (Low) | 0.57 | 1.44 | Rising | 20th May 2012 at 16:45 |
| Counter Drain | Welches Dam | 0.97 m (Medium) | 0.69 | 1.14 | Rising | 20th May 2012 at 17:15 |
| Cove Brook | Hawley Road | 1.13 m (Low) | 1.12 | 2.30 | Rising | 20th May 2012 at 09:00 |
| Cove Brook | Mayfield Road | 0.94 m (Low) | 0.80 | 1.60 | Rising | 20th May 2012 at 09:00 |
| Crake | Low Nibthwaite | 0.39 m (Low/Medium) | 0.18 | 0.95 | Rising | 20th May 2012 at 15:00 |
| Crane | Marsh Farm | 0.06 m (Low) | 0.02 | 1.00 | Falling | 20th May 2012 at 20:30 |
| Crane | Cranford Park | 0.06 m (Low) | 0.06 | 0.72 | Falling | 20th May 2012 at 09:00 |
| Crane | Marsh Farm | 0.06 m (Low) | 0.02 | 1.00 | Falling | 20th May 2012 at 20:30 |
| Cranleigh Waters | Flash Bridge | 1.02 m (Low) | 0.96 | 2.60 | Rising | 20th May 2012 at 15:45 |
| Cranleigh Waters | Bramley | 2.23 m (Low) | 2.11 | 3.00 | Rising | 20th May 2012 at 15:45 |
| Cray | Crayford | 0.08 m (Low) | 0.08 | 0.85 | Falling | 20th May 2012 at 15:30 |
| Cripsey Brook | Moreton | 0.22 m (Low) | 0.04 | 1.50 | Falling | 20th May 2012 at 09:00 |
| Cripsey Brook - Upstream | Chipping Ongar | 0.18 m (Low) | 0.08 | 1.00 | Falling | 20th May 2012 at 15:30 |
| Croal | Farnworth | 0.09 m (Low) | 0.07 | 0.70 | Falling | 20th May 2012 at 15:00 |
| Cuckmere & Pevensey Levels | Eastbourne | 0.00 m (Very High) | 0.00 | 0.00 | Falling | 20th May 2012 at 15:30 |
| Cundall Beck | Bat Bridge | 0.15 m (Low/Medium) | 0.09 | 0.26 | Falling | 20th May 2012 at 18:15 |
| Cynin | St Clears | 0.48 m (Low/Medium) | 0.22 | 0.87 | Rising | 20th May 2012 at 16:45 |
| Cynon | Hirwaun | 0.15 m (Very Low) | 0.26 | 0.53 | Falling | 20th May 2012 at 16:45 |
| Dacre Beck | Dacre Bridge | 0.29 m (Very Low) | 0.30 | 1.20 | Falling | 20th May 2012 at 15:00 |
| Dane | Congleton Park | 0.13 m (Low) | 0.07 | 0.60 | Falling | 20th May 2012 at 15:00 |
| Dane | Hug Bridge | 0.28 m (Low/Medium) | 0.17 | 0.47 | Falling | 20th May 2012 at 15:00 |
| Dane | Rudheath | 0.47 m (Low) | 0.24 | 2.40 | Rising | 20th May 2012 at 15:00 |
| Daniels Brook | Bodiam Avenue | 0.00 m (Very High) | 0.00 | 0.00 | Falling | 30th November -0001 at 00:00 |
| Darent | Hall Place | 0.12 m (Low) | 0.03 | 0.75 | Falling | 20th May 2012 at 15:30 |
| Darent | Hawley | 0.19 m (Low/Medium) | 0.02 | 0.41 | Falling | 20th May 2012 at 15:30 |
| Darent | Otford | 0.21 m (Low) | 0.07 | 0.70 | Falling | 20th May 2012 at 15:30 |
| Darwen | Blue Bridge | 0.33 m (Low) | 0.27 | 1.55 | Falling | 20th May 2012 at 15:00 |
| Darwen | Ewood | 0.35 m (Low) | 0.30 | 1.10 | Unchanged | 20th May 2012 at 15:00 |
| Darwen | Hardman Way | 0.04 m (Low) | 0.03 | 0.65 | Falling | 20th May 2012 at 15:00 |
| Dauntsey Brook | Dauntsey | 0.50 m (Low/Medium) | 0.09 | 1.40 | Rising | 20th May 2012 at 04:15 |
| De Lank River | De Lank | 0.16 m (Low) | 0.11 | 0.34 | Falling | 20th May 2012 at 09:00 |
| Dean | Stanneylands | 0.22 m (Low/Medium) | 0.08 | 0.51 | Falling | 20th May 2012 at 15:00 |
| Deans Brook | Edgware, Deans Brook | 0.89 m (Low) | 0.81 | 1.70 | Rising | 20th May 2012 at 09:00 |
| Deans Brook | Edgware, Deans Brook | 0.89 m (Low) | 0.81 | 1.70 | Rising | 20th May 2012 at 09:00 |
| Dee | Dee Bridge | 1.44 m (Medium) | 0.75 | 1.89 | Rising | 20th May 2012 at 21:00 |
| Dee | Bala | 0.23 m (Low) | 0.20 | 1.02 | Falling | 20th May 2012 at 21:00 |
| Dee | Manley Hall | 0.61 m (Low) | 0.41 | 1.33 | Rising | 20th May 2012 at 16:45 |
| Dee | New Inn | 0.54 m (Low/Medium) | 0.28 | 1.12 | Rising | 20th May 2012 at 16:45 |
| Dee | Glanllyn | 0.00 m (Very Low) | 0.71 | 1.89 | Falling | 30th November -0001 at 00:00 |
| Dee | Farndon | 4.97 m (Low) | 4.57 | 8.05 | Rising | 20th May 2012 at 16:45 |
| Dee | Corwen | 0.55 m (Low) | 0.49 | 1.10 | Rising | 20th May 2012 at 16:45 |
| Dee | Ironbridge | 4.54 m (Low) | 4.39 | 6.00 | Rising | 20th May 2012 at 16:45 |
| Dee | Bala | 0.23 m (Low) | 0.20 | 1.02 | Falling | 20th May 2012 at 21:00 |
| Dee | Corwen | 0.55 m (Low) | 0.49 | 1.10 | Rising | 20th May 2012 at 16:45 |
| Dee | Dee Bridge | 1.44 m (Medium) | 0.75 | 1.89 | Rising | 20th May 2012 at 21:00 |
| Dee | Farndon | 4.97 m (Low) | 4.57 | 8.05 | Rising | 20th May 2012 at 16:45 |
| Dee | Glanllyn | 0.00 m (Very Low) | 0.71 | 1.89 | Falling | 30th November -0001 at 00:00 |
| Dee | Ironbridge | 4.54 m (Low) | 4.39 | 6.00 | Rising | 20th May 2012 at 16:45 |
| Dee | Manley Hall | 0.61 m (Low) | 0.41 | 1.33 | Rising | 20th May 2012 at 16:45 |
| Dee | New Inn | 0.54 m (Low/Medium) | 0.28 | 1.12 | Rising | 20th May 2012 at 16:45 |
| Dee | Summers Jetty | 0.00 m (Very High) | 0.00 | 0.00 | Falling | 20th May 2012 at 16:45 |
| Derwent | Ouse Bridge | 0.84 m (Low) | 0.44 | 2.21 | Rising | 20th May 2012 at 15:00 |
| Derwent | Workington Dock | 1.00 m (Very High) | 0.00 | 0.00 | Rising | 20th May 2012 at 15:00 |
| Derwent | Lodore | 0.82 m (Low/Medium) | 0.51 | 1.70 | Rising | 20th May 2012 at 15:00 |
| Derwent | Kingfisher | 0.00 m (Very High) | 0.00 | 0.00 | Falling | 30th November -0001 at 00:00 |
| Dewi Fawr | Glasfryn Ford | 0.64 m (Very High) | 0.00 | 0.00 | Rising | 20th May 2012 at 16:45 |
| Docken's Water | Moyles Court | 0.13 m (Low) | 0.09 | 0.30 | Falling | 20th May 2012 at 04:00 |
| Doethie | Craig Clugwyn | 0.00 m (Very Low) | 0.27 | 0.92 | Falling | 20th May 2012 at 16:45 |
| Dollis Brook | Whetstone | 0.26 m (Low) | 0.26 | 1.60 | Falling | 20th May 2012 at 09:00 |
| Dollis Brook | North Finchley | 0.24 m (Low) | 0.19 | 1.70 | Falling | 20th May 2012 at 09:00 |
| Dollis Brook | Hendon Lane | 0.07 m (Low) | 0.05 | 0.85 | Falling | 20th May 2012 at 09:00 |
| Dollis Brook | Whetstone | 0.26 m (Low) | 0.26 | 1.60 | Falling | 20th May 2012 at 09:00 |
| Dollis Brook | North Finchley | 0.24 m (Low) | 0.19 | 1.70 | Falling | 20th May 2012 at 09:00 |
| Dollis Brook | Hendon Lane | 0.07 m (Low) | 0.05 | 0.85 | Falling | 20th May 2012 at 09:00 |
| Doniford Stream | Sampford Brett | 0.26 m (Low) | 0.10 | 0.80 | Falling | 20th May 2012 at 04:00 |
| Doniford Stream | Swill Bridge | 0.38 m (Low/Medium) | 0.18 | 0.80 | Rising | 20th May 2012 at 06:15 |
| Dorcan Brook | Kestrel Drive | 0.91 m (Low) | 0.78 | 2.20 | Rising | 20th May 2012 at 09:00 |
| Dore | Peterchurch | 0.41 m (Low/Medium) | 0.19 | 0.67 | Rising | 20th May 2012 at 18:00 |
| Dore | Peterchurch | 0.41 m (Low/Medium) | 0.19 | 0.67 | Rising | 20th May 2012 at 18:00 |
| Dorset Coast | Poole Harbour | 0.00 m (Very High) | 0.00 | 0.00 | Falling | 20th May 2012 at 04:15 |
| Dorset Coast | Portland | 0.00 m (Very High) | 0.00 | 0.00 | Falling | 20th May 2012 at 07:00 |
| Dorset Coast | West Bay | 0.00 m (Very High) | 0.00 | 0.00 | Falling | 20th May 2012 at 06:00 |
| Dorset Coast | Chiswell | 0.00 m (Very High) | 0.00 | 0.00 | Falling | 20th May 2012 at 04:00 |
| Douglas | Appley Bridge | 0.48 m (Low) | 0.37 | 2.50 | Rising | 20th May 2012 at 15:00 |
| Douglas | Parbold | 0.14 m (Low) | 0.10 | 1.70 | Falling | 20th May 2012 at 15:00 |
| Douglas | Red Rock | 0.18 m (Low) | 0.11 | 1.10 | Falling | 20th May 2012 at 15:00 |
| Douglas | Wanes Blades | 0.45 m (Low) | 0.29 | 2.50 | Rising | 20th May 2012 at 15:00 |
| Douglas | Wigan | 0.16 m (Low) | 0.09 | 1.10 | Falling | 20th May 2012 at 15:00 |
| Dowles Brook | Oak Cottage | 0.20 m (Low/Medium) | 0.08 | 0.35 | Falling | 20th May 2012 at 18:00 |
| Duddon | Duddon Hall | 0.25 m (Low) | 0.11 | 1.45 | Falling | 20th May 2012 at 15:00 |
| Duddon | Ulpha | 0.40 m (Low) | 0.24 | 1.50 | Rising | 20th May 2012 at 15:00 |
| Dudwell Tributary Rother | Browns Bridge | 0.06 m (Low) | 0.06 | 1.40 | Falling | 20th May 2012 at 15:30 |
| Dulais | Cilfrew | 0.33 m (Low/Medium) | 0.19 | 0.65 | Falling | 20th May 2012 at 16:45 |
| Dulais | Pontardulais | 0.23 m (Low) | 0.17 | 0.46 | Falling | 20th May 2012 at 16:45 |
| Dulais | Llanwrda | 0.39 m (Medium) | 0.13 | 0.61 | Rising | 20th May 2012 at 16:45 |
| Dun | Hungerford Dun | 0.10 m (Low/Medium) | 0.05 | 0.17 | Falling | 20th May 2012 at 09:00 |
| Dwyfor | Garndolbenmaen | 0.18 m (Low) | 0.09 | 0.57 | Falling | 20th May 2012 at 16:45 |
| Dyfi | Dyfi Bridge | 1.24 m (Low/Medium) | 0.81 | 2.08 | Rising | 20th May 2012 at 16:45 |
| Dysynni | Pont y Garth | 0.41 m (Low) | 0.25 | 1.23 | Rising | 20th May 2012 at 16:45 |
| Ea Beck | Norwood | 0.33 m (Low) | 0.19 | 3.20 | Rising | 20th May 2012 at 18:00 |
| Eamont | Eamont Bridge Farm | 0.52 m (Low) | 0.35 | 1.70 | Rising | 20th May 2012 at 15:00 |
| Eamont | Udford | 0.39 m (Low) | 0.15 | 2.00 | Rising | 20th May 2012 at 15:00 |
| Earby Beck | Earby New Cut | 0.19 m (Low/Medium) | 0.11 | 0.40 | Falling | 20th May 2012 at 18:00 |
| East Clandon Stream | Send | 0.80 m (Very Low) | 0.81 | 2.20 | Rising | 20th May 2012 at 09:00 |
| East Dart River | Bellever | 0.57 m (Low/Medium) | 0.45 | 0.87 | Rising | 20th May 2012 at 09:00 |
| East Glen (To Kates Bridge) | Irnham | 0.08 m (Low) | 0.03 | 1.08 | Falling | 20th May 2012 at 03:45 |
| East Glen (To Kates Bridge) | Manthorpe | 0.47 m (Low/Medium) | 0.31 | 0.89 | Rising | 20th May 2012 at 03:45 |
| East Hampshire Coast | Portsmouth | 0.00 m (Very High) | 0.00 | 0.00 | Falling | 20th May 2012 at 04:30 |
| East Lyn River | Brendon | 1.36 m (Low/Medium) | 1.20 | 1.67 | Rising | 20th May 2012 at 09:00 |
| East Okement River | Fatherford | 0.14 m (Low) | 0.09 | 0.40 | Falling | 20th May 2012 at 04:00 |
| East Okement River | East Okement Farm | 0.30 m (Low/Medium) | 0.22 | 0.50 | Falling | 20th May 2012 at 04:00 |
| East Stour Trib Great Stour | Aldington Upstream | 0.00 m (Very Low) | 0.01 | 1.73 | Falling | 30th November -0001 at 00:00 |
| Eastburn Beck | Cross Hills | 0.22 m (Low) | 0.12 | 1.00 | Falling | 20th May 2012 at 18:00 |
| Eastern Cleddau | Canaston Bridge | 0.78 m (Low/Medium) | 0.63 | 1.19 | Rising | 20th May 2012 at 21:15 |
| Eastern Yar | Bembridge | 0.00 m (Very High) | 0.00 | 0.00 | Falling | 20th May 2012 at 15:45 |
| Ebbw | Risca | 1.03 m (Low/Medium) | 0.93 | 1.18 | Rising | 20th May 2012 at 16:45 |
| Ebbw | Rhiwderin | 0.48 m (Low/Medium) | 0.28 | 0.92 | Rising | 20th May 2012 at 16:45 |
| Eden | Appleby | 0.35 m (Low) | 0.25 | 1.80 | Rising | 20th May 2012 at 15:00 |
| Eden | Great Corby | 0.75 m (Low) | 0.41 | 3.36 | Rising | 20th May 2012 at 15:00 |
| Eden | Great Musgrave Bridge | 0.29 m (Low) | 0.14 | 1.39 | Falling | 20th May 2012 at 15:00 |
| Eden | Linstock | 0.43 m (Low) | 0.11 | 2.40 | Rising | 20th May 2012 at 15:00 |
| Eden | Sheepmount | 1.03 m (Low) | 0.63 | 3.45 | Rising | 20th May 2012 at 15:00 |
| Eden | Temple Sowerby | 0.49 m (Low) | 0.20 | 3.30 | Rising | 20th May 2012 at 15:00 |
| Eden | Kirkby Stephen | 0.26 m (Low/Medium) | 0.07 | 0.70 | Falling | 20th May 2012 at 15:00 |
| Eden Tributary Medway | Edenbridge | 0.70 m (Low) | 0.25 | 2.75 | Rising | 20th May 2012 at 15:30 |
| Eden Tributary Medway | Lingfield Eden Brook | 0.00 m (Very Low) | 0.07 | 1.00 | Falling | 30th November -0001 at 00:00 |
| Eden Tributary Medway | Penshurst | 0.32 m (Low) | 0.09 | 1.75 | Falling | 20th May 2012 at 15:30 |
| Eden Tributary Medway | Vexour Bridge | 0.91 m (Low) | 0.60 | 2.50 | Rising | 20th May 2012 at 15:30 |
| Edgware Brook | Stanmore, Wolverton Road | 0.12 m (Low) | 0.05 | 0.60 | Falling | 20th May 2012 at 15:30 |
| Edgware Brook | Stanmore, Wolverton Road | 0.12 m (Low) | 0.05 | 0.60 | Falling | 20th May 2012 at 15:30 |
| Ehen | Bleach Green Weir | 0.29 m (Low) | 0.17 | 2.04 | Falling | 20th May 2012 at 15:00 |
| Ehen | Braystones | 0.41 m (Low) | 0.34 | 1.70 | Rising | 20th May 2012 at 15:00 |
| Ehen | Egremont | 0.47 m (Low) | 0.36 | 1.50 | Rising | 20th May 2012 at 15:00 |
| Elan | Caban Elan | 0.25 m (Low) | 0.23 | 0.85 | Falling | 20th May 2012 at 16:45 |
| Ellen | Bull Gill | 0.37 m (Low) | 0.24 | 1.50 | Rising | 20th May 2012 at 15:00 |
| Eller Beck | Skipton Morrisons | 0.07 m (Low) | 0.01 | 1.10 | Falling | 20th May 2012 at 18:00 |
| Elwy | Pont y Gwyddel | 0.56 m (Low/Medium) | 0.41 | 0.97 | Rising | 20th May 2012 at 16:45 |
| Elwy | St Asaph | 1.17 m (Low) | 0.90 | 2.02 | Rising | 20th May 2012 at 16:45 |
| Ely | St Fagans | 0.39 m (Low) | 0.21 | 1.07 | Rising | 20th May 2012 at 16:45 |
| Ely | Lanelay | 0.28 m (Low/Medium) | 0.14 | 0.60 | Falling | 20th May 2012 at 16:45 |
| Emm Brook | Wokingham | 0.50 m (Low) | 0.40 | 1.00 | Rising | 20th May 2012 at 09:00 |
| Emral Brook | Emral Brook | 0.56 m (Low) | 0.50 | 1.22 | Rising | 20th May 2012 at 16:45 |
| Emral Brook | Emral Brook | 0.56 m (Low) | 0.50 | 1.22 | Rising | 20th May 2012 at 16:45 |
| Ems | Westbourne | 0.33 m (Low/Medium) | 0.06 | 0.80 | Falling | 20th May 2012 at 15:30 |
| Enborne | Brimpton | 0.29 m (Low/Medium) | 0.08 | 0.61 | Falling | 20th May 2012 at 09:00 |
| Erch | Pencaenewydd | 0.09 m (Low) | 0.05 | 0.27 | Falling | 20th May 2012 at 16:45 |
| Eridge Stream Tributary Medway | Hendal Bridge | 0.25 m (Low) | 0.13 | 1.25 | Falling | 20th May 2012 at 15:30 |
| Esk (Cumbria) | Cropple Howe | 0.46 m (Low) | 0.37 | 1.88 | Rising | 20th May 2012 at 15:00 |
| Essex Coast | Colne Barrier | 0.00 m (Very High) | 0.00 | 0.00 | Falling | 20th May 2012 at 04:15 |
| Essex Coast | Clacton Pier | 0.00 m (Very High) | 0.00 | 0.00 | Falling | 20th May 2012 at 04:15 |
| Etherow | Compstall | 0.17 m (Low) | 0.08 | 0.75 | Falling | 20th May 2012 at 15:00 |
| Etherow | Woolley Bridge | 0.38 m (Low/Medium) | 0.12 | 0.80 | Rising | 20th May 2012 at 15:00 |
| Evenlode | Moreton | 0.15 m (Low) | 0.10 | 1.00 | Falling | 20th May 2012 at 09:00 |
| Evenlode | Evenlode Bridge | 0.61 m (Low/Medium) | 0.41 | 1.17 | Rising | 20th May 2012 at 09:00 |
| Evenlode | Shipton | 0.78 m (Low) | 0.56 | 1.45 | Rising | 20th May 2012 at 09:00 |
| Evenlode | Cassington Weir B | 0.36 m (Low/Medium) | 0.14 | 0.77 | Rising | 20th May 2012 at 15:45 |
| Evenlode | Cassington Weir A | 0.66 m (Medium/High) | 0.09 | 0.69 | Rising | 20th May 2012 at 15:45 |
| Ewelme Brook | Ewelme | 0.06 m (Low) | 0.04 | 0.14 | Falling | 20th May 2012 at 09:00 |
| Ewenny | Keepers Lodge | 0.32 m (Low/Medium) | 0.21 | 0.54 | Falling | 20th May 2012 at 16:45 |
| Ewenny Fach | Old Mill | 0.18 m (Low) | 0.13 | 0.37 | Falling | 20th May 2012 at 16:45 |
| Ewenny Fawr | Felindre Road | 0.51 m (Low) | 0.45 | 0.76 | Rising | 20th May 2012 at 16:45 |
| Exe Estuary | Lympstone | 0.00 m (Very High) | 0.00 | 0.00 | Falling | 20th May 2012 at 04:15 |
| Exminster Marshes | Limekilns | 0.41 m (Low) | 0.30 | 0.88 | Rising | 20th May 2012 at 04:15 |
| Field Drain | Hayes Basin | 0.97 m (Very Low) | 1.91 | 1.97 | Rising | 20th May 2012 at 18:00 |
| Flood Channel | Maesbrook | 0.32 m (Medium) | 0.11 | 0.52 | Falling | 20th May 2012 at 18:00 |
| Fords Lake | Stepaside | 0.26 m (Low) | 0.20 | 0.48 | Falling | 20th May 2012 at 16:45 |
| Fosdyke Canal | Fosdyke Golf Course | 0.20 m (Low) | 0.15 | 0.79 | Falling | 20th May 2012 at 05:30 |
| Fossdyke Canal | Fosdyke Jetty | 1.33 m (Low) | 1.27 | 1.90 | Rising | 20th May 2012 at 04:15 |
| Foston Beck | Allington | 0.14 m (Low) | 0.04 | 0.85 | Falling | 20th May 2012 at 03:45 |
| Foudry Brook | Beech Hill | 0.79 m (Low/Medium) | 0.62 | 1.18 | Rising | 20th May 2012 at 09:00 |
| Frays | Uxbridge, Fountains Mill | 0.69 m (Low) | 0.57 | 1.40 | Rising | 20th May 2012 at 09:00 |
| Frays | Yiewsley | 0.78 m (Low) | 0.73 | 1.20 | Rising | 20th May 2012 at 09:00 |
| Frogwy | Bodffordd | 0.23 m (Low/Medium) | 0.07 | 0.62 | Falling | 20th May 2012 at 16:45 |
| Frome | Yarkhill | 0.38 m (Low/Medium) | 0.19 | 0.80 | Rising | 20th May 2012 at 18:00 |
| Frome | Bishops Frome | 0.25 m (Low/Medium) | 0.12 | 0.48 | Falling | 20th May 2012 at 18:00 |
| Frome | Bishops Frome | 0.25 m (Low/Medium) | 0.12 | 0.48 | Falling | 20th May 2012 at 18:00 |
| Frome | Yarkhill | 0.38 m (Low/Medium) | 0.19 | 0.80 | Rising | 20th May 2012 at 18:00 |
| Frome | Bromyard | 0.16 m (Low/Medium) | 0.05 | 0.35 | Falling | 20th May 2012 at 18:00 |
| Frome (MI) | Chalford | 0.00 m (Very Low) | 0.03 | 0.31 | Falling | 30th November -0001 at 00:00 |
| Frome (MI) | Brimscombe | 0.00 m (Very High) | 0.00 | 0.00 | Falling | 30th November -0001 at 00:00 |
| Frome (MI) | Eastington | 0.00 m (Very Low) | 0.29 | 0.86 | Falling | 30th November -0001 at 00:00 |
| Gade | Hemel Hempstead, Bury Mill, | 0.12 m (Low) | 0.07 | 0.53 | Falling | 20th May 2012 at 14:15 |
| Gade | Croxley Green | 0.10 m (Low) | 0.07 | 1.10 | Falling | 20th May 2012 at 09:00 |
| Gatwick Stream | Maidenbower | 0.80 m (Low) | 0.61 | 2.00 | Rising | 20th May 2012 at 15:30 |
| Gatwick Stream | Three Bridges | 0.00 m (Very Low) | 0.20 | 2.60 | Falling | 30th November -0001 at 00:00 |
| Gauze Brook | Rodbourne | 0.16 m (Low/Medium) | 0.03 | 0.39 | Falling | 20th May 2012 at 04:00 |
| Gelt | Hynam Bridge | 0.37 m (Low) | 0.19 | 2.00 | Rising | 20th May 2012 at 15:00 |
| Gelyn | Cynefail | 0.18 m (Low) | 0.08 | 0.51 | Falling | 20th May 2012 at 16:45 |
| Gelyn | Cynefail | 0.18 m (Low) | 0.08 | 0.51 | Falling | 20th May 2012 at 16:45 |
| Gilling Beck | Gilling West | 0.52 m (Low) | 0.28 | 1.90 | Rising | 20th May 2012 at 18:15 |
| Ginge Brook | Steventon | 0.69 m (Low/Medium) | 0.52 | 1.00 | Rising | 20th May 2012 at 09:00 |
| Glaslyn | Beddgelert | 0.41 m (Low) | 0.38 | 1.07 | Rising | 20th May 2012 at 16:45 |
| Glen Stream | Honiton | 1.04 m (Medium) | 0.40 | 1.35 | Rising | 20th May 2012 at 06:00 |
| Glendermackin | Threlkeld | 0.53 m (Low) | 0.50 | 2.00 | Rising | 20th May 2012 at 15:00 |
| Glossop Brook | High Street West | 0.10 m (Very Low) | 0.11 | 0.60 | Falling | 20th May 2012 at 15:00 |
| Goldrill Beck | Patterdale | 0.42 m (Low) | 0.31 | 0.99 | Rising | 20th May 2012 at 15:00 |
| Gowy | Bridge Trafford | 0.30 m (Low) | 0.19 | 1.00 | Falling | 20th May 2012 at 15:00 |
| Goyt | Marple Bridge | 0.30 m (Low) | 0.14 | 0.95 | Falling | 20th May 2012 at 15:00 |
| Graveney | Abercairn Road | 0.90 m (Low) | 0.83 | 1.90 | Rising | 20th May 2012 at 15:30 |
| Graveney | Longley Road | 0.10 m (Low) | 0.05 | 1.80 | Falling | 20th May 2012 at 15:30 |
| Graveney | Abercairn Road | 0.90 m (Low) | 0.83 | 1.90 | Rising | 20th May 2012 at 15:30 |
| Great Stour | Brown Mill | 0.14 m (Low) | 0.08 | 1.65 | Falling | 20th May 2012 at 15:30 |
| Great Stour | Chart Leacon | 0.15 m (Low) | 0.10 | 0.45 | Falling | 20th May 2012 at 10:30 |
| Great Stour | Horton weir | 0.22 m (Low) | 0.15 | 1.00 | Falling | 20th May 2012 at 15:30 |
| Great Stour | Hothfield Upstream | 0.12 m (Low) | 0.07 | 1.26 | Falling | 20th May 2012 at 15:30 |
| Great Stour | Vauxhall Bridge | 0.51 m (Low/Medium) | 0.11 | 1.20 | Rising | 20th May 2012 at 15:30 |
| Great Stour | Wye | 0.19 m (Low) | 0.11 | 1.25 | Falling | 20th May 2012 at 15:30 |
| Greta | Greta Bridge | 1.13 m (Low) | 0.95 | 3.00 | Rising | 20th May 2012 at 15:00 |
| Greta | Low Briery | 0.57 m (Low) | 0.39 | 1.60 | Rising | 20th May 2012 at 15:00 |
| Grimsby And Ancholme | Immingham | 0.00 m (Very High) | 0.00 | 0.00 | Falling | 20th May 2012 at 20:00 |
| Gronw | Whitland | 0.35 m (Low/Medium) | 0.09 | 0.87 | Unchanged | 20th May 2012 at 16:45 |
| Groundwater level | Tilshead | 0.00 m (Very High) | 0.00 | 0.00 | Falling | 20th May 2012 at 04:15 |
| Groundwater level | Woodyates | 0.00 m (Very High) | 0.00 | 0.00 | Falling | 20th May 2012 at 04:15 |
| Groundwater level | Ashton Farm | 0.00 m (Very High) | 0.00 | 0.00 | Falling | 20th May 2012 at 04:15 |
| Grwyne Fawr | Millbrook | 0.19 m (Low/Medium) | 0.06 | 0.41 | Falling | 20th May 2012 at 16:45 |
| Gwaun | Cilrhedyn Bridge | 0.28 m (Low/Medium) | 0.15 | 0.56 | Falling | 20th May 2012 at 16:45 |
| Gwendraeth Fach | Llangendeirne | 0.57 m (Low) | 0.44 | 1.11 | Rising | 20th May 2012 at 19:30 |
| Gwendraeth Fawr | Pontyberem | 0.44 m (Low) | 0.44 | 0.99 | Rising | 20th May 2012 at 16:45 |
| Gwili | Glan Gwili | 0.55 m (Low/Medium) | 0.34 | 1.06 | Rising | 20th May 2012 at 16:45 |
| Gwnedraeth Fawr | Pontyates | 0.29 m (Low/Medium) | 0.07 | 0.64 | Falling | 20th May 2012 at 16:45 |
| Gwydderig | Pont Felindre | 0.60 m (Low) | 0.50 | 0.96 | Rising | 20th May 2012 at 16:45 |
| Gwyrfai | Bontnewydd | 0.23 m (Low) | 0.22 | 0.64 | Falling | 20th May 2012 at 16:45 |
| Hagnaby Beck | Hagnaby Beck | 0.08 m (Low) | 0.03 | 2.25 | Falling | 20th May 2012 at 05:15 |
| Halsewater | Halsewater | 0.38 m (Medium) | 0.20 | 0.55 | Rising | 20th May 2012 at 04:00 |
| Harpers Brook | Harpers Brook | 0.18 m (Low) | 0.09 | 1.29 | Falling | 20th May 2012 at 06:00 |
| Hart | Crondall Pond | 0.00 m (Low) | 0.00 | 0.90 | Falling | 30th November -0001 at 00:00 |
| Hart | Crookham Village | 0.47 m (Low) | 0.36 | 1.15 | Rising | 20th May 2012 at 09:00 |
| Hart | Bramshill | 0.05 m (Very Low) | 0.10 | 0.47 | Falling | 20th May 2012 at 09:00 |
| Harwood Beck | Harwood | 0.20 m (Low) | 0.13 | 0.58 | Falling | 20th May 2012 at 18:15 |
| Haw Beck | Skibeden Beck | 0.21 m (Low) | 0.16 | 1.60 | Falling | 20th May 2012 at 18:00 |
| Haweswater Beck | Burnbanks | 0.08 m (Low) | 0.07 | 1.00 | Falling | 20th May 2012 at 15:00 |
| Hebden Water | Nutclough | 0.24 m (Low) | 0.10 | 0.97 | Falling | 20th May 2012 at 18:00 |
| Heighington Beck | Heighington Beck | 0.09 m (Low/Medium) | 0.02 | 0.18 | Falling | 20th May 2012 at 06:00 |
| Henmore Brook | Ashbourne | 0.19 m (Low) | 0.15 | 0.35 | Falling | 20th May 2012 at 18:00 |
| Hillfarrance Brook | Milverton | 0.21 m (Low) | 0.11 | 0.70 | Falling | 20th May 2012 at 04:00 |
| Hindburn | Wray | 0.30 m (Low/Medium) | 0.12 | 0.79 | Falling | 20th May 2012 at 15:00 |
| Hinksey Stream | Cold Harbour | 1.01 m (Low/Medium) | 0.84 | 1.19 | Rising | 20th May 2012 at 09:00 |
| Hodder | Hodder Place | 0.38 m (Low) | 0.25 | 1.90 | Rising | 20th May 2012 at 15:00 |
| Hodge Beck | Cherry Farm | 0.26 m (Low/Medium) | 0.16 | 0.45 | Falling | 20th May 2012 at 18:00 |
| Hoe Stream | Woking South | 0.37 m (Low) | 0.30 | 1.20 | Rising | 20th May 2012 at 09:00 |
| Hogsmill | Ewell | 0.05 m (Low) | 0.03 | 0.84 | Falling | 20th May 2012 at 15:30 |
| Hogsmill | Worcester Road | 0.89 m (Low) | 0.89 | 2.25 | Rising | 20th May 2012 at 15:30 |
| Hogsmill | Kingston Hogsmill | 0.20 m (Low) | 0.11 | 0.70 | Falling | 20th May 2012 at 15:30 |
| Hogsmill | Ewell | 0.05 m (Low) | 0.03 | 0.84 | Falling | 20th May 2012 at 15:30 |
| Hogsmill | Worcester Road | 0.89 m (Low) | 0.89 | 2.25 | Rising | 20th May 2012 at 15:30 |
| Hogsmill | Kingston Hogsmill | 0.20 m (Low) | 0.11 | 0.70 | Falling | 20th May 2012 at 15:30 |
| Holgate Beck | Holgate | 0.14 m (Low) | 0.00 | 1.25 | Falling | 20th May 2012 at 18:15 |
| Honddu | Tafalog | 0.28 m (Low/Medium) | 0.14 | 0.45 | Falling | 20th May 2012 at 21:15 |
| Honddu | Upper Chapel | 0.10 m (Very Low) | 0.12 | 0.54 | Falling | 20th May 2012 at 16:45 |
| Honddu | Tafalog | 0.28 m (Low/Medium) | 0.14 | 0.45 | Falling | 20th May 2012 at 21:15 |
| Horner Water | West Luccombe | 0.12 m (Low) | 0.04 | 0.90 | Falling | 20th May 2012 at 04:15 |
| Horsebere Brook | Witcombe | 0.00 m (Very Low) | 0.11 | 0.36 | Falling | 30th November -0001 at 00:00 |
| Horsebere Brook | Clomoney Way | 0.00 m (Very High) | 0.00 | 0.00 | Falling | 30th November -0001 at 00:00 |
| Hovingham Beck | Hovingham | 0.09 m (Low) | 0.04 | 0.45 | Falling | 20th May 2012 at 18:00 |
| Hughenden Stream | Wycombe Hugh | 0.00 m (Low) | 0.00 | 0.18 | Falling | 30th November -0001 at 00:00 |
| Hull and East Riding | Bridlington | 0.00 m (Very High) | 0.00 | 0.00 | Falling | 20th May 2012 at 20:00 |
| Hull and East Riding | Spurn Point | 0.00 m (Very High) | 0.00 | 0.00 | Falling | 20th May 2012 at 20:00 |
| Humber | Barton on Humber | 0.39 m (Low) | 0.27 | 1.20 | Unchanged | 20th May 2012 at 06:00 |
| Huntingfield Watercourse | Huntingfield | 0.59 m (Low/Medium) | 0.00 | 1.95 | Rising | 20th May 2012 at 04:15 |
| Ifield Brook | Ifield | 0.78 m (Low) | 0.73 | 2.05 | Rising | 20th May 2012 at 15:30 |
| Ingrebourne | Harold Park | 0.98 m (Very High) | 0.00 | 0.80 | Rising | 20th May 2012 at 09:00 |
| Ingrebourne - Upstream | Upminster | 0.12 m (Low) | 0.09 | 0.70 | Falling | 20th May 2012 at 15:30 |
| Ings Beck | Wakefield Colinsway | 0.29 m (Low) | 0.22 | 0.60 | Falling | 20th May 2012 at 18:00 |
| Ings Beck | Wakefield | 0.06 m (Low) | 0.04 | 0.75 | Falling | 20th May 2012 at 18:00 |
| Irfon | Cilmery | 0.42 m (Low) | 0.22 | 1.15 | Rising | 20th May 2012 at 16:45 |
| Irfon | Abernant | 0.35 m (Low) | 0.27 | 1.00 | Unchanged | 20th May 2012 at 16:45 |
| Irfon | Abernant | 0.35 m (Low) | 0.27 | 1.00 | Unchanged | 20th May 2012 at 16:45 |
| Irfon | Cilmery | 0.42 m (Low) | 0.22 | 1.15 | Rising | 20th May 2012 at 16:45 |
| Irish Sea | Liverpool Gladstone Dock | 0.00 m (Very High) | 0.00 | 0.00 | Falling | 20th May 2012 at 15:00 |
| Irk | Collyhurst Weir | 0.16 m (Low) | 0.12 | 0.30 | Falling | 20th May 2012 at 15:00 |
| Irwell | Adelphi Weir | 0.23 m (Low) | 0.18 | 0.76 | Falling | 20th May 2012 at 15:00 |
| Irwell | Bury Ground | 0.28 m (Low) | 0.23 | 1.30 | Falling | 20th May 2012 at 15:00 |
| Irwell | Irwell Vale | 0.30 m (Low) | 0.24 | 1.30 | Falling | 20th May 2012 at 15:00 |
| Irwell | Kearsley | 0.71 m (Low) | 0.60 | 2.30 | Rising | 20th May 2012 at 15:00 |
| Irwell | Lower Broughton | 0.35 m (Low) | 0.18 | 1.11 | Falling | 20th May 2012 at 15:00 |
| Irwell | Manchester Racecourse | 0.81 m (Low) | 0.73 | 2.70 | Rising | 20th May 2012 at 15:00 |
| Irwell | Ramsbottom Weir | 0.35 m (Low) | 0.29 | 1.80 | Falling | 20th May 2012 at 15:00 |
| Irwell | Stubbins | 0.18 m (Low) | 0.08 | 1.30 | Falling | 20th May 2012 at 15:00 |
| Ise | Harrowden | 0.24 m (Low) | 0.13 | 1.17 | Falling | 20th May 2012 at 06:00 |
| Ise | Slade Brook | 0.15 m (Low) | 0.08 | 1.30 | Falling | 20th May 2012 at 03:45 |
| Itchen | Woolston | 0.00 m (Very High) | 0.00 | 0.00 | Falling | 20th May 2012 at 15:45 |
| Itchen | Allbrook weir | 0.38 m (Medium) | 0.16 | 0.53 | Rising | 20th May 2012 at 15:30 |
| Itchen | Bishopstoke | 0.70 m (Low) | 0.45 | 1.70 | Rising | 20th May 2012 at 10:30 |
| Itchen | City Mill | 0.00 m (Very Low) | 0.39 | 0.78 | Falling | 20th May 2012 at 15:30 |
| Itchen | Easton | 0.67 m (Low/Medium) | 0.51 | 1.10 | Rising | 20th May 2012 at 15:30 |
| Itchen | Highbridge weir | 0.45 m (Low/Medium) | 0.26 | 0.75 | Rising | 20th May 2012 at 15:30 |
| Itchen | Riverside Park | 2.30 m (Medium) | 0.95 | 3.35 | Rising | 20th May 2012 at 15:30 |
| Itchen | Wharf Mill | 0.42 m (Low) | 0.32 | 0.81 | Rising | 17th May 2012 at 04:30 |
| Ithon | Llanddewi | 0.17 m (Low) | 0.04 | 0.73 | Falling | 20th May 2012 at 16:45 |
| Ithon | Disserth | 0.41 m (Low) | 0.17 | 1.28 | Rising | 20th May 2012 at 16:45 |
| Ithon | Disserth | 0.41 m (Low) | 0.17 | 1.28 | Rising | 20th May 2012 at 16:45 |
| Ithon | Llanddewi | 0.17 m (Low) | 0.04 | 0.73 | Falling | 20th May 2012 at 16:45 |
| Jordan | River Jordan | 0.06 m (Low) | 0.02 | 0.76 | Falling | 20th May 2012 at 04:15 |
| Jordan | Litte Bowden Flood Storage Reservoir | 0.14 m (Low) | 0.04 | 1.39 | Falling | 20th May 2012 at 14:15 |
| Keekle | St Leonards | 0.45 m (Low) | 0.43 | 2.60 | Rising | 20th May 2012 at 15:00 |
| Keer | High River Keer | 0.19 m (Low) | 0.10 | 0.52 | Falling | 20th May 2012 at 15:00 |
| Kennet | Winterborne Monkton | 0.25 m (Low/Medium) | 0.00 | 0.52 | Falling | 20th May 2012 at 09:00 |
| Kennet | Marlborough | 0.15 m (Low/Medium) | 0.04 | 0.37 | Falling | 20th May 2012 at 15:45 |
| Kennet | Eddington | 0.00 m (Very Low) | 0.39 | 0.80 | Falling | 30th November -0001 at 00:00 |
| Kennet | Newbury | 4.95 m (Low) | 4.94 | 5.16 | Rising | 20th May 2012 at 15:45 |
| Kennet | Theale | 0.38 m (Low/Medium) | 0.23 | 0.83 | Rising | 20th May 2012 at 15:45 |
| Kennet | Knighton Main | 0.16 m (Low) | 0.08 | 0.43 | Falling | 20th May 2012 at 09:00 |
| Kennet - Upstream | Blakes Lock | 0.08 m (Low/Medium) | 0.00 | 0.20 | Falling | 20th May 2012 at 21:30 |
| Kennett | Ousden | 4.72 m (Medium) | 3.68 | 5.07 | Rising | 20th May 2012 at 06:00 |
| Kensey | Launceston | 0.21 m (Low) | 0.00 | 1.40 | Falling | 20th May 2012 at 06:15 |
| Kent | Bowston | 0.22 m (Low) | 0.13 | 1.20 | Falling | 20th May 2012 at 15:00 |
| Kent | Sedgwick | 0.41 m (Low) | 0.19 | 2.50 | Rising | 20th May 2012 at 15:00 |
| Kent | Victoria Bridge | 1.29 m (Low) | 1.20 | 2.30 | Rising | 20th May 2012 at 15:00 |
| Key | Purton Stoke | 0.58 m (Low) | 0.50 | 1.75 | Rising | 20th May 2012 at 09:00 |
| Kielder Burn | Kielder Burn | 0.23 m (Low) | 0.15 | 1.50 | Falling | 20th May 2012 at 18:30 |
| Killhope Burn | Wearhead | 0.13 m (Low) | 0.01 | 1.13 | Falling | 20th May 2012 at 18:15 |
| Kilton Beck | Skinningrove | 4.57 m (Medium) | 4.43 | 4.70 | Rising | 20th May 2012 at 18:15 |
| Kingsclere Brook | Kingsclere | 0.15 m (Medium) | 0.08 | 0.21 | Falling | 20th May 2012 at 09:00 |
| Kyd Brook | Hazelmere Road | 0.55 m (Medium) | 0.14 | 0.90 | Rising | 20th May 2012 at 15:30 |
| Kyd Brook | Lower Camden | 0.88 m (Low) | 0.83 | 1.90 | Rising | 20th May 2012 at 15:30 |
| Kyd Brook | Kydbrook Close | 0.52 m (Low) | 0.47 | 0.80 | Rising | 20th May 2012 at 15:30 |
| Kyd Brook | Eynsford Close | 0.41 m (Low/Medium) | 0.05 | 0.90 | Rising | 20th May 2012 at 15:30 |
| Kyd Brook | Gosshill Road | 0.00 m (Very Low) | 0.03 | 1.10 | Falling | 30th November -0001 at 00:00 |
| Kyd Brook | Hazelmere Road | 0.55 m (Medium) | 0.14 | 0.90 | Rising | 20th May 2012 at 15:30 |
| Kyd Brook | Lower Camden | 0.88 m (Low) | 0.83 | 1.90 | Rising | 20th May 2012 at 15:30 |
| Kyd Brook | Kydbrook Close | 0.52 m (Low) | 0.47 | 0.80 | Rising | 20th May 2012 at 15:30 |
| Kyd Brook | Eynsford Close | 0.41 m (Low/Medium) | 0.05 | 0.90 | Rising | 20th May 2012 at 15:30 |
| Kyd Brook | Woodlands Road | 1.10 m (Low) | 1.04 | 1.90 | Rising | 20th May 2012 at 15:30 |
| Kym | Riseley | 0.31 m (Low/Medium) | 0.16 | 0.64 | Falling | 20th May 2012 at 04:00 |
| Laceby Beck | Laceby | 0.07 m (Low) | 0.02 | 6.84 | Falling | 20th May 2012 at 06:00 |
| Laceby Beck | River Freshney Grimsby | 0.39 m (Low/Medium) | 0.19 | 0.78 | Rising | 20th May 2012 at 06:00 |
| Lake Bassenthwaite | Castle Howe | 1.02 m (Low/Medium) | 0.66 | 2.07 | Rising | 20th May 2012 at 15:00 |
| Lake Coniston | Brown Howe | 0.83 m (Low/Medium) | 0.43 | 1.38 | Rising | 20th May 2012 at 15:00 |
| Lake Windermere | Far Sawrey | 0.45 m (Low/Medium) | 0.23 | 0.99 | Rising | 20th May 2012 at 15:00 |
| Lambourn | Lambourn | 0.81 m (Low/Medium) | 0.70 | 1.08 | Rising | 20th May 2012 at 09:00 |
| Lambourn | Eastbury | 0.61 m (Low) | 0.51 | 1.15 | Rising | 20th May 2012 at 09:00 |
| Lambourn | Shaw | 0.14 m (Low) | 0.11 | 0.32 | Falling | 20th May 2012 at 15:45 |
| Landkey Brook | Swimbridge | 0.11 m (Low) | 0.05 | 0.32 | Falling | 20th May 2012 at 06:00 |
| Langford Brook (Bicester) | Langford Village | 0.41 m (Medium) | 0.10 | 0.69 | Rising | 20th May 2012 at 09:00 |
| Lark | Sicklesmere | 0.32 m (Low) | 0.23 | 0.75 | Falling | 20th May 2012 at 06:30 |
| Law Brook | Albury | 0.07 m (Low) | 0.05 | 0.15 | Falling | 20th May 2012 at 15:45 |
| Leach | Little Farringdon | 0.15 m (Very Low) | 1.39 | 1.66 | Falling | 20th May 2012 at 09:00 |
| Leach | Lechlade | 0.28 m (Medium) | 0.03 | 0.42 | Falling | 20th May 2012 at 09:00 |
| Leam | Eathorpe | 0.00 m (Very Low) | 0.24 | 1.16 | Falling | 30th November -0001 at 00:00 |
| Lee | Hoddesdon, Rye Bridge | 2.83 m (Low) | 2.82 | 3.10 | Rising | 20th May 2012 at 15:30 |
| Lee | Lea Bridge | 5.80 m (Low) | 5.78 | 6.10 | Rising | 20th May 2012 at 15:30 |
| Lee | Hoddesdon, Rye Bridge | 2.83 m (Low) | 2.82 | 3.10 | Rising | 20th May 2012 at 15:30 |
| Lee | Lea Bridge | 5.80 m (Low) | 5.78 | 6.10 | Rising | 20th May 2012 at 15:30 |
| Lee (Lower) | Walthamstow, Low Hall | 0.05 m (Low) | 0.01 | 1.00 | Falling | 20th May 2012 at 15:30 |
| Lee (Lower) | Walthamstow, Low Hall | 0.05 m (Low) | 0.01 | 1.00 | Falling | 20th May 2012 at 15:30 |
| Lee (Upper) | Luton, Stockingstone Road | 0.14 m (Low) | 0.01 | 2.10 | Falling | 20th May 2012 at 09:00 |
| Lee (Upper) | Luton Hoo | 0.26 m (Medium) | 0.00 | 0.46 | Falling | 20th May 2012 at 09:00 |
| Lee (Upper) | Harpenden | 0.78 m (Low/Medium) | 0.64 | 1.12 | Rising | 20th May 2012 at 09:00 |
| Lee (Upper) - Upstream | Luton, Toddington Road | 0.06 m (Low) | 0.00 | 0.90 | Falling | 20th May 2012 at 09:00 |
| Leigh Brook | Leigh Court | 0.55 m (Low/Medium) | 0.07 | 1.40 | Rising | 20th May 2012 at 18:00 |
| Leri | Dolybont | 0.15 m (Low/Medium) | 0.06 | 0.37 | Falling | 20th May 2012 at 16:45 |
| Letcombe Brook | Wantage | 0.50 m (Low/Medium) | 0.37 | 0.77 | Rising | 20th May 2012 at 09:00 |
| Letcombe Brook | Letcombe Bassett | 0.15 m (Medium) | 0.06 | 0.20 | Falling | 20th May 2012 at 09:00 |
| Letcombe Brook | Letcombe Regis | 0.05 m (Low/Medium) | 0.02 | 0.10 | Falling | 20th May 2012 at 09:00 |
| Levisham Beck | Levisham Mill | 0.09 m (Low) | 0.04 | 0.27 | Falling | 20th May 2012 at 18:00 |
| Limey Water | Rawtenstall | 0.11 m (Low) | 0.03 | 0.36 | Falling | 20th May 2012 at 15:00 |
| Lincoln Drainage Area | Lincoln Monson Street | 0.49 m (Low) | 0.12 | 2.96 | Rising | 20th May 2012 at 03:45 |
| Little Dart | Chulmleigh | 0.47 m (Low/Medium) | 0.17 | 0.92 | Rising | 20th May 2012 at 04:00 |
| Little Ouse | Little Ouse | 1.86 m (Low/Medium) | 1.64 | 2.10 | Rising | 20th May 2012 at 06:00 |
| Little Ouse | Thetford Coffee Mill Sluice | 0.62 m (Low/Medium) | 0.56 | 0.68 | Rising | 20th May 2012 at 05:15 |
| Little Stour Trib Great Stour | Littlebourne | 0.01 m (Very Low) | 0.02 | 0.18 | Falling | 20th May 2012 at 15:30 |
| Littlemead Brook | Cranleigh | 1.39 m (Low/Medium) | 1.23 | 1.60 | Rising | 20th May 2012 at 09:00 |
| Litton Cheney Stream | Litton Cheney | 0.14 m (Low/Medium) | 0.10 | 0.23 | Falling | 20th May 2012 at 04:00 |
| Lledan Brook | Welshpool | 0.14 m (Low) | 0.09 | 0.38 | Falling | 20th May 2012 at 16:45 |
| Lledr | Pont Gethin | 0.34 m (Low) | 0.18 | 1.03 | Unchanged | 20th May 2012 at 16:45 |
| Llyfni | Aberkenfig | 0.47 m (Low/Medium) | 0.28 | 0.86 | Rising | 20th May 2012 at 17:00 |
| Llyfni | Maesteg | 0.26 m (Low/Medium) | 0.06 | 0.54 | Falling | 20th May 2012 at 16:45 |
| Llyfni | Coytrahen | 0.28 m (Low) | 0.18 | 0.61 | Falling | 20th May 2012 at 16:45 |
| Llyfni | Three Cocks | 0.47 m (Medium) | 0.17 | 0.76 | Rising | 20th May 2012 at 16:45 |
| Llyfni | Pont y Cim | 0.17 m (Low) | 0.10 | 0.46 | Falling | 20th May 2012 at 16:45 |
| Llynfi | Three Cocks | 0.47 m (Medium) | 0.17 | 0.76 | Rising | 20th May 2012 at 16:45 |
| Lod | Halfway Bridge | 0.07 m (Low) | 0.02 | 1.50 | Falling | 20th May 2012 at 15:45 |
| Lod | Lodsbridge | 0.91 m (Low/Medium) | 0.47 | 1.84 | Rising | 20th May 2012 at 15:45 |
| Loddon | Pyotts Bridge | 1.10 m (Medium) | 1.00 | 1.20 | Rising | 20th May 2012 at 09:00 |
| Loddon | Longbridge Mill | 0.35 m (Medium) | 0.18 | 0.43 | Rising | 20th May 2012 at 09:00 |
| Loddon | Arborfield Bridge | 0.21 m (Very Low) | 0.28 | 1.06 | Falling | 20th May 2012 at 09:00 |
| Loddon | Sindlesham Mill | 0.33 m (Medium) | 0.10 | 0.54 | Falling | 20th May 2012 at 09:00 |
| Loddon | Twyford | 0.98 m (Low/Medium) | 0.50 | 1.65 | Rising | 20th May 2012 at 21:30 |
| Long Brook | Plympton | 0.27 m (Medium) | 0.01 | 0.50 | Falling | 20th May 2012 at 04:00 |
| Longdon Brook | Longdon Marsh | 0.00 m (Very Low) | 0.13 | 1.67 | Falling | 30th November -0001 at 00:00 |
| Lostock | Bamber Bridge | 0.13 m (Low) | 0.06 | 1.75 | Falling | 20th May 2012 at 19:30 |
| Lostock | Littlewood Bridge | 0.28 m (Low) | 0.21 | 2.70 | Falling | 20th May 2012 at 15:00 |
| Loughor | Tir Y Dail | 0.82 m (Low/Medium) | 0.74 | 1.05 | Rising | 20th May 2012 at 16:45 |
| Lower Witham | Billinghay | 0.57 m (Low) | 0.12 | 2.29 | Rising | 20th May 2012 at 03:45 |
| Lud | Louth | 0.16 m (Low/Medium) | 0.06 | 0.30 | Falling | 20th May 2012 at 06:00 |
| Lugg | Monaughty | 0.25 m (Medium) | 0.09 | 0.38 | Falling | 20th May 2012 at 16:45 |
| Lugg | Lugwardine | 0.95 m (Low/Medium) | 0.15 | 2.52 | Rising | 20th May 2012 at 18:00 |
| Lugg | Byton | 0.55 m (Low/Medium) | 0.28 | 0.90 | Rising | 20th May 2012 at 18:00 |
| Lugg | Butts Bridge | 1.03 m (Low/Medium) | 0.76 | 1.74 | Rising | 20th May 2012 at 18:00 |
| Lugg | Butts Bridge | 1.03 m (Low/Medium) | 0.76 | 1.74 | Rising | 20th May 2012 at 18:00 |
| Lugg | Byton | 0.55 m (Low/Medium) | 0.28 | 0.90 | Rising | 20th May 2012 at 18:00 |
| Lugg | Lugwardine | 0.95 m (Low/Medium) | 0.15 | 2.52 | Rising | 20th May 2012 at 18:00 |
| Lugg | Monaughty | 0.25 m (Medium) | 0.09 | 0.38 | Falling | 20th May 2012 at 16:45 |
| Lune | Caton | 0.58 m (Low) | 0.28 | 3.20 | Rising | 20th May 2012 at 15:00 |
| Lune | Killington | 0.48 m (Low) | 0.17 | 2.00 | Rising | 20th May 2012 at 15:00 |
| Lune | Lancaster Quay | 1.56 m (Low) | 1.50 | 6.00 | Rising | 20th May 2012 at 15:00 |
| Lune | Lunes Bridge | 0.58 m (Low/Medium) | 0.22 | 1.35 | Rising | 20th May 2012 at 15:00 |
| Lune And Wyre | Fleetwood | 0.00 m (Very High) | 0.00 | 0.00 | Falling | 20th May 2012 at 15:00 |
| Lune And Wyre | Heysham | 0.00 m (Very High) | 0.00 | 0.00 | Falling | 20th May 2012 at 15:00 |
| Lwyd | Ponthir Weir | 0.00 m (Very Low) | 0.30 | 0.82 | Falling | 20th May 2012 at 16:45 |
| Lwyd | Pontnewynydd / Abersychan | 0.26 m (Low/Medium) | 0.07 | 0.64 | Falling | 20th May 2012 at 16:45 |
| Lymington | Lymington | 0.00 m (Very High) | 0.00 | 0.00 | Falling | 20th May 2012 at 15:30 |
| Lymington | Brockenhurst | 0.28 m (Low) | 0.13 | 1.03 | Falling | 20th May 2012 at 15:30 |
| Lymington | Meerut Road | 0.06 m (Low) | 0.03 | 0.37 | Falling | 14th May 2012 at 04:30 |
| Lymn & Steeping | Partney | 0.10 m (Low) | 0.02 | 0.74 | Falling | 19th May 2012 at 06:30 |
| Lyne | Cliff Bridge | 0.39 m (Low) | 0.22 | 2.40 | Rising | 20th May 2012 at 15:00 |
| Mangerton Brook | Powerstock | 0.04 m (Low) | 0.00 | 1.26 | Falling | 20th May 2012 at 04:15 |
| Marston Meysey Brook | Whetstone Bridge | 0.16 m (Low/Medium) | 0.00 | 0.39 | Falling | 20th May 2012 at 09:00 |
| Maud Foster/Stonebridge Drain | Cowbridge | 0.84 m (Low/Medium) | 0.31 | 1.62 | Rising | 20th May 2012 at 10:45 |
| Mawddach | Tyddyn Gwladys | 0.25 m (Low) | 0.17 | 0.78 | Falling | 20th May 2012 at 16:45 |
| Medbourne Brook | Medbourne | 0.06 m (Low) | 0.02 | 0.29 | Falling | 20th May 2012 at 06:00 |
| Medbourne Brook | Medbourne Flood Storage Reservoir | 0.30 m (Low) | 0.22 | 3.57 | Falling | 20th May 2012 at 05:30 |
| Medina | Cowes | 0.00 m (Very High) | 0.00 | 0.00 | Falling | 20th May 2012 at 15:30 |
| Medina | Gurnard | 0.11 m (Low) | 0.07 | 0.75 | Falling | 20th May 2012 at 15:30 |
| Medway | Gravesend | 0.00 m (Very High) | 0.00 | 0.00 | Falling | 19th April 2012 at 10:30 |
| Medway | Allington Lock | 0.00 m (Very Low) | 0.07 | 0.50 | Falling | 30th November -0001 at 00:00 |
| Medway | Allington Marina | 0.13 m (Low) | 0.09 | 0.50 | Falling | 20th May 2012 at 15:30 |
| Medway | Chafford | 0.31 m (Low) | 0.15 | 2.50 | Falling | 20th May 2012 at 15:30 |
| Medway | Colliers Land Bridge | 0.46 m (Low) | 0.25 | 2.75 | Rising | 20th May 2012 at 15:30 |
| Medway | East Farleigh Gate Upstream | 1.32 m (Low/Medium) | 1.16 | 1.49 | Rising | 19th May 2012 at 10:30 |
| Medway | Forest Row | 0.06 m (Low) | 0.04 | 1.30 | Falling | 20th May 2012 at 04:30 |
| Medway | Hartlake Bridge | 0.63 m (Low) | 0.59 | 1.25 | Rising | 20th May 2012 at 15:30 |
| Medway | Leigh Barrier Upstream | 0.83 m (Very High) | 0.00 | 0.00 | Rising | 20th May 2012 at 12:15 |
| Medway | Maidstone | 0.29 m (Low) | 0.23 | 1.25 | Falling | 20th May 2012 at 15:30 |
| Medway | Summerford Bridge | 0.10 m (Low) | 0.02 | 1.80 | Falling | 20th May 2012 at 15:30 |
| Medway | Teston | 0.33 m (Low) | 0.26 | 2.50 | Falling | 20th May 2012 at 15:30 |
| Medway | Town Lock | 1.20 m (Low) | 0.88 | 2.30 | Rising | 20th May 2012 at 15:30 |
| Medway | Queenborough | 0.00 m (Very High) | 0.00 | 0.00 | Falling | 20th May 2012 at 10:30 |
| Mells River | Stoke Bottom Farm | 0.13 m (Medium) | 0.00 | 0.18 | Falling | 20th May 2012 at 04:00 |
| Mellte | Pontneddfechan | 0.26 m (Low) | 0.17 | 0.69 | Falling | 20th May 2012 at 16:45 |
| Merlin's Brook | Merlins Bridge | 0.45 m (Low) | 0.39 | 0.75 | Rising | 20th May 2012 at 16:45 |
| Mersey | Fiddlers Ferry | 3.19 m (Low/Medium) | 2.39 | 4.58 | Rising | 20th May 2012 at 15:00 |
| Mersey | Westy | 3.75 m (Low/Medium) | 3.55 | 4.14 | Rising | 20th May 2012 at 15:00 |
| Mersey | Ashton Weir | 0.50 m (Low/Medium) | 0.25 | 1.06 | Rising | 20th May 2012 at 15:00 |
| Mersey | Brinksway | 0.55 m (Low) | 0.28 | 1.50 | Rising | 20th May 2012 at 15:00 |
| Mersey | Flixton Bridge | 0.44 m (Low) | 0.30 | 3.30 | Rising | 20th May 2012 at 15:00 |
| Mersey | Northenden | 0.38 m (Low) | 0.27 | 1.50 | Rising | 20th May 2012 at 15:00 |
| Midford Brook | Midford | 1.00 m (Low) | 0.49 | 2.90 | Rising | 20th May 2012 at 04:00 |
| Mill Bourne | Millbourne Bridge | 0.94 m (Low) | 0.92 | 1.77 | Rising | 20th May 2012 at 09:00 |
| Mimmshall Brook | Mimmshall Brook | 0.21 m (Very Low) | 0.95 | 1.80 | Falling | 20th May 2012 at 09:00 |
| Mimmshall Brook | North Mymms | 0.24 m (Low) | 0.04 | 1.50 | Falling | 20th May 2012 at 15:30 |
| Mimram | Whitwell | 0.05 m (Low) | 0.02 | 0.40 | Falling | 20th May 2012 at 09:00 |
| Mimram | Fulling Mill | 0.07 m (Low) | 0.00 | 0.45 | Falling | 20th May 2012 at 09:00 |
| Mimram | Panshanger | 0.42 m (Low) | 0.31 | 0.80 | Rising | 20th May 2012 at 15:30 |
| Mint | Mint Bridge | 0.38 m (Low) | 0.18 | 1.20 | Rising | 20th May 2012 at 15:00 |
| Mires Beck | North Cave | 0.22 m (Medium) | 0.09 | 0.32 | Falling | 20th May 2012 at 18:00 |
| Misbourne | Missenden | 0.09 m (Low) | 0.04 | 0.70 | Falling | 20th May 2012 at 09:00 |
| Mole | Gatwick Airport | 0.19 m (Low) | 0.18 | 1.80 | Falling | 20th May 2012 at 15:30 |
| Mole | Horley | 0.43 m (Low) | 0.19 | 2.15 | Rising | 20th May 2012 at 15:30 |
| Mole | Kinnersley Manor | 0.22 m (Low) | 0.12 | 1.40 | Falling | 20th May 2012 at 15:30 |
| Mole | Dorking | 0.15 m (Low) | 0.09 | 1.30 | Falling | 20th May 2012 at 15:30 |
| Mole | Leatherhead | 1.15 m (Low) | 1.01 | 2.40 | Rising | 20th May 2012 at 15:30 |
| Mole | Downside Bridge | 1.10 m (Low) | 1.01 | 2.40 | Rising | 20th May 2012 at 15:30 |
| Mole | Esher | 1.49 m (Low) | 1.27 | 4.02 | Rising | 20th May 2012 at 15:30 |
| Mole | Stafford Bridge | 0.70 m (Low) | 0.63 | 2.50 | Rising | 20th May 2012 at 15:30 |
| Monks Brook | Chandler's Ford | 0.10 m (Low) | 0.03 | 1.04 | Falling | 20th May 2012 at 15:45 |
| Monks Brook | Stoneham Lane | 0.12 m (Low) | 0.06 | 0.75 | Falling | 20th May 2012 at 15:30 |
| Monksilver Stream | Williton | 0.23 m (Low/Medium) | 0.02 | 0.50 | Falling | 20th May 2012 at 04:00 |
| Monksilver Stream | Monksilver | 0.33 m (Low) | 0.28 | 0.56 | Falling | 20th May 2012 at 04:15 |
| Monnow | Skenfrith | 0.00 m (Very High) | 0.00 | 0.00 | Rising | 30th November -0001 at 00:00 |
| Monnow | Monnow Gate | 0.00 m (Very High) | 0.00 | 0.00 | Rising | 30th November -0001 at 00:00 |
| Monnow | Grosmont | 0.00 m (Very Low) | 0.25 | 0.87 | Falling | 20th May 2012 at 16:45 |
| Monnow | Grosmont, Rhosllwyn | 0.66 m (Medium) | 0.25 | 0.87 | Rising | 20th May 2012 at 16:45 |
| Moors River | Hurn Court | 0.38 m (Low/Medium) | 0.23 | 0.64 | Rising | 20th May 2012 at 04:00 |
| Mutton Brook | Hampstead Suburb | 0.83 m (Low) | 0.80 | 1.89 | Rising | 20th May 2012 at 09:00 |
| Mutton Brook | Hampstead Suburb | 0.83 m (Low) | 0.80 | 1.89 | Rising | 20th May 2012 at 09:00 |
| Nail Bourne Tributary Little Stour | Bekesbourne | 0.00 m (Very Low) | 0.04 | 1.50 | Falling | 30th November -0001 at 00:00 |
| Nar | Setchy Bridge | 1.92 m (Low/Medium) | 1.67 | 2.53 | Rising | 20th May 2012 at 06:00 |
| Nazeing Brook | Lower Nazeing | 1.01 m (Very High) | 0.10 | 0.50 | Rising | 20th May 2012 at 15:30 |
| Nazeing Brook | Lower Nazeing | 1.01 m (Very High) | 0.10 | 0.50 | Rising | 20th May 2012 at 15:30 |
| Neath | Resolven | 0.43 m (Low) | 0.28 | 1.06 | Rising | 20th May 2012 at 16:45 |
| Nene | Kislingbury | 0.12 m (Low) | 0.04 | 1.89 | Falling | 20th May 2012 at 04:00 |
| Nene (N'hampton-Wollaston) | Bedford Road Sluice | 0.98 m (Low/Medium) | 0.94 | 1.04 | Rising | 20th May 2012 at 19:30 |
| Nene (N'hampton-Wollaston) | Cogenhoe | 0.39 m (Low/Medium) | 0.27 | 0.61 | Rising | 20th May 2012 at 04:15 |
| Nene (Orton - Wash) | West Lighthouse | 1.00 m (Very High) | 0.00 | 0.00 | Rising | 20th May 2012 at 08:45 |
| Nene (Orton - Wash) | Little Bridge | 0.88 m (Medium) | 0.05 | 1.35 | Rising | 20th May 2012 at 04:00 |
| Nene (Wollaston-Wansford) | Great Easton Flood Storage Reservoir | 0.35 m (Low) | 0.24 | 1.79 | Rising | 20th May 2012 at 05:30 |
| Nene (Wollaston-Wansford) | Wansford | 0.25 m (Low) | 0.18 | 1.38 | Falling | 20th May 2012 at 06:00 |
| Nene (Wollaston-Wansford) | Lilford | 0.44 m (Low) | 0.29 | 1.30 | Rising | 20th May 2012 at 16:15 |
| Nene - Brampton Branch | St Andrews Mill | 0.16 m (Low) | 0.07 | 1.26 | Falling | 20th May 2012 at 06:00 |
| Nene - Brampton Branch | St Andrews Bypass | 0.04 m (Low) | 0.00 | 1.24 | Falling | 20th May 2012 at 06:00 |
| Nene - Brampton Branch | Brixworth | 0.12 m (Low) | 0.05 | 1.50 | Falling | 20th May 2012 at 06:30 |
| Nene - Whitton Branch | Dodford | 0.12 m (Low) | 0.03 | 1.18 | Falling | 20th May 2012 at 04:00 |
| Norbury Brk | Thornton Heath | 1.02 m (Low) | 0.96 | 1.30 | Rising | 20th May 2012 at 15:45 |
| Norbury Brk | Thornton Heath | 1.02 m (Low) | 0.96 | 1.30 | Rising | 20th May 2012 at 15:45 |
| Norfolk Coast | Great Yarmouth | 0.00 m (Very High) | 0.00 | 0.00 | Falling | 30th November -0001 at 00:00 |
| North Cornwall Coast | St Ives | 0.00 m (Very High) | 0.00 | 0.00 | Falling | 20th May 2012 at 04:15 |
| North Cornwall Coast | Padstow | 0.00 m (Very High) | 0.00 | 0.00 | Falling | 20th May 2012 at 04:00 |
| North Cornwall Coast | Wadebridge | 0.00 m (Very High) | 0.00 | 0.00 | Falling | 20th May 2012 at 04:00 |
| North Cornwall Coast | Bude | 0.00 m (Very High) | 0.00 | 0.00 | Falling | 20th May 2012 at 06:00 |
| North Norfolk Coast | Cromer | 0.00 m (Very High) | 0.00 | 0.00 | Falling | 20th May 2012 at 21:45 |
| North Norfolk Coast | Wells | 0.00 m (Very High) | 0.00 | 0.00 | Falling | 20th May 2012 at 04:15 |
| North Sea | North Shields | 0.00 m (Very High) | 0.00 | 0.00 | Falling | 20th May 2012 at 20:00 |
| North Somerset Coast | Minehead | 0.00 m (Very High) | 0.00 | 0.00 | Falling | 20th May 2012 at 04:15 |
| Northmoor Main Drain | Northmoor Drain | 2.30 m (Low) | 2.03 | 3.13 | Rising | 20th May 2012 at 21:00 |
| Northumberland Rivers | Blyth | 0.00 m (Very High) | 0.00 | 0.00 | Falling | 20th May 2012 at 20:00 |
| Nunney Brook | Holwell | 0.79 m (Medium) | 0.40 | 1.10 | Rising | 20th May 2012 at 04:00 |
| Oakley Cross Beck | Oakley Cross Beck | 0.25 m (Low) | 0.19 | 0.70 | Falling | 20th May 2012 at 18:15 |
| Ock | Stanford Vale | 0.22 m (Low/Medium) | 0.07 | 0.45 | Falling | 20th May 2012 at 09:00 |
| Ock | Charney Bassett | 0.69 m (Low) | 0.49 | 1.44 | Rising | 20th May 2012 at 09:00 |
| Ock | Abingdon | 0.20 m (Low/Medium) | 0.00 | 0.80 | Falling | 20th May 2012 at 15:45 |
| Og | Poulton Farm | 0.19 m (Low/Medium) | 0.05 | 0.42 | Falling | 20th May 2012 at 09:00 |
| Ogden Brook | Little Bridge | 0.04 m (Low) | 0.01 | 0.31 | Falling | 20th May 2012 at 15:00 |
| Ogmore | Bridgend | 0.43 m (Low/Medium) | 0.27 | 0.86 | Rising | 20th May 2012 at 16:45 |
| Ogmore | Penybont | 0.49 m (Low) | 0.44 | 1.17 | Rising | 20th May 2012 at 16:45 |
| Ogmore | Brynmenyn | 0.35 m (Low/Medium) | 0.21 | 0.69 | Unchanged | 20th May 2012 at 16:45 |
| Ogwr Fawr | Ogmore Vale | 0.42 m (Low) | 0.36 | 0.69 | Rising | 20th May 2012 at 16:45 |
| Old Mill Stream Tributary East Stour | Aylesford Stream | 0.87 m (Very Low) | 0.89 | 1.64 | Rising | 20th May 2012 at 15:30 |
| Olway Brook | Olway Inn | 0.26 m (Low/Medium) | 0.06 | 0.82 | Falling | 20th May 2012 at 16:45 |
| Ottery | Trengune | 0.22 m (Low) | 0.11 | 1.00 | Falling | 20th May 2012 at 04:15 |
| Ouse | Ravenstone Mill Sluice | 1.18 m (Low) | 1.15 | 1.85 | Rising | 20th May 2012 at 19:30 |
| Ouse | Passenham | 2.08 m (Medium) | 1.30 | 2.35 | Rising | 20th May 2012 at 05:15 |
| Ouse | Ely | 1.57 m (Medium) | 1.44 | 1.67 | Rising | 20th May 2012 at 06:30 |
| Ouse Burn | Crag Hall | 0.16 m (Low) | 0.05 | 0.90 | Falling | 20th May 2012 at 18:30 |
| Ouse Burn | Gosforth | 0.32 m (Low) | 0.28 | 1.00 | Falling | 20th May 2012 at 18:30 |
| Ouse Burn | Woolsington | 0.09 m (Low) | 0.03 | 1.00 | Falling | 20th May 2012 at 18:30 |
| Ouse [So] | Barcombe near reservoir | 0.16 m (Low) | 0.08 | 1.00 | Falling | 20th May 2012 at 15:30 |
| Ouse [So] | Freshfield Bridge | 0.07 m (Low) | 0.01 | 2.00 | Falling | 13th April 2012 at 15:30 |
| Ouse [So] | Goldbridge | 0.37 m (Low) | 0.24 | 1.75 | Rising | 20th May 2012 at 15:30 |
| Ouse [So] | Lewes Corporation Yard | 0.77 m (Low) | 0.30 | 2.90 | Rising | 20th May 2012 at 15:30 |
| Ouse [So] | Lindfield Bridge | 1.36 m (Medium) | 0.48 | 1.90 | Rising | 20th May 2012 at 15:30 |
| Ouse [So] | Scrasebridge | 0.15 m (Low) | 0.03 | 1.44 | Falling | 20th May 2012 at 15:30 |
| Ouse [So] | Newhaven | 0.00 m (Very High) | 0.00 | 0.00 | Falling | 20th May 2012 at 15:45 |
| Ouzel | Caldecotte | 0.45 m (Low/Medium) | 0.31 | 0.73 | Rising | 20th May 2012 at 17:15 |
| Ouzel | Milton Keynes M1 Ultrasonic | 0.43 m (Low/Medium) | 0.08 | 1.11 | Rising | 20th May 2012 at 04:15 |
| Pang | Bucklebury | 0.04 m (Low) | 0.02 | 0.35 | Falling | 20th May 2012 at 09:00 |
| Pang | Tidmarsh | 1.17 m (Low) | 1.07 | 1.51 | Rising | 20th May 2012 at 09:00 |
| Pang | Pangbourne | 0.13 m (Low) | 0.08 | 0.34 | Falling | 20th May 2012 at 09:00 |
| Pang - Upstream | Frilsham | 0.04 m (Low) | 0.02 | 0.33 | Falling | 20th May 2012 at 09:00 |
| Par River | Ponts Vale | 0.20 m (Low/Medium) | 0.09 | 0.51 | Falling | 20th May 2012 at 04:00 |
| Par River | Luxulyan | 0.33 m (Low/Medium) | 0.18 | 0.71 | Falling | 20th May 2012 at 09:00 |
| Penberth Stream | Penberth | 0.35 m (Low/Medium) | 0.19 | 0.68 | Unchanged | 20th May 2012 at 06:00 |
| Pendle Water | Barden Lane | 0.27 m (Low) | 0.19 | 0.60 | Falling | 20th May 2012 at 15:00 |
| Pendle Water | Reedyford | 0.68 m (Low/Medium) | 0.07 | 1.66 | Rising | 20th May 2012 at 15:00 |
| Peris | Nant Peris | 0.76 m (Low) | 0.73 | 1.11 | Rising | 20th May 2012 at 16:45 |
| Perrancombe Stream | Rose in Vale | 0.31 m (Medium/High) | 0.15 | 0.35 | Falling | 20th May 2012 at 04:00 |
| Perrancombe Stream | Perrancoombe | 0.18 m (Low/Medium) | 0.01 | 0.46 | Falling | 20th May 2012 at 04:00 |
| Petteril | Newbiggin Bridge | 0.47 m (Low) | 0.36 | 1.50 | Rising | 20th May 2012 at 15:00 |
| Petteril | Harraby Green Business Park | 0.39 m (Medium) | 0.09 | 0.51 | Rising | 20th May 2012 at 15:00 |
| Petty's Brook | Chineham | 0.26 m (Low) | 0.26 | 1.25 | Falling | 20th May 2012 at 09:00 |
| Pickering Beck | Levisham Station | 0.33 m (Low) | 0.19 | 0.95 | Falling | 20th May 2012 at 18:00 |
| Pickering Beck | Pickering | 0.11 m (Low) | 0.02 | 1.00 | Falling | 20th May 2012 at 18:00 |
| Pincey Brook | Sheering Hall | 0.17 m (Low) | 0.08 | 1.00 | Falling | 20th May 2012 at 15:30 |
| Pinn | Ruislip | 0.15 m (Low) | 0.14 | 1.00 | Falling | 20th May 2012 at 09:00 |
| Pinn | Pinner, Avenue Road | 0.02 m (Very Low) | 0.05 | 1.00 | Falling | 20th May 2012 at 09:00 |
| Pinn | Pinner, Eastcote Road | 0.33 m (Low) | 0.28 | 1.00 | Falling | 20th May 2012 at 09:00 |
| Pinn | Uxbridge | 0.04 m (Low) | 0.04 | 0.70 | Falling | 20th May 2012 at 15:30 |
| Pinn | Pinner, Moss Close | 0.18 m (Low) | 0.18 | 1.10 | Falling | 20th May 2012 at 09:00 |
| Pinn | Ickenham, Swakeleys Road | 0.60 m (Low) | 0.56 | 1.12 | Rising | 20th May 2012 at 09:00 |
| Pinn | Uxbridge, Hercies Road | 0.71 m (Low) | 0.68 | 1.70 | Rising | 20th May 2012 at 09:00 |
| Pinn | Uxbridge, Philpots Bridge | 0.66 m (Low) | 0.57 | 1.50 | Rising | 20th May 2012 at 09:00 |
| Pinn | Waxwell Lane | 0.17 m (Low) | 0.15 | 0.50 | Falling | 20th May 2012 at 09:00 |
| Pishiobury Brook | Pishiobury Brook | 1.00 m (Low) | 0.96 | 2.00 | Rising | 20th May 2012 at 09:00 |
| Pointon Lode | Pointon Lode | 0.04 m (Low) | 0.02 | 0.56 | Falling | 20th May 2012 at 06:00 |
| Pol River | Polperro | 0.11 m (Low/Medium) | 0.00 | 0.25 | Falling | 20th May 2012 at 06:00 |
| Pool River | Winsford Road | 0.10 m (Low) | 0.07 | 0.75 | Falling | 20th May 2012 at 15:30 |
| Pool River | Winsford Road | 0.10 m (Low) | 0.07 | 0.75 | Falling | 20th May 2012 at 15:30 |
| Portreath Stream | Portreath | 0.04 m (Very High) | 0.00 | 0.00 | Falling | 20th May 2012 at 06:00 |
| Poyle Channel - Upstream | Poyle | 1.52 m (Medium) | 1.29 | 1.70 | Rising | 20th May 2012 at 09:00 |
| Pyl Brook | North Cheam | 0.97 m (Low) | 0.73 | 2.60 | Rising | 20th May 2012 at 15:30 |
| Pyl Brook | Morden Park | 0.51 m (Low) | 0.46 | 1.30 | Rising | 20th May 2012 at 15:30 |
| Pyl Brook | Kings College | 0.00 m (Very Low) | 0.09 | 1.60 | Falling | 30th November -0001 at 00:00 |
| Pyl Brook | North Cheam | 0.97 m (Low) | 0.73 | 2.60 | Rising | 20th May 2012 at 15:30 |
| Pyl Brook | Morden Park | 0.51 m (Low) | 0.46 | 1.30 | Rising | 20th May 2012 at 15:30 |
| Pyl Brook | Kings College | 0.00 m (Very Low) | 0.09 | 1.60 | Falling | 30th November -0001 at 00:00 |
| Pymmes Brook | New Barnet | 0.12 m (Low) | 0.02 | 0.90 | Falling | 20th May 2012 at 09:00 |
| Pymmes Brook | New Barnet | 0.12 m (Low) | 0.02 | 0.90 | Falling | 20th May 2012 at 09:00 |
| Pymmes Brook - Upstream | Arnos Park | 2.53 m (Low) | 2.51 | 2.70 | Rising | 20th May 2012 at 09:00 |
| Pymmes Brook - Upstream | Edmonton, Silver Street | 0.06 m (Low) | 0.04 | 1.30 | Falling | 20th May 2012 at 15:30 |
| Pymmes Brook - Upstream | Arnos Park | 2.53 m (Low) | 2.51 | 2.70 | Rising | 20th May 2012 at 09:00 |
| Pymmes Brook - Upstream | Edmonton, Silver Street | 0.06 m (Low) | 0.04 | 1.30 | Falling | 20th May 2012 at 15:30 |
| Quaggy | Chinbrook Park | 0.07 m (Low) | 0.04 | 0.70 | Falling | 20th May 2012 at 15:30 |
| Quaggy | Manor House Gardens | 0.04 m (Low) | 0.03 | 0.70 | Falling | 20th May 2012 at 15:30 |
| Quaggy | Chinbrook Park | 0.07 m (Low) | 0.04 | 0.70 | Falling | 20th May 2012 at 15:30 |
| Quaggy | Manor House Gardens | 0.04 m (Low) | 0.03 | 0.70 | Falling | 20th May 2012 at 15:30 |
| Quin | Braughing | 0.10 m (Low) | 0.06 | 0.80 | Falling | 20th May 2012 at 15:30 |
| Radlett Brook | Radlett | 0.40 m (Low) | 0.29 | 1.10 | Rising | 20th May 2012 at 09:00 |
| Rags Brook | Cheshunt, Rosedale way | 0.82 m (Low) | 0.75 | 2.25 | Rising | 20th May 2012 at 09:00 |
| Rags Brook | Cheshunt, Rosedale way | 0.82 m (Low) | 0.75 | 2.25 | Rising | 20th May 2012 at 09:00 |
| Rase | Market Rasen | 0.13 m (Low) | 0.06 | 0.68 | Falling | 20th May 2012 at 04:15 |
| Ravensbourne | Magpie Hall Lane | 0.92 m (Low) | 0.92 | 1.40 | Rising | 20th May 2012 at 15:30 |
| Ravensbourne | Beckenham Park | 0.54 m (Low) | 0.47 | 1.58 | Rising | 20th May 2012 at 15:30 |
| Ravensbourne | Catford Hill | 0.10 m (Low) | 0.07 | 1.48 | Falling | 20th May 2012 at 15:30 |
| Ravensbourne | Hayes Lane | 0.15 m (Low) | 0.00 | 1.50 | Falling | 20th May 2012 at 15:30 |
| Ravensbourne | Magpie Hall Lane | 0.92 m (Low) | 0.92 | 1.40 | Rising | 20th May 2012 at 15:30 |
| Ravensbourne | Bishops Avenue | 0.64 m (Low) | 0.43 | 1.50 | Rising | 20th May 2012 at 15:30 |
| Ravensbourne | Bromley South | 0.06 m (Low) | 0.05 | 1.20 | Falling | 20th May 2012 at 15:30 |
| Ravensbourne | Beckenham Park | 0.54 m (Low) | 0.47 | 1.58 | Rising | 20th May 2012 at 15:30 |
| Ravensbourne | Catford Hill | 0.10 m (Low) | 0.07 | 1.48 | Falling | 20th May 2012 at 15:30 |
| Ravensbourne | Hayes Lane | 0.15 m (Low) | 0.00 | 1.50 | Falling | 20th May 2012 at 15:30 |
| Ray (Wilts) | Rushey Platt | 0.84 m (Low/Medium) | 0.74 | 1.00 | Rising | 20th May 2012 at 09:00 |
| Ray (Wilts) | Rodbourne | 0.19 m (Low/Medium) | 0.03 | 0.53 | Falling | 20th May 2012 at 15:45 |
| Ray (Wilts) | Water Eaton | 1.25 m (Low/Medium) | 0.63 | 1.90 | Rising | 20th May 2012 at 09:00 |
| Ray(Oxon) | Grendon Underwood | 0.09 m (Low) | 0.01 | 0.38 | Falling | 20th May 2012 at 15:45 |
| Ray(Oxon) | Lower Arncott | 0.84 m (Low/Medium) | 0.30 | 2.07 | Rising | 20th May 2012 at 15:45 |
| Rea Brook | Hookagate | 0.36 m (Low) | 0.15 | 1.10 | Rising | 20th May 2012 at 18:00 |
| Red - Upstream | Redbourn River Red | 0.00 m (Low/Medium) | -0.20 | 0.60 | Falling | 30th November -0001 at 00:00 |
| Redhill Brook | Redhill | 0.53 m (Low) | 0.49 | 2.00 | Rising | 20th May 2012 at 15:30 |
| Rheidol | Cwm Rheidol | 0.44 m (Low) | 0.28 | 0.98 | Rising | 20th May 2012 at 16:45 |
| Rhondda | Tynewydd | 0.17 m (Low) | 0.12 | 0.45 | Falling | 20th May 2012 at 16:45 |
| Rhondda | Trehafod | 0.28 m (Low) | 0.16 | 0.78 | Falling | 20th May 2012 at 16:45 |
| Rhondda | Hopkinstown | 0.51 m (Low) | 0.31 | 1.13 | Rising | 20th May 2012 at 16:45 |
| Rhondda | Gelli | 0.16 m (Low/Medium) | 0.00 | 0.52 | Falling | 20th May 2012 at 16:45 |
| Rhondda Fach | Maerdy | 0.17 m (Low/Medium) | 0.03 | 0.35 | Falling | 20th May 2012 at 16:45 |
| Rhymney | New Tredegar | 0.18 m (Low) | 0.06 | 0.57 | Falling | 20th May 2012 at 16:45 |
| Rhymney | Waterloo Bridge, Machen | 0.00 m (Very High) | 0.00 | 0.00 | Falling | 30th November -0001 at 00:00 |
| Rib | Buntingford | 0.07 m (Low) | 0.06 | 1.60 | Falling | 20th May 2012 at 09:00 |
| Rib | Wadesmill | 0.24 m (Low) | 0.13 | 1.60 | Falling | 20th May 2012 at 09:00 |
| Ribble | Gisburn | 0.14 m (Low) | 0.10 | 0.87 | Falling | 20th May 2012 at 15:00 |
| Ribble | Henthorn | 0.52 m (Low) | 0.33 | 2.50 | Rising | 20th May 2012 at 15:00 |
| Ribble | Locks Weir | 0.24 m (Low) | 0.11 | 1.25 | Falling | 20th May 2012 at 15:00 |
| Ribble | Low Moor | 0.51 m (Low) | 0.20 | 3.80 | Rising | 20th May 2012 at 15:00 |
| Ribble | New Jumbles Rock | 0.41 m (Low) | 0.26 | 2.50 | Rising | 20th May 2012 at 15:00 |
| Ribble | Penny Bridge | 0.38 m (Low) | 0.09 | 1.80 | Rising | 20th May 2012 at 15:00 |
| Ribble | Samlesbury | 1.08 m (Very Low) | 1.14 | 4.25 | Rising | 20th May 2012 at 15:00 |
| Ribble | Walton-Le-Dale | 0.24 m (Low) | 0.15 | 3.00 | Falling | 20th May 2012 at 15:00 |
| Ripple Brook | Shuthonger | 0.92 m (Low) | 0.58 | 1.99 | Rising | 20th May 2012 at 18:00 |
| Ritec | Kiln Park | 0.47 m (Low/Medium) | 0.22 | 1.06 | Rising | 20th May 2012 at 16:45 |
| River Aire | Airmyn | 0.00 m (Very High) | 0.00 | 0.00 | Falling | 20th May 2012 at 05:15 |
| River Aire | Armley | 0.48 m (Low) | 0.29 | 2.12 | Rising | 20th May 2012 at 18:00 |
| River Aire | Beal Weir Bridge | 0.51 m (Low) | 0.32 | 3.55 | Rising | 20th May 2012 at 18:00 |
| River Aire | Carlton Bridge | 0.01 m (Low) | 0.00 | 4.50 | Rising | 20th May 2012 at 18:00 |
| River Aire | Castleford | 1.20 m (Low) | 1.02 | 2.00 | Rising | 20th May 2012 at 18:00 |
| River Aire | Cononley | 0.00 m (Low) | 0.00 | 1.40 | Falling | 30th November -0001 at 00:00 |
| River Aire | Cottingley Bridge | 0.40 m (Low) | 0.28 | 1.70 | Rising | 20th May 2012 at 18:00 |
| River Aire | Leeds Crown Point | 0.57 m (Low) | 0.53 | 1.35 | Rising | 20th May 2012 at 18:00 |
| River Aire | Ferrybridge Lock | 0.25 m (Low) | 0.16 | 2.10 | Falling | 20th May 2012 at 18:00 |
| River Aire | Fleet Weir | 0.30 m (Low) | 0.18 | 1.80 | Falling | 20th May 2012 at 18:00 |
| River Aire | Gargrave | 0.19 m (Low) | 0.13 | 0.60 | Falling | 20th May 2012 at 18:00 |
| River Aire | Kildwick | 0.37 m (Low) | 0.19 | 1.45 | Rising | 20th May 2012 at 18:00 |
| River Aire | Kirkstall Abbey | 1.50 m (Low) | 1.44 | 1.90 | Rising | 20th May 2012 at 18:00 |
| River Aire | Knottingley Lock | 0.65 m (Low) | 0.43 | 4.50 | Rising | 20th May 2012 at 18:00 |
| River Aire | Snaygill | 0.32 m (Low) | 0.04 | 4.00 | Falling | 20th May 2012 at 18:00 |
| River Aire | Stockbridge | 0.07 m (Low) | 0.00 | 1.80 | Falling | 20th May 2012 at 18:00 |
| River Alde | Farnham | 0.15 m (Low/Medium) | 0.10 | 0.27 | Falling | 20th May 2012 at 03:45 |
| River Allen | Penvose | 0.25 m (Medium) | 0.05 | 0.36 | Falling | 20th May 2012 at 04:00 |
| River Allen | Walford Mill | 0.35 m (Medium) | 0.09 | 0.56 | Unchanged | 20th May 2012 at 04:00 |
| River Allen | Loverley Mill | 0.39 m (Medium) | 0.12 | 0.54 | Rising | 20th May 2012 at 04:00 |
| River Allen (downstream) | Idless Dam | 0.12 m (Low) | 0.05 | 0.33 | Falling | 20th May 2012 at 04:15 |
| River Aller | Allerford | 0.50 m (Low) | 0.46 | 1.10 | Rising | 20th May 2012 at 06:00 |
| River Alne | Little Alne | 0.92 m (Low) | 0.90 | 1.33 | Rising | 20th May 2012 at 18:00 |
| River Alne | Henley River | 0.45 m (Low/Medium) | 0.39 | 0.55 | Rising | 20th May 2012 at 18:00 |
| River Amber | Wingfield Park | 0.31 m (Low) | 0.22 | 0.71 | Falling | 20th May 2012 at 18:00 |
| River Anker | Polesworth | 0.21 m (Low) | 0.12 | 0.70 | Falling | 20th May 2012 at 18:00 |
| River Ant | Barton Broad | 0.06 m (Very Low) | 0.25 | 0.75 | Falling | 20th May 2012 at 03:45 |
| River Arrow | Studley | 0.61 m (Low/Medium) | 0.51 | 0.81 | Rising | 20th May 2012 at 18:00 |
| River Arrow | Broom | 0.17 m (Low) | 0.12 | 0.49 | Falling | 20th May 2012 at 18:00 |
| River Ashburn | Ashburton Upper | 1.20 m (Medium) | 1.03 | 1.36 | Rising | 20th May 2012 at 06:00 |
| River Asker | East Bridge Bridport | 0.17 m (Low) | 0.14 | 0.32 | Falling | 20th May 2012 at 04:00 |
| River Asker | Jessops Avenue Bridport | 0.08 m (Low) | 0.00 | 0.79 | Falling | 20th May 2012 at 06:15 |
| River Avon | Didworthy | 0.30 m (Low/Medium) | 0.00 | 0.68 | Falling | 20th May 2012 at 04:00 |
| River Avon | Loddiswell | 0.49 m (Low/Medium) | 0.25 | 0.89 | Rising | 20th May 2012 at 04:00 |
| River Avon | Ashton Vale | 0.95 m (Low) | 0.92 | 1.19 | Rising | 20th May 2012 at 04:00 |
| River Avon | Bradford on Avon | 1.20 m (Low/Medium) | 1.01 | 1.40 | Rising | 20th May 2012 at 04:15 |
| River Avon | Great Somerford | 0.46 m (Medium) | 0.16 | 0.75 | Rising | 20th May 2012 at 04:00 |
| River Avon | Netham Weir | 0.36 m (Very High) | 0.00 | 0.00 | Rising | 20th May 2012 at 04:00 |
| River Avon | Bathford | 1.02 m (Low) | 0.63 | 2.50 | Rising | 20th May 2012 at 04:00 |
| River Avon | Saltford | 0.61 m (Low) | 0.47 | 1.44 | Rising | 20th May 2012 at 04:15 |
| River Avon | Knapp Mill | 0.36 m (Low/Medium) | 0.25 | 0.66 | Rising | 20th May 2012 at 09:00 |
| River Avon | Amesbury | 0.31 m (Low/Medium) | 0.15 | 0.75 | Falling | 20th May 2012 at 09:00 |
| River Avon | East Mills Weir | 0.64 m (Low/Medium) | 0.39 | 1.08 | Rising | 20th May 2012 at 04:00 |
| River Avon | East Mills Flume | 0.94 m (Low/Medium) | 0.60 | 1.60 | Rising | 20th May 2012 at 09:00 |
| River Avon | Upavon West | 0.15 m (Low) | 0.06 | 0.82 | Falling | 20th May 2012 at 09:00 |
| River Avon | Upavon East | 0.21 m (Low) | 0.17 | 0.70 | Falling | 20th May 2012 at 09:00 |
| River Avon | Evesham | 0.58 m (Low) | 0.46 | 1.90 | Rising | 20th May 2012 at 18:00 |
| River Avon | Lilbourne | 0.14 m (Low) | 0.10 | 0.66 | Falling | 20th May 2012 at 18:00 |
| River Avon | Rugby | 0.59 m (Medium) | 0.04 | 1.08 | Rising | 16th May 2012 at 09:45 |
| River Avon | Warwick | 1.18 m (Medium) | 0.40 | 1.46 | Rising | 20th May 2012 at 18:00 |
| River Avon | Stratford | 0.60 m (Low) | 0.50 | 0.93 | Rising | 20th May 2012 at 18:00 |
| River Avon | Pershore | 3.44 m (Low/Medium) | 3.36 | 3.61 | Rising | 20th May 2012 at 18:00 |
| River Avon | Bredon | 0.77 m (Low) | 0.65 | 2.08 | Rising | 20th May 2012 at 18:00 |
| River Axe | Whitford Bridge | 0.30 m (Low) | 0.20 | 0.94 | Falling | 20th May 2012 at 06:00 |
| River Axe | Weycroft Bridge | 0.53 m (Low) | 0.37 | 1.07 | Rising | 20th May 2012 at 04:00 |
| River Axe | Forde Abbey | 0.43 m (Low) | 0.34 | 1.81 | Rising | 20th May 2012 at 04:15 |
| River Axe | Winsham | 0.92 m (Low) | 0.81 | 1.27 | Rising | 20th May 2012 at 09:00 |
| River Axe | Wookey | 0.58 m (Medium) | 0.41 | 0.74 | Rising | 20th May 2012 at 04:00 |
| River Bain | Kirkby On Bain | 0.14 m (Low) | 0.00 | 1.10 | Falling | 20th May 2012 at 04:15 |
| River Banwy | Llanerfyl | 1.22 m (Low/Medium) | 1.02 | 1.66 | Rising | 20th May 2012 at 16:45 |
| River Barle | Simonsbath | 0.12 m (Low/Medium) | 0.02 | 0.42 | Falling | 20th May 2012 at 09:00 |
| River Barle | Brushford | 0.38 m (Low/Medium) | 0.18 | 0.84 | Rising | 20th May 2012 at 04:00 |
| River Batherm | Bampton | 0.32 m (Low/Medium) | 0.13 | 0.79 | Falling | 20th May 2012 at 09:00 |
| River Batherm | Bampton Bridge | 0.20 m (Low) | 0.02 | 1.40 | Falling | 20th May 2012 at 04:15 |
| River Bela | Beetham Weir | 0.34 m (Low/Medium) | 0.20 | 0.67 | Unchanged | 20th May 2012 at 15:00 |
| River Biss | Trowbridge | 0.27 m (Low) | 0.16 | 1.80 | Falling | 20th May 2012 at 04:15 |
| River Blackwater | Stisted | 0.15 m (Low) | 0.09 | 1.22 | Falling | 20th May 2012 at 06:30 |
| River Blackwater | Appleford Bridge | 0.24 m (Low) | 0.13 | 1.10 | Falling | 20th May 2012 at 04:15 |
| River Blythe | Castle Farm | 0.67 m (Low) | 0.62 | 1.28 | Rising | 20th May 2012 at 18:00 |
| River Blythe | Cheswick Green | 0.29 m (Low/Medium) | 0.19 | 0.55 | Falling | 20th May 2012 at 18:00 |
| River Bourne | Salisbury Bourne | 0.75 m (Medium) | 0.20 | 1.22 | Rising | 20th May 2012 at 04:00 |
| River Bourne | Idmiston | 0.05 m (Low) | 0.00 | 0.65 | Falling | 20th May 2012 at 04:00 |
| River Bourne | Laverstock | 0.19 m (Low) | 0.10 | 0.57 | Falling | 20th May 2012 at 04:00 |
| River Bovey | North Bovey | 0.25 m (Medium) | 0.07 | 0.42 | Falling | 20th May 2012 at 04:00 |
| River Bovey | Bovey Parke | 0.57 m (Low/Medium) | 0.42 | 0.78 | Rising | 20th May 2012 at 04:15 |
| River Box | Boxford | 0.09 m (Low) | 0.07 | 0.65 | Falling | 20th May 2012 at 18:00 |
| River Box | Polstead | 0.11 m (Low) | 0.10 | 0.66 | Falling | 20th May 2012 at 04:15 |
| River Boyd | Wick | 0.22 m (Low) | 0.05 | 0.90 | Falling | 20th May 2012 at 04:00 |
| River Boyd | Bitton | 0.21 m (Low/Medium) | 0.10 | 0.44 | Falling | 20th May 2012 at 04:00 |
| River Brain | Guithavon Valley | 0.11 m (Low) | 0.04 | 0.52 | Falling | 20th May 2012 at 04:15 |
| River Bray | Newtown Bridge | 0.12 m (Very Low) | 0.20 | 0.77 | Falling | 20th May 2012 at 04:00 |
| River Brett | Cockfield | 0.09 m (Low) | 0.02 | 0.72 | Falling | 20th May 2012 at 16:15 |
| River Brett | Hadleigh | 0.22 m (Very Low) | 0.30 | 0.85 | Falling | 20th May 2012 at 04:15 |
| River Bride | Burton Bradstock | 0.22 m (Low) | 0.14 | 1.00 | Falling | 20th May 2012 at 04:00 |
| River Brit | Beaminster | 0.24 m (Low) | 0.20 | 0.83 | Falling | 20th May 2012 at 04:00 |
| River Brit | Netherbury | 0.53 m (Low) | 0.00 | 2.30 | Rising | 20th May 2012 at 04:15 |
| River Browney | Burn Hall | 0.27 m (Low) | 0.08 | 1.30 | Falling | 20th May 2012 at 18:15 |
| River Brue | Bruton Surgery | 0.25 m (Low) | 0.20 | 0.72 | Falling | 20th May 2012 at 04:00 |
| River Brue | Bruton Dam | 0.75 m (Low/Medium) | 0.40 | 1.51 | Rising | 20th May 2012 at 09:00 |
| River Brue | Lovington | 0.19 m (Low) | 0.08 | 1.90 | Falling | 20th May 2012 at 20:45 |
| River Brue | Clyse Hole | 0.27 m (Low) | 0.19 | 0.80 | Falling | 20th May 2012 at 04:15 |
| River Bure | Corpusty | 0.07 m (Low) | 0.03 | 0.23 | Falling | 20th May 2012 at 06:30 |
| River Bure | Ingworth | 0.25 m (Low) | 0.19 | 0.66 | Falling | 20th May 2012 at 06:30 |
| River Bure | 3 Mile House | 0.42 m (Low/Medium) | -0.30 | 1.50 | Rising | 20th May 2012 at 06:30 |
| River Bure | Acle Bridge | 0.39 m (Low/Medium) | 0.14 | 0.93 | Falling | 20th May 2012 at 06:30 |
| River Bure | Hickling Broad | 0.34 m (Low/Medium) | 0.00 | 0.77 | Falling | 20th May 2012 at 04:15 |
| River Bure | Ranworth Broad | 0.35 m (Low) | 0.20 | 0.94 | Falling | 20th May 2012 at 03:45 |
| River Burn | South Creake | 0.08 m (Low) | 0.06 | 0.20 | Falling | 20th May 2012 at 04:15 |
| River Caen | Stoneybridge | 0.04 m (Low) | 0.00 | 0.70 | Falling | 20th May 2012 at 04:00 |
| River Caen | Stoneybridge | 0.04 m (Low) | 0.00 | 0.70 | Falling | 20th May 2012 at 04:00 |
| River Caen | Braunton Butts Bridge | 0.58 m (Low) | 0.44 | 1.21 | Rising | 20th May 2012 at 04:15 |
| River Caen (Tidal) | Braunton | 0.00 m (Very High) | 0.00 | 0.00 | Falling | 20th May 2012 at 06:00 |
| River Calder | Brighouse Brookfoot | 0.02 m (Low) | 0.00 | 0.80 | Falling | 20th May 2012 at 18:00 |
| River Calder | Mytholmroyd | 0.66 m (Low) | 0.43 | 2.10 | Rising | 20th May 2012 at 18:00 |
| River Calder | Dewsbury | 0.67 m (Low) | 0.48 | 2.70 | Rising | 20th May 2012 at 18:00 |
| River Calder | Elland | 0.49 m (Low) | 0.35 | 1.49 | Rising | 20th May 2012 at 18:00 |
| River Calder | Hebden Bridge | 0.02 m (Low) | 0.00 | 0.75 | Falling | 20th May 2012 at 18:00 |
| River Calder | Horbury | 0.40 m (Low) | 0.18 | 2.30 | Rising | 20th May 2012 at 18:00 |
| River Calder | Ledgard Bridge | 0.11 m (Low) | 0.00 | 2.50 | Falling | 20th May 2012 at 18:00 |
| River Calder | Methley | 1.25 m (Low) | 1.10 | 3.00 | Rising | 20th May 2012 at 18:00 |
| River Calder | Sowerby Bridge | 0.01 m (Low) | 0.00 | 1.40 | Falling | 20th May 2012 at 18:00 |
| River Calder | Todmorden | 0.15 m (Low) | 0.10 | 1.14 | Falling | 20th May 2012 at 18:00 |
| River Calder | Walsden | 0.07 m (Low) | 0.03 | 0.38 | Falling | 20th May 2012 at 18:00 |
| River Calder | Heaton Lodge | 0.30 m (Low) | 0.20 | 1.20 | Falling | 20th May 2012 at 18:00 |
| River Cale | Wincanton | 0.07 m (Low) | 0.01 | 0.27 | Falling | 20th May 2012 at 04:15 |
| River Cam | Weston Bampfylde | 0.17 m (Low/Medium) | 0.02 | 0.60 | Falling | 20th May 2012 at 04:00 |
| River Cam | Hallatrow | 0.00 m (Low) | 0.00 | 0.13 | Falling | 30th November -0001 at 00:00 |
| River Cam | Great Chesterford | 0.16 m (Low/Medium) | 0.10 | 0.32 | Falling | 20th May 2012 at 06:30 |
| River Cam | Dernford | 0.15 m (Low/Medium) | 0.08 | 0.34 | Falling | 20th May 2012 at 06:00 |
| River Cam | Cambridge Jesus Lock | 0.23 m (Low) | 0.12 | 0.68 | Falling | 20th May 2012 at 19:30 |
| River Cam | Cambridge Baits Bite | 0.35 m (Low/Medium) | 0.32 | 0.40 | Falling | 20th May 2012 at 19:30 |
| River Cam | Bottisham | 0.08 m (Low) | 0.04 | 0.57 | Falling | 20th May 2012 at 19:30 |
| River Cam | Cam | 0.66 m (Low/Medium) | 0.58 | 0.78 | Rising | 20th May 2012 at 18:00 |
| River Cam | Cambridge | 0.23 m (Low) | 0.14 | 1.26 | Falling | 20th May 2012 at 18:00 |
| River Camel | Sladesbridge | 0.11 m (Low) | 0.06 | 0.66 | Falling | 20th May 2012 at 06:00 |
| River Camel | Denby | 0.65 m (Low/Medium) | 0.44 | 1.15 | Rising | 20th May 2012 at 04:15 |
| River Camel | Slaughterbridge | 0.42 m (Low/Medium) | 0.34 | 0.59 | Rising | 20th May 2012 at 09:00 |
| River Can | Beaches Mill | 0.26 m (Low) | 0.14 | 1.49 | Falling | 20th May 2012 at 04:15 |
| River Char | Charmouth | 0.18 m (Low) | 0.11 | 1.50 | Falling | 20th May 2012 at 04:15 |
| River Chelmer | Churchend | 0.18 m (Low) | 0.08 | 1.24 | Falling | 20th May 2012 at 06:30 |
| River Chelmer | Felsted | 0.13 m (Low) | 0.05 | 1.04 | Falling | 20th May 2012 at 04:15 |
| River Chelmer | Springfield | 0.13 m (Low) | 0.06 | 0.69 | Falling | 20th May 2012 at 06:30 |
| River Churnet | Basford Bridge | 0.34 m (Low) | 0.26 | 1.08 | Falling | 20th May 2012 at 18:00 |
| River Churnet | Quixhill | 0.31 m (Low) | 0.26 | 0.79 | Falling | 20th May 2012 at 18:00 |
| River Churnet | Leek | 0.19 m (Low) | 0.18 | 0.51 | Falling | 20th May 2012 at 18:00 |
| River Clyst | Ashclyst | 0.16 m (Low) | 0.08 | 0.68 | Falling | 20th May 2012 at 09:00 |
| River Clyst | Clyst Honiton | 0.67 m (Low) | 0.61 | 1.36 | Rising | 20th May 2012 at 04:00 |
| River Clywedog | Bryntail | 0.29 m (Low/Medium) | 0.14 | 0.67 | Falling | 20th May 2012 at 18:00 |
| River Cober | Loe Pool | 3.70 m (Low/Medium) | 3.40 | 4.23 | Rising | 20th May 2012 at 04:00 |
| River Cober | Boscadjack | 0.42 m (Medium) | 0.13 | 0.64 | Rising | 20th May 2012 at 04:00 |
| River Cole | Bacons End | 0.19 m (Low) | 0.13 | 0.39 | Falling | 20th May 2012 at 18:00 |
| River Cole | Solihull Lodge | 0.23 m (Low/Medium) | 0.16 | 0.42 | Falling | 20th May 2012 at 18:00 |
| River Colne | Pool Street | 0.14 m (Low) | 0.04 | 1.43 | Falling | 20th May 2012 at 06:30 |
| River Colne | Earls Colne | 0.14 m (Low) | 0.04 | 1.04 | Falling | 20th May 2012 at 04:15 |
| River Colne | Lexden | 0.29 m (Low) | 0.10 | 1.42 | Falling | 20th May 2012 at 04:15 |
| River Colne | Colne Bridge | 0.47 m (Low/Medium) | 0.22 | 1.00 | Rising | 20th May 2012 at 18:00 |
| River Coly | Bonehayne | 0.15 m (Very Low) | 0.19 | 0.51 | Falling | 20th May 2012 at 09:00 |
| River Coquet | Alwinton Bridge | 0.37 m (Low) | 0.22 | 1.40 | Rising | 20th May 2012 at 18:30 |
| River Coquet | Morwick | 0.53 m (Low) | 0.27 | 2.60 | Rising | 20th May 2012 at 18:30 |
| River Coquet | Rothbury | 0.52 m (Low) | 0.26 | 1.60 | Rising | 20th May 2012 at 18:30 |
| River Creedy | Upton Hellions | 0.32 m (Low) | 0.18 | 0.96 | Falling | 20th May 2012 at 04:00 |
| River Creedy | Cowley Bridge | 0.36 m (Low/Medium) | 0.13 | 0.88 | Rising | 20th May 2012 at 04:00 |
| River Crimple | Blackstones Farm | 0.24 m (Low/Medium) | 0.15 | 0.47 | Falling | 20th May 2012 at 18:15 |
| River Culm | Woodmill | 0.29 m (Low) | 0.25 | 0.77 | Falling | 20th May 2012 at 04:00 |
| River Culm | Rewe | 0.33 m (Low) | 0.24 | 1.15 | Falling | 20th May 2012 at 04:00 |
| River Dart | Austins Bridge | 0.57 m (Low/Medium) | 0.29 | 1.05 | Rising | 20th May 2012 at 09:00 |
| River Dearne | Adwick | 0.38 m (Low) | 0.21 | 1.92 | Rising | 20th May 2012 at 18:00 |
| River Dearne | Barnsley | 0.26 m (Low) | 0.14 | 1.00 | Falling | 20th May 2012 at 18:00 |
| River Dearne | Bolton Bridge | 0.47 m (Low) | 0.35 | 2.00 | Rising | 20th May 2012 at 18:00 |
| River Dearne | Cundy Cross | 0.17 m (Low) | 0.12 | 2.20 | Falling | 20th May 2012 at 18:00 |
| River Dearne | Darfield Bridge | 0.39 m (Low) | 0.33 | 3.06 | Rising | 20th May 2012 at 18:00 |
| River Dearne | Houghton | 0.21 m (Low) | 0.11 | 1.25 | Falling | 20th May 2012 at 18:00 |
| River Deben | Debenham | 0.44 m (Low) | 0.16 | 2.59 | Rising | 20th May 2012 at 09:00 |
| River Dene | Wellesbourne | 0.18 m (Low/Medium) | 0.09 | 0.36 | Falling | 20th May 2012 at 18:00 |
| River Derwent | Yorkshire Bridge | 0.35 m (Low) | 0.30 | 0.82 | Unchanged | 20th May 2012 at 18:00 |
| River Derwent | Matlock | 0.72 m (Low/Medium) | 0.29 | 1.31 | Rising | 20th May 2012 at 18:00 |
| River Derwent | Chatsworth | 1.16 m (Low) | 1.04 | 1.55 | Rising | 20th May 2012 at 18:00 |
| River Derwent | Derby City | 0.72 m (Low/Medium) | 0.58 | 1.11 | Rising | 20th May 2012 at 20:00 |
| River Derwent | Portinscale | 0.53 m (Low) | 0.31 | 1.33 | Rising | 20th May 2012 at 15:00 |
| River Derwent | Bubwith Bridge | 2.98 m (Low/Medium) | 1.98 | 5.50 | Rising | 20th May 2012 at 18:00 |
| River Derwent | Buttercrambe | 0.60 m (Low/Medium) | 0.28 | 1.30 | Rising | 20th May 2012 at 18:00 |
| River Derwent | Elvington Sluices | 5.55 m (Low) | 5.47 | 6.25 | Rising | 20th May 2012 at 18:00 |
| River Derwent | Malton | 1.26 m (Low/Medium) | 0.54 | 2.95 | Rising | 20th May 2012 at 18:00 |
| River Derwent | Malton, A64 Road Bridge | 1.17 m (Low/Medium) | 0.34 | 3.10 | Rising | 20th May 2012 at 18:00 |
| River Derwent | Low Marishes | 1.75 m (Low/Medium) | 1.01 | 3.58 | Rising | 20th May 2012 at 18:00 |
| River Derwent | West Ayton | 0.32 m (Medium/High) | 0.06 | 0.38 | Falling | 20th May 2012 at 18:00 |
| River Doe Lea | Staveley | 0.20 m (Low) | 0.10 | 1.43 | Falling | 20th May 2012 at 18:00 |
| River Don | Doncaster | 0.46 m (Low) | 0.21 | 3.05 | Rising | 20th May 2012 at 18:00 |
| River Don | Hadfields | 0.41 m (Low) | 0.36 | 0.90 | Rising | 20th May 2012 at 18:00 |
| River Don | Mexborough Lock | 0.81 m (Low) | 0.68 | 2.40 | Rising | 20th May 2012 at 18:00 |
| River Don | Rotherham | 0.17 m (Low) | 0.07 | 1.80 | Falling | 20th May 2012 at 18:00 |
| River Don | Rotherham Tesco | 0.29 m (Low) | 0.23 | 1.70 | Falling | 20th May 2012 at 18:00 |
| River Dove | Rocester | 0.27 m (Low) | 0.17 | 0.66 | Falling | 20th May 2012 at 18:00 |
| River Dove | Marston on Dove | 0.64 m (Low) | 0.49 | 1.75 | Rising | 20th May 2012 at 21:00 |
| River Dove | Izaak Walton | 0.42 m (Low/Medium) | 0.27 | 0.59 | Rising | 20th May 2012 at 18:00 |
| River Dove | Doveridge | 0.81 m (Low) | 0.67 | 1.41 | Rising | 20th May 2012 at 18:00 |
| River Dove | Aston Bridge | 0.71 m (Low/Medium) | 0.38 | 1.56 | Rising | 20th May 2012 at 18:00 |
| River Dove (North Yorkshire) | Kirkby Mills | 0.33 m (Low/Medium) | 0.20 | 0.52 | Unchanged | 20th May 2012 at 18:00 |
| River Drone | Dronfield | 0.02 m (Low) | 0.00 | 0.50 | Falling | 20th May 2012 at 18:00 |
| River Dulas | Rhos Y Pentref | 0.37 m (Low/Medium) | 0.12 | 0.95 | Rising | 20th May 2012 at 16:45 |
| River Eamont | Pooley Bridge | 0.50 m (Low/Medium) | 0.15 | 0.92 | Rising | 20th May 2012 at 15:00 |
| River East Allen | Allen Mill Bridge | 0.26 m (Low) | 0.16 | 1.30 | Falling | 20th May 2012 at 18:30 |
| River Ebble | Nunton Bridge | 0.96 m (Medium/High) | 0.48 | 1.06 | Rising | 20th May 2012 at 04:00 |
| River Ecclesbourne | Duffield | 0.22 m (Low/Medium) | 0.14 | 0.43 | Falling | 20th May 2012 at 18:00 |
| River Erewash | Pinxton | 0.11 m (Low) | 0.07 | 0.23 | Falling | 20th May 2012 at 18:00 |
| River Erewash | Shipley Gate | 1.05 m (Low) | 0.96 | 1.62 | Rising | 20th May 2012 at 18:00 |
| River Erewash | Sandiacre | 0.20 m (Low) | 0.13 | 0.50 | Falling | 20th May 2012 at 18:00 |
| River Erme | Harford | 0.35 m (Low) | 0.24 | 0.77 | Unchanged | 20th May 2012 at 04:00 |
| River Erme | Ermington | 0.31 m (Low/Medium) | 0.18 | 0.60 | Falling | 20th May 2012 at 06:00 |
| River Esk | Lealholm | 0.20 m (Low) | 0.07 | 1.50 | Falling | 20th May 2012 at 18:15 |
| River Esk | Briggswath | 0.65 m (Low/Medium) | 0.36 | 0.95 | Rising | 20th May 2012 at 18:15 |
| River Exe | Exford | 0.37 m (Low) | 0.28 | 0.68 | Rising | 20th May 2012 at 04:00 |
| River Exe | Pixton | 0.27 m (Low/Medium) | 0.12 | 0.69 | Falling | 20th May 2012 at 04:00 |
| River Exe | Stoodleigh | 1.20 m (Low/Medium) | 0.93 | 1.91 | Rising | 20th May 2012 at 05:00 |
| River Exe | Tiverton | 0.48 m (Low/Medium) | 0.10 | 1.41 | Rising | 20th May 2012 at 09:00 |
| River Exe | Thorverton | 0.45 m (Low/Medium) | 0.23 | 0.94 | Rising | 20th May 2012 at 06:00 |
| River Exe | Trews Weir | 3.39 m (Low) | 3.28 | 3.83 | Rising | 20th May 2012 at 04:00 |
| River Fal | Tregony | 0.56 m (Low/Medium) | 0.25 | 1.08 | Rising | 20th May 2012 at 04:00 |
| River Fal | Trenowth | 0.31 m (Low/Medium) | 0.17 | 0.67 | Falling | 20th May 2012 at 04:00 |
| River Flit | Shefford | 0.29 m (Low/Medium) | 0.21 | 0.48 | Falling | 20th May 2012 at 06:30 |
| River Font | Nunnykirk | 0.34 m (Low) | 0.30 | 1.63 | Unchanged | 20th May 2012 at 18:30 |
| River Foss | Huntington | 0.79 m (Low) | 0.68 | 2.05 | Rising | 20th May 2012 at 18:15 |
| River Fowey | Restormel | 0.34 m (Low) | 0.24 | 0.65 | Falling | 20th May 2012 at 06:15 |
| River Fowey | Wainsford | 0.44 m (Low/Medium) | 0.30 | 0.86 | Rising | 20th May 2012 at 04:00 |
| River Fowey | Trekeivesteps | 0.38 m (Low/Medium) | 0.27 | 0.61 | Rising | 20th May 2012 at 04:00 |
| River Frome | Stinsford | 0.32 m (Medium) | 0.10 | 0.50 | Falling | 20th May 2012 at 04:00 |
| River Frome | East Stoke | 0.99 m (Low/Medium) | 0.57 | 1.42 | Rising | 20th May 2012 at 09:00 |
| River Frome | Maiden Newton | 0.18 m (Very Low) | 0.38 | 1.35 | Falling | 20th May 2012 at 04:15 |
| River Frome | Louds Mill | 0.20 m (Low/Medium) | 0.09 | 0.41 | Falling | 20th May 2012 at 04:00 |
| River Frome | Ebley Mill | 0.53 m (Very High) | 0.13 | 0.51 | Rising | 20th May 2012 at 18:00 |
| River Fromus | Saxmundham | 0.29 m (Low) | 0.00 | 1.76 | Falling | 20th May 2012 at 04:15 |
| River Gannel | Gwills | 0.13 m (Low/Medium) | 0.04 | 0.26 | Falling | 20th May 2012 at 09:00 |
| River Gaunless | Copley | 0.16 m (Low/Medium) | 0.00 | 0.40 | Falling | 20th May 2012 at 18:15 |
| River Gaunless | Dovecote Hill | 0.58 m (Low) | 0.47 | 2.00 | Rising | 20th May 2012 at 18:15 |
| River Gaunless | Lowlands | 0.12 m (Low) | 0.05 | 0.55 | Falling | 20th May 2012 at 18:15 |
| River Gaunless | Spring Gardens Dam | 0.71 m (Low/Medium) | 0.37 | 1.63 | Rising | 20th May 2012 at 18:15 |
| River Gaunless | South Church | 0.22 m (Low) | 0.08 | 1.31 | Falling | 20th May 2012 at 18:15 |
| River Gipping | Stowmarket | 0.16 m (Low) | 0.13 | 0.92 | Falling | 20th May 2012 at 06:30 |
| River Glem | Glemsford | 0.12 m (Low) | 0.06 | 0.99 | Falling | 20th May 2012 at 04:15 |
| River Glen | Surfleet Sluice | 3.68 m (Medium/High) | 2.97 | 3.72 | Rising | 20th May 2012 at 06:00 |
| River Glen | Kates Bridge | 0.15 m (Low) | 0.06 | 0.72 | Falling | 20th May 2012 at 06:00 |
| River Granta | Linton | 0.06 m (Low) | 0.03 | 0.28 | Falling | 20th May 2012 at 03:45 |
| River Granta | Babraham | 0.09 m (Low) | 0.05 | 0.24 | Falling | 20th May 2012 at 03:45 |
| River Greta | Keswick Campsite | 0.48 m (Low/Medium) | 0.17 | 1.31 | Rising | 20th May 2012 at 15:00 |
| River Greta | Rutherford Bridge | 0.31 m (Low) | 0.07 | 1.30 | Unchanged | 20th May 2012 at 18:15 |
| River Gypsey Race | Boynton | 0.06 m (Low) | 0.00 | 0.60 | Falling | 20th May 2012 at 18:00 |
| River Hamps | Waterhouses | 0.21 m (Low/Medium) | 0.12 | 0.47 | Falling | 20th May 2012 at 18:00 |
| River Harbourne | Rolster Bridge | 0.16 m (Low/Medium) | 0.02 | 0.50 | Falling | 20th May 2012 at 09:00 |
| River Harbourne | Palmers Dam | 0.78 m (Low) | 0.65 | 1.18 | Rising | 20th May 2012 at 06:00 |
| River Harbourne | Harbertonford | 0.11 m (Low/Medium) | 0.00 | 0.37 | Falling | 20th May 2012 at 09:00 |
| River Hayle | St Erth | 0.39 m (Low/Medium) | 0.24 | 0.59 | Rising | 20th May 2012 at 04:00 |
| River Hayle | Relubbus | 0.25 m (Low/Medium) | 0.09 | 0.52 | Falling | 20th May 2012 at 04:00 |
| River Hipper | Chesterfield | 0.39 m (Low) | 0.36 | 0.90 | Rising | 20th May 2012 at 18:00 |
| River Hiz | Arlesey | 0.11 m (Low) | 0.08 | 0.21 | Falling | 20th May 2012 at 06:30 |
| River Holme | Queen's Mill | 0.39 m (Low) | 0.25 | 1.20 | Rising | 20th May 2012 at 18:00 |
| River Hooke | Hooke | 0.16 m (Low) | 0.12 | 0.46 | Falling | 20th May 2012 at 04:00 |
| River Hull | Hull Barrier Victoria Pier | 0.00 m (Very High) | 0.00 | 0.00 | Falling | 20th May 2012 at 20:00 |
| River Idle | Mattersey | 1.41 m (Very High) | 0.55 | 1.41 | Rising | 20th May 2012 at 18:00 |
| River Idle | Ordsall | 0.52 m (Medium/High) | 0.19 | 0.53 | Rising | 20th May 2012 at 18:00 |
| River Inny | Bealsmill | 0.49 m (Low/Medium) | 0.29 | 0.89 | Rising | 20th May 2012 at 09:00 |
| River Isbourne | Hinton On Green | 0.16 m (Low) | 0.07 | 2.65 | Falling | 20th May 2012 at 18:00 |
| River Isle | Ashford Mill | 0.12 m (Low) | 0.08 | 1.50 | Falling | 20th May 2012 at 04:00 |
| River Itchen | Southam | 0.20 m (Low) | 0.09 | 0.68 | Falling | 20th May 2012 at 18:00 |
| River Ivel | Blunham | 0.31 m (Low/Medium) | 0.17 | 0.50 | Falling | 20th May 2012 at 08:45 |
| River Ivel | Biggleswade | 0.13 m (Low/Medium) | 0.00 | 0.33 | Falling | 20th May 2012 at 04:15 |
| River Kensey | Truscott | 0.55 m (Low/Medium) | 0.43 | 0.76 | Rising | 20th May 2012 at 04:15 |
| River Kenwyn | Truro | 0.22 m (Low/Medium) | 0.09 | 0.42 | Falling | 20th May 2012 at 06:00 |
| River Kym | Covington | 0.14 m (Low) | 0.11 | 0.38 | Falling | 20th May 2012 at 03:45 |
| River Kym | Hail Weston | 0.10 m (Low) | 0.03 | 0.43 | Falling | 20th May 2012 at 08:45 |
| River Leadon | Wedderburn Bridge | 0.37 m (Low) | 0.18 | 2.00 | Rising | 20th May 2012 at 18:00 |
| River Leam | Kites Hardwick | 0.19 m (Low) | 0.01 | 1.14 | Falling | 20th May 2012 at 18:00 |
| River Leen | Bulwell | 0.30 m (Low) | 0.24 | 0.61 | Falling | 20th May 2012 at 18:00 |
| River Leen | Lenton | 0.14 m (Low/Medium) | 0.08 | 0.30 | Falling | 20th May 2012 at 18:00 |
| River Lemon | Bickington | 0.50 m (Low/Medium) | 0.38 | 0.69 | Rising | 20th May 2012 at 09:00 |
| River Lemon | Holbeam Dam Downstream | 0.38 m (Low/Medium) | 0.21 | 0.74 | Rising | 20th May 2012 at 06:00 |
| River Lemon | Holbeam Dam | 0.37 m (Low/Medium) | 0.21 | 0.74 | Rising | 20th May 2012 at 06:00 |
| River Leven | Newby Bridge | 0.85 m (Medium) | 0.31 | 1.30 | Rising | 20th May 2012 at 15:00 |
| River Leven | Easby | 0.18 m (Low) | 0.11 | 0.40 | Falling | 20th May 2012 at 18:15 |
| River Leven | Foxton Bridge | 0.31 m (Low) | 0.21 | 1.50 | Falling | 20th May 2012 at 18:15 |
| River Leven | Great Ayton | 0.11 m (Low) | 0.03 | 0.50 | Falling | 20th May 2012 at 18:15 |
| River Leven | Stokesley | 0.17 m (Low) | 0.01 | 0.80 | Falling | 20th May 2012 at 05:45 |
| River Lew | Gribbleford Bridge | 0.25 m (Low/Medium) | 0.09 | 0.68 | Falling | 20th May 2012 at 04:00 |
| River Lodden | Lodden Bridge | 0.26 m (Low) | 0.09 | 1.28 | Falling | 20th May 2012 at 04:00 |
| River Lowman | Craze Lowman | 0.09 m (Low) | 0.06 | 0.49 | Falling | 20th May 2012 at 04:00 |
| River Lowther | Eamont Bridge, Beehive, River Lowther | 0.45 m (Low) | 0.33 | 0.96 | Rising | 20th May 2012 at 15:00 |
| River Lowther | Bampton Grange | 0.00 m (Very Low) | 0.28 | 0.98 | Falling | 30th November -0001 at 00:00 |
| River Lyd | Lifton Park | 0.57 m (Low/Medium) | 0.35 | 1.07 | Rising | 20th May 2012 at 04:00 |
| River Lyd | Parkend | 0.15 m (Low) | 0.04 | 0.60 | Falling | 20th May 2012 at 18:00 |
| River Lyd | Lydney | 0.31 m (Medium) | 0.13 | 0.46 | Falling | 20th May 2012 at 18:00 |
| River Lynher | Pillaton | 0.39 m (Low/Medium) | 0.22 | 0.80 | Rising | 20th May 2012 at 04:00 |
| River Manifold | Ilam | 0.22 m (Low/Medium) | 0.10 | 0.52 | Falling | 20th May 2012 at 18:00 |
| River Marden | Stanley | 0.72 m (Low/Medium) | 0.41 | 1.22 | Rising | 20th May 2012 at 04:00 |
| River Maun | Mansfield The Dykes | 0.30 m (Low/Medium) | 0.25 | 0.39 | Falling | 20th May 2012 at 18:00 |
| River Maun | Whitewater Bridge | 0.31 m (Low/Medium) | 0.24 | 0.43 | Falling | 20th May 2012 at 18:00 |
| River Meden | Perlethorpe | 0.24 m (Medium) | 0.18 | 0.29 | Falling | 20th May 2012 at 18:00 |
| River Meese | Tibberton | 0.17 m (Low) | 0.12 | 0.33 | Falling | 20th May 2012 at 18:00 |
| River Mole | North Molton | 0.28 m (Low/Medium) | 0.10 | 0.54 | Falling | 20th May 2012 at 04:00 |
| River Mole | Mole Mills | 0.09 m (Low) | 0.01 | 0.34 | Falling | 20th May 2012 at 09:00 |
| River Mole | Woodleigh | 0.51 m (Low/Medium) | 0.27 | 1.13 | Rising | 20th May 2012 at 06:00 |
| River Nadder | Wilton | 0.18 m (Low/Medium) | 0.09 | 0.36 | Falling | 20th May 2012 at 04:00 |
| River Nadder | Tisbury | 0.58 m (Low) | 0.53 | 1.70 | Rising | 20th May 2012 at 04:00 |
| River Neet | Woolstone Mill | 0.20 m (Low) | 0.05 | 0.95 | Falling | 20th May 2012 at 09:00 |
| River Neet | Helebridge | 0.07 m (Low/Medium) | 0.00 | 0.21 | Falling | 20th May 2012 at 04:00 |
| River Neet | Bencoolen Bridge | 0.08 m (Low) | 0.04 | 0.99 | Falling | 20th May 2012 at 04:00 |
| River Nidd | Birstwith | 0.27 m (Low) | 0.11 | 1.50 | Falling | 20th May 2012 at 18:15 |
| River Nidd | Gouthwaite | 0.17 m (Low) | 0.08 | 1.10 | Falling | 20th May 2012 at 18:15 |
| River Nidd | Hunsingore | 0.18 m (Low) | 0.08 | 0.85 | Falling | 20th May 2012 at 18:15 |
| River Nidd | Knaresborough | 0.52 m (Low) | 0.42 | 1.30 | Rising | 20th May 2012 at 18:15 |
| River Nidd | Pateley Bridge | 0.23 m (Low) | 0.14 | 2.50 | Falling | 20th May 2012 at 18:15 |
| River North Lew | Norley Bridge | 0.17 m (Low/Medium) | 0.07 | 0.42 | Falling | 20th May 2012 at 04:00 |
| River North Tyne | Bellingham | 0.09 m (Low) | 0.03 | 2.50 | Falling | 20th May 2012 at 18:30 |
| River North Tyne | Reaverhill | 0.58 m (Low) | 0.36 | 3.00 | Rising | 20th May 2012 at 18:30 |
| River Okement | Jacobstowe | 0.37 m (Low) | 0.24 | 0.79 | Rising | 20th May 2012 at 04:00 |
| River Ore | Framlingham | 0.17 m (Low) | 0.00 | 1.48 | Falling | 20th May 2012 at 04:15 |
| River Otter | Dotton | 0.28 m (Low) | 0.22 | 0.58 | Falling | 20th May 2012 at 06:00 |
| River Otter | Fenny Bridges | 0.24 m (Low) | 0.20 | 0.51 | Falling | 20th May 2012 at 04:00 |
| River Otter | Upottery | 0.54 m (Low) | 0.48 | 0.78 | Rising | 20th May 2012 at 04:00 |
| River Ottery | Canworthy Water | 0.33 m (Low) | 0.15 | 1.20 | Falling | 20th May 2012 at 09:00 |
| River Ouse | Offord | 0.24 m (Medium) | 0.00 | 0.42 | Falling | 20th May 2012 at 19:30 |
| River Ouse | Turweston | 0.17 m (Low) | 0.05 | 1.20 | Falling | 20th May 2012 at 06:30 |
| River Ouse | Thornborough | 0.00 m (Low) | 0.00 | 0.30 | Falling | 30th November -0001 at 00:00 |
| River Ouse | Newport Pagnell | 0.47 m (Medium) | 0.10 | 0.77 | Rising | 20th May 2012 at 06:00 |
| River Ouse | Haversham | 0.77 m (Low/Medium) | 0.23 | 1.53 | Rising | 20th May 2012 at 05:30 |
| River Ouse | Olney | 0.17 m (Medium/High) | 0.00 | 0.20 | Falling | 20th May 2012 at 06:00 |
| River Ouse | Turvey | 0.18 m (Low) | 0.10 | 0.71 | Falling | 20th May 2012 at 03:45 |
| River Ouse | Sharnbrook | 0.36 m (Low/Medium) | 0.09 | 0.76 | Rising | 20th May 2012 at 06:00 |
| River Ouse | Bedford | 0.16 m (Low/Medium) | 0.05 | 0.32 | Falling | 20th May 2012 at 06:30 |
| River Ouse | Cardington | 0.14 m (Low/Medium) | 0.06 | 0.25 | Falling | 20th May 2012 at 03:45 |
| River Ouse | Renhold | 0.23 m (Low/Medium) | 0.19 | 0.27 | Falling | 20th May 2012 at 03:45 |
| River Ouse | Church End | 0.41 m (Low/Medium) | 0.14 | 0.89 | Rising | 20th May 2012 at 08:45 |
| River Ouse | Eaton Socon | 0.06 m (Low) | 0.04 | 0.21 | Falling | 20th May 2012 at 03:45 |
| River Ouse | Godmanchester | 0.15 m (Low/Medium) | 0.00 | 0.33 | Falling | 20th May 2012 at 03:45 |
| River Ouse | Houghton | 0.28 m (Medium) | 0.10 | 0.43 | Falling | 20th May 2012 at 06:30 |
| River Ouse | St Ives | 0.27 m (Medium) | 0.13 | 0.35 | Falling | 20th May 2012 at 03:45 |
| River Ouse | Brownshill | 0.61 m (Medium) | 0.19 | 0.85 | Rising | 20th May 2012 at 11:00 |
| River Ouse | Earith | 1.72 m (Medium/High) | 0.07 | 2.06 | Rising | 20th May 2012 at 18:45 |
| River Ouse | Buckingham | 0.20 m (Low/Medium) | 0.06 | 0.46 | Falling | 20th May 2012 at 04:15 |
| River Ouse | Stoney Stratford | 1.00 m (Very High) | 0.10 | 0.33 | Rising | 30th November -0001 at 00:00 |
| River Ouse | Welney Causeway | 2.13 m (Very High) | 0.00 | 2.00 | Rising | 20th May 2012 at 17:15 |
| River Ouse | Foss Barrier | 5.64 m (Low) | 5.05 | 7.90 | Rising | 20th May 2012 at 18:15 |
| River Ouse | Monkton | 0.97 m (Low) | 0.12 | 3.79 | Rising | 20th May 2012 at 18:15 |
| River Ouse | Skelton | 1.20 m (Low/Medium) | 0.51 | 3.00 | Rising | 20th May 2012 at 21:00 |
| River Ouse | Viking Recorder | 0.64 m (Low/Medium) | 0.05 | 1.90 | Rising | 20th May 2012 at 18:15 |
| River Ouse | Blacktoft | 0.00 m (Very High) | 0.00 | 0.00 | Falling | 20th May 2012 at 20:00 |
| River Ouse | Cawood | 1.72 m (Low) | 0.84 | 6.10 | Rising | 20th May 2012 at 18:15 |
| River Ouse | Naburn | 0.84 m (Low/Medium) | 0.44 | 1.65 | Rising | 20th May 2012 at 18:15 |
| River Ouse | Selby Lock | 1.90 m (Low/Medium) | 0.13 | 3.78 | Rising | 20th May 2012 at 18:15 |
| River Ouse | Selby Westmill | 3.70 m (Medium/High) | 0.36 | 4.30 | Rising | 20th May 2012 at 20:00 |
| River Ouse | Goole | 0.00 m (Very High) | 0.00 | 0.00 | Falling | 20th May 2012 at 18:00 |
| River Ouzel | Leighton Buzzard | 0.15 m (Low/Medium) | 0.07 | 0.33 | Falling | 20th May 2012 at 19:45 |
| River Ouzel | Bletchley | 0.36 m (Low/Medium) | 0.23 | 0.68 | Rising | 20th May 2012 at 06:30 |
| River Ouzel | Willen | 0.38 m (Low/Medium) | 0.25 | 0.67 | Rising | 20th May 2012 at 17:00 |
| River Pant | Shalford | 0.50 m (Low) | 0.33 | 2.45 | Rising | 20th May 2012 at 04:15 |
| River Pant | Copford Hall | 0.05 m (Low) | 0.05 | 1.24 | Falling | 20th May 2012 at 06:30 |
| River Parrett | Westover Drain | 1.11 m (Low) | 0.86 | 3.05 | Rising | 20th May 2012 at 21:00 |
| River Parrett | Gaw Bridge | 1.42 m (Medium/High) | 0.36 | 1.45 | Rising | 20th May 2012 at 04:00 |
| River Parrett | Chiselborough | 0.11 m (Low) | 0.05 | 1.80 | Falling | 20th May 2012 at 20:45 |
| River Parrett (Tidal) | West Quay | 0.00 m (Very High) | 0.00 | 0.00 | Falling | 20th May 2012 at 04:15 |
| River Penk | Penkridge | 0.27 m (Low) | 0.22 | 0.76 | Falling | 20th May 2012 at 18:00 |
| River Perry | Yeaton | 0.19 m (Low) | 0.11 | 0.70 | Falling | 20th May 2012 at 18:00 |
| River Piddle | Little Puddle | 0.16 m (Low/Medium) | 0.07 | 0.38 | Falling | 20th May 2012 at 04:15 |
| River Piddle | South House | 0.18 m (Low) | 0.08 | 0.63 | Falling | 20th May 2012 at 04:15 |
| River Piddle | Briantspuddle | 0.37 m (Low/Medium) | 0.17 | 0.66 | Rising | 20th May 2012 at 04:00 |
| River Plym | Carnwood | 0.37 m (Low/Medium) | 0.16 | 0.66 | Rising | 20th May 2012 at 04:00 |
| River Pont | Heugh Mill | 0.21 m (Low/Medium) | 0.09 | 0.50 | Falling | 20th May 2012 at 18:30 |
| River Pont | Callerton Lane | 0.22 m (Low/Medium) | 0.00 | 0.85 | Falling | 20th May 2012 at 18:30 |
| River Pont | Stamfordham | 0.51 m (Low/Medium) | 0.06 | 1.20 | Rising | 20th May 2012 at 18:30 |
| River Poulter | Twyford Bridge | 0.64 m (Medium) | 0.16 | 1.00 | Rising | 20th May 2012 at 18:00 |
| River Rea | Calthorpe Park | 0.12 m (Low) | 0.09 | 0.42 | Falling | 20th May 2012 at 18:00 |
| River Rede | Otterburn Mill | 0.42 m (Low) | 0.19 | 3.10 | Rising | 20th May 2012 at 18:30 |
| River Rede | Otterburn | 0.46 m (Low) | 0.35 | 2.80 | Rising | 20th May 2012 at 18:30 |
| River Rede | Rede Bridge | 0.38 m (Low) | 0.21 | 1.60 | Rising | 20th May 2012 at 18:30 |
| River Rhee | Cambridge Byron's Pool | 0.14 m (Low) | 0.12 | 0.29 | Falling | 20th May 2012 at 06:30 |
| River Rhee | Wimpole | 0.12 m (Low/Medium) | 0.05 | 0.28 | Falling | 20th May 2012 at 03:45 |
| River Rhee | Haslingfield Burnt Mill | 0.15 m (Low) | 0.08 | 0.39 | Falling | 20th May 2012 at 06:00 |
| River Riccal | Nunnington | 0.21 m (Low) | 0.16 | 0.44 | Falling | 20th May 2012 at 18:15 |
| River Roden | Rodington | 0.35 m (Low) | 0.21 | 1.00 | Unchanged | 20th May 2012 at 18:00 |
| River Rothay | Miller Bridge House | 0.51 m (Low) | 0.41 | 1.06 | Rising | 20th May 2012 at 15:00 |
| River Rother | Udiam | 0.24 m (Low) | 0.07 | 2.30 | Falling | 20th May 2012 at 15:30 |
| River Rother | Hady Hill | 0.64 m (Low) | 0.51 | 1.07 | Rising | 20th May 2012 at 18:00 |
| River Rother | Killamarsh | 0.12 m (Low) | 0.00 | 1.48 | Falling | 20th May 2012 at 18:00 |
| River Rother | Whittington | 0.35 m (Low) | 0.23 | 1.50 | Rising | 20th May 2012 at 18:00 |
| River Rother | Woodhouse Mill Regulator | 0.54 m (Low) | 0.37 | 1.78 | Rising | 20th May 2012 at 05:15 |
| River Ryburn | Ripponden | 0.17 m (Low) | 0.08 | 0.80 | Falling | 20th May 2012 at 18:00 |
| River Rye | Broadway Foot | 0.17 m (Low/Medium) | 0.08 | 0.40 | Falling | 20th May 2012 at 18:00 |
| River Rye | Howe Bridge | 1.26 m (Low/Medium) | 0.19 | 3.45 | Rising | 20th May 2012 at 18:00 |
| River Rye | Ness | 0.59 m (Low/Medium) | 0.34 | 1.30 | Rising | 20th May 2012 at 18:00 |
| River Ryton | Worksop | 0.27 m (Medium) | 0.15 | 0.35 | Falling | 20th May 2012 at 18:00 |
| River Ryton | Blyth | 0.71 m (Medium) | 0.42 | 0.85 | Rising | 20th May 2012 at 18:00 |
| River Salwarpe | Harford Hill | 0.21 m (Low) | 0.19 | 2.00 | Falling | 20th May 2012 at 18:00 |
| River Salwarpe | Stoke Prior | 0.15 m (Low) | 0.13 | 0.36 | Falling | 20th May 2012 at 18:00 |
| River Sence (Soar) | South Wigston | 0.72 m (Low) | 0.60 | 1.15 | Rising | 20th May 2012 at 18:00 |
| River Seven | Normanby | 0.22 m (Low/Medium) | 0.08 | 0.55 | Falling | 20th May 2012 at 18:00 |
| River Seven | Sinnington | 0.32 m (Low) | 0.10 | 1.30 | Falling | 20th May 2012 at 18:00 |
| River Severn | Montford | 1.25 m (Low) | 0.29 | 4.80 | Rising | 20th May 2012 at 21:00 |
| River Severn | Abermule | 0.59 m (Low) | 0.32 | 1.64 | Rising | 20th May 2012 at 16:45 |
| River Severn | Llanidloes | 1.17 m (Low/Medium) | 1.01 | 1.54 | Rising | 20th May 2012 at 18:00 |
| River Severn | Caersws | 1.09 m (Low) | 1.06 | 1.98 | Rising | 20th May 2012 at 18:00 |
| River Severn | Welsh Bridge | 0.84 m (Low) | 0.42 | 2.70 | Rising | 20th May 2012 at 18:00 |
| River Severn | Llandrinio | 1.52 m (Low) | 1.23 | 5.31 | Rising | 20th May 2012 at 16:45 |
| River Severn | Crew Green | 1.08 m (Low) | 0.19 | 5.20 | Rising | 20th May 2012 at 18:00 |
| River Severn | Buttington | 1.19 m (Low) | 0.71 | 3.79 | Rising | 20th May 2012 at 16:45 |
| River Severn | Cae Howel | 0.95 m (Low) | 0.92 | 3.40 | Rising | 20th May 2012 at 18:00 |
| River Severn | Bewdley | 0.71 m (Low) | 0.21 | 3.30 | Rising | 20th May 2012 at 22:00 |
| River Severn | Diglis | 0.68 m (Low) | 0.55 | 2.80 | Rising | 20th May 2012 at 18:00 |
| River Severn | Buildwas | 0.90 m (Low) | 0.42 | 3.40 | Rising | 20th May 2012 at 21:00 |
| River Severn | Bridgnorth | 0.90 m (Low) | 0.52 | 3.60 | Rising | 20th May 2012 at 18:00 |
| River Severn | Worcester (Barbourne) | 0.77 m (Low) | 0.55 | 3.35 | Rising | 20th May 2012 at 18:00 |
| River Severn | Saxons Lode | 0.69 m (Low) | 0.42 | 4.00 | Rising | 20th May 2012 at 18:00 |
| River Severn | Haw Bridge | 1.20 m (Low) | 0.53 | 4.18 | Rising | 20th May 2012 at 18:00 |
| River Severn | Mythe Bridge | 0.59 m (Low) | 0.41 | 2.80 | Rising | 20th May 2012 at 18:00 |
| River Severn | Minsterworth | 1.66 m (Low) | 0.95 | 5.75 | Rising | 20th May 2012 at 18:00 |
| River Severn | Epney | 2.16 m (Low/Medium) | 1.59 | 3.69 | Rising | 20th May 2012 at 18:00 |
| River Severn | Gloucester (Severn) | 0.72 m (Low) | 0.44 | 3.20 | Rising | 20th May 2012 at 18:00 |
| River Severn | Sharpness | 4.64 m (Low/Medium) | 2.00 | 10.20 | Rising | 20th May 2012 at 18:00 |
| River Severn | Deerhurst | 1.27 m (Low) | 0.50 | 4.49 | Rising | 20th May 2012 at 18:00 |
| River Severn | Ashleworth | 1.11 m (Low) | 0.58 | 3.58 | Rising | 20th May 2012 at 18:00 |
| River Severn | Sandhurst | 0.94 m (Low) | 0.52 | 2.92 | Rising | 20th May 2012 at 18:00 |
| River Shalbourne | Hungerford Shalbourne | 0.11 m (Low/Medium) | 0.04 | 0.21 | Falling | 20th May 2012 at 09:00 |
| River Sheaf | Highfield | 0.23 m (Low) | 0.12 | 0.85 | Falling | 20th May 2012 at 18:00 |
| River Sheppey | Fenny Castle | 0.21 m (Low/Medium) | 0.09 | 0.42 | Falling | 20th May 2012 at 04:30 |
| River Sid | Sidmouth | 0.00 m (Very Low) | 0.01 | 0.08 | Falling | 20th May 2012 at 06:00 |
| River Sid | Sidbury | 0.24 m (Low/Medium) | 0.14 | 0.49 | Falling | 20th May 2012 at 04:00 |
| River Skerne | Bradbury | 0.21 m (Low) | 0.14 | 1.50 | Falling | 20th May 2012 at 18:15 |
| River Skerne | John St Darlington | 0.20 m (Low) | 0.08 | 1.30 | Falling | 20th May 2012 at 18:15 |
| River Skerne | Preston-Le-Skerne | 0.20 m (Low) | 0.14 | 1.20 | Falling | 20th May 2012 at 18:15 |
| River Skerne | South Park | 0.24 m (Low) | 0.14 | 0.88 | Falling | 20th May 2012 at 18:15 |
| River Soar | Kegworth | 0.46 m (Low) | 0.41 | 0.72 | Rising | 20th May 2012 at 18:00 |
| River Soar | Littlethorpe | 0.61 m (Low) | 0.46 | 1.32 | Rising | 20th May 2012 at 18:00 |
| River Soar | Pillings Lock | 1.02 m (Low) | 0.94 | 1.31 | Rising | 20th May 2012 at 18:00 |
| River Soar | Freemans Weir | 0.19 m (Low) | 0.17 | 0.27 | Falling | 20th May 2012 at 18:00 |
| River South Tyne | Alston | 0.28 m (Low) | 0.16 | 1.25 | Falling | 20th May 2012 at 18:30 |
| River South Tyne | Featherstone | 0.30 m (Low) | 0.12 | 1.30 | Falling | 20th May 2012 at 18:30 |
| River South Tyne | Haydon Bridge | 0.45 m (Low) | 0.24 | 2.00 | Rising | 20th May 2012 at 18:30 |
| River Sow | Milford | 0.37 m (Low) | 0.30 | 1.99 | Rising | 20th May 2012 at 18:00 |
| River Sow | Great Bridgford | 0.28 m (Low) | 0.22 | 0.54 | Falling | 20th May 2012 at 18:00 |
| River Sow | Milford | 0.37 m (Low) | 0.30 | 1.99 | Rising | 20th May 2012 at 18:00 |
| River Sow | Great Bridgford | 0.28 m (Low) | 0.22 | 0.54 | Falling | 20th May 2012 at 18:00 |
| River Stiffkey | Little Walsingham | 0.38 m (Medium) | 0.07 | 0.53 | Rising | 20th May 2012 at 04:15 |
| River Stour | Ensbury | 0.81 m (Low/Medium) | 0.31 | 1.80 | Rising | 20th May 2012 at 04:15 |
| River Stour | Gillingham Le Neubourg Way | 0.36 m (Low) | 0.29 | 1.40 | Rising | 20th May 2012 at 04:15 |
| River Stour | Milton on Stour | 0.07 m (Low) | 0.04 | 0.70 | Falling | 20th May 2012 at 04:15 |
| River Stour | Iford Bridge | 0.00 m (Low) | 0.00 | 1.06 | Rising | 20th May 2012 at 04:00 |
| River Stour | Wimborne | 0.46 m (Very High) | 0.00 | 0.00 | Rising | 20th May 2012 at 04:15 |
| River Stour | Throop | 0.55 m (Low) | 0.36 | 1.20 | Rising | 20th May 2012 at 09:00 |
| River Stour | Blandford | 0.48 m (Low) | 0.38 | 1.10 | Rising | 20th May 2012 at 04:00 |
| River Stour | Hammoon | 0.34 m (Low) | 0.15 | 2.60 | Falling | 20th May 2012 at 09:00 |
| River Stour | Lamarsh | 0.23 m (Low) | 0.15 | 1.37 | Falling | 20th May 2012 at 04:15 |
| River Stour | Bures Bridge | 0.77 m (Medium) | 0.00 | 1.43 | Rising | 20th May 2012 at 05:15 |
| River Stour | Kedington | 0.13 m (Low) | 0.11 | 1.40 | Falling | 20th May 2012 at 04:15 |
| River Stour | Westmill | 0.20 m (Low) | 0.10 | 1.48 | Falling | 20th May 2012 at 06:30 |
| River Stour | Langham | 0.39 m (Low) | 0.21 | 1.46 | Rising | 20th May 2012 at 04:15 |
| River Stour (Warks) | Alscot Park | 0.41 m (Medium) | 0.12 | 0.67 | Rising | 20th May 2012 at 18:00 |
| River Stour (Warks) | Shipston | 0.41 m (Low/Medium) | 0.12 | 0.97 | Rising | 20th May 2012 at 18:00 |
| River Stour (Worcs) | Stourbridge | 0.18 m (Low) | 0.11 | 1.10 | Falling | 20th May 2012 at 18:00 |
| River Stour (Worcs) | Stourton | 0.15 m (Low) | 0.11 | 2.40 | Falling | 20th May 2012 at 18:00 |
| River Stour (Worcs) | Kidderminster | 0.87 m (Low) | 0.84 | 1.70 | Rising | 20th May 2012 at 18:00 |
| River Stour (Worcs) | Halesowen | 0.49 m (Low) | 0.45 | 0.79 | Rising | 20th May 2012 at 18:00 |
| River Strat | Bush | 0.29 m (Low/Medium) | 0.18 | 0.44 | Falling | 20th May 2012 at 06:00 |
| River Strine | Crudgington | 0.19 m (Low) | 0.17 | 0.79 | Falling | 20th May 2012 at 18:00 |
| River Swale | Catterick Bridge | 0.58 m (Low) | 0.30 | 2.40 | Rising | 20th May 2012 at 18:15 |
| River Swale | Crakehill | 0.65 m (Low) | 0.22 | 3.00 | Rising | 20th May 2012 at 18:15 |
| River Swale | Grinton Bridge | 0.00 m (Low) | 0.00 | 1.50 | Falling | 30th November -0001 at 00:00 |
| River Swale | Morton-On-Swale | 0.63 m (Low) | 0.13 | 5.80 | Rising | 20th May 2012 at 18:15 |
| River Swale | Myton-On-Swale | 1.27 m (Low/Medium) | 0.44 | 3.44 | Rising | 20th May 2012 at 18:15 |
| River Swale | Richmond Lownthwaite Bridge | 0.27 m (Low) | 0.00 | 2.00 | Falling | 20th May 2012 at 18:15 |
| River Tale | Fairmile | 0.28 m (Low) | 0.27 | 0.73 | Falling | 20th May 2012 at 04:00 |
| River Tamar | Crowford Bridge | 0.21 m (Low) | 0.08 | 0.76 | Falling | 20th May 2012 at 09:00 |
| River Tamar | Polson Bridge | 0.44 m (Low) | 0.23 | 1.50 | Rising | 20th May 2012 at 04:00 |
| River Tamar | Greystone Bridge | 0.30 m (Low) | 0.03 | 1.43 | Falling | 20th May 2012 at 04:00 |
| River Tamar | Gunnislake | 0.54 m (Low) | 0.30 | 1.54 | Rising | 20th May 2012 at 06:00 |
| River Tame | Water Orton | 0.27 m (Low) | 0.27 | 1.44 | Falling | 20th May 2012 at 18:00 |
| River Tame | Tamworth | 0.88 m (Low) | 0.86 | 1.30 | Rising | 20th May 2012 at 18:00 |
| River Tame | Bescot | 0.73 m (Low/Medium) | 0.32 | 1.25 | Rising | 20th May 2012 at 18:00 |
| River Tame | Perry Park | 0.41 m (Low) | 0.41 | 0.87 | Rising | 20th May 2012 at 18:00 |
| River Tanat | Llanyblodwel | 0.44 m (Low/Medium) | 0.23 | 1.05 | Rising | 20th May 2012 at 18:00 |
| River Tavy | Mary Tavy | 0.16 m (Low) | 0.06 | 0.61 | Falling | 20th May 2012 at 09:00 |
| River Tavy | Denham Ludbrook | 0.38 m (Low/Medium) | 0.16 | 0.76 | Rising | 20th May 2012 at 06:00 |
| River Taw | Umberleigh | 0.45 m (Low) | 0.18 | 1.33 | Rising | 20th May 2012 at 06:00 |
| River Taw | Newnham Bridge | 0.42 m (Low) | 0.21 | 1.20 | Rising | 20th May 2012 at 04:00 |
| River Taw | Taw Bridge | 0.22 m (Low/Medium) | 0.12 | 0.50 | Falling | 20th May 2012 at 04:00 |
| River Taw | Sticklepath | 0.29 m (Low/Medium) | 0.06 | 0.54 | Falling | 20th May 2012 at 09:00 |
| River Team | Team Valley | 0.27 m (Low) | 0.18 | 0.75 | Falling | 20th May 2012 at 18:30 |
| River Tean | Upper Tean | 0.25 m (Medium) | 0.04 | 0.40 | Falling | 20th May 2012 at 18:00 |
| River Tees | Barnard Castle | 0.58 m (Low) | 0.46 | 1.40 | Rising | 20th May 2012 at 18:15 |
| River Tees | Low Moor | 0.60 m (Low) | 0.31 | 4.00 | Rising | 20th May 2012 at 18:15 |
| River Tees | Middleton | 0.56 m (Low) | 0.37 | 1.50 | Rising | 20th May 2012 at 18:15 |
| River Tees | Neasham Screen | 18.70 m (Low/Medium) | 18.50 | 19.00 | Rising | 20th May 2012 at 18:15 |
| River Tees | Yarm | 0.53 m (Low) | 0.45 | 2.05 | Rising | 20th May 2012 at 18:15 |
| River Teign | Clifford Bridge | 0.54 m (Low/Medium) | 0.19 | 1.05 | Rising | 20th May 2012 at 09:00 |
| River Teign | Ashton | 0.62 m (Low/Medium) | 0.43 | 0.98 | Rising | 20th May 2012 at 04:00 |
| River Teign | Coombe Cellars | 0.00 m (Very High) | 0.00 | 0.00 | Falling | 20th May 2012 at 04:00 |
| River Tern | Walcot | 0.44 m (Low) | 0.39 | 1.30 | Rising | 20th May 2012 at 18:00 |
| River Tern | Eaton On Tern | 0.21 m (Low) | 0.17 | 0.60 | Falling | 20th May 2012 at 18:00 |
| River Thrushel | Hayne Bridge | 0.26 m (Low/Medium) | 0.11 | 0.67 | Falling | 20th May 2012 at 04:00 |
| River Thrushel | Tinhay | 0.21 m (Low) | 0.12 | 0.57 | Falling | 20th May 2012 at 04:00 |
| River Thurne | Repps | 0.37 m (Low/Medium) | 0.00 | 1.07 | Rising | 20th May 2012 at 04:15 |
| River Tiddy | Tideford | 0.16 m (Low/Medium) | 0.06 | 0.38 | Falling | 20th May 2012 at 04:00 |
| River Tone | Greenham | 0.29 m (Low) | 0.15 | 1.09 | Falling | 20th May 2012 at 04:00 |
| River Tone | Currymoor River | 3.47 m (Medium) | 1.71 | 4.30 | Rising | 20th May 2012 at 21:00 |
| River Tone | Bishops Hull | 0.21 m (Low) | 0.09 | 1.07 | Falling | 20th May 2012 at 04:00 |
| River Tone | Currymoor Drain | 2.46 m (Very High) | 0.38 | 2.28 | Rising | 20th May 2012 at 21:00 |
| River Torridge | Weare Giffard | 0.25 m (Low) | 0.00 | 1.80 | Falling | 20th May 2012 at 04:00 |
| River Torridge | Torrington | 0.73 m (Low) | 0.45 | 1.83 | Rising | 20th May 2012 at 06:00 |
| River Torridge | Dolton | 0.29 m (Low) | 0.03 | 1.43 | Falling | 20th May 2012 at 04:00 |
| River Torridge | Rockhay Bridge | 0.53 m (Low) | 0.25 | 1.43 | Rising | 20th May 2012 at 04:00 |
| River Tove | Cappenham | 0.29 m (Low/Medium) | 0.12 | 0.59 | Falling | 20th May 2012 at 08:45 |
| River Tove | Towcester | 0.25 m (Medium) | 0.00 | 0.34 | Falling | 20th May 2012 at 19:30 |
| River Trent | Great Haywood | 0.86 m (Low) | 0.80 | 1.50 | Rising | 20th May 2012 at 18:00 |
| River Trent | Kings Bromley | 0.98 m (Low/Medium) | 0.58 | 1.52 | Rising | 20th May 2012 at 18:00 |
| River Trent | Bucknall | 0.14 m (Low) | 0.07 | 0.39 | Falling | 20th May 2012 at 18:00 |
| River Trent | Darlaston | 0.87 m (Low/Medium) | 0.47 | 1.49 | Rising | 20th May 2012 at 18:00 |
| River Trent | Great Haywood | 0.86 m (Low) | 0.80 | 1.50 | Rising | 20th May 2012 at 18:00 |
| River Trent | Kings Bromley | 0.98 m (Low/Medium) | 0.58 | 1.52 | Rising | 20th May 2012 at 18:00 |
| River Trent | Bucknall | 0.14 m (Low) | 0.07 | 0.39 | Falling | 20th May 2012 at 18:00 |
| River Trent | Darlaston | 0.87 m (Low/Medium) | 0.47 | 1.49 | Rising | 20th May 2012 at 18:00 |
| River Trent | Drakelow | 1.21 m (Low) | 1.02 | 2.04 | Rising | 20th May 2012 at 18:00 |
| River Trent | Shardlow | 0.80 m (Low/Medium) | 0.41 | 1.90 | Rising | 20th May 2012 at 18:00 |
| River Trent | Colwick | 1.29 m (Low) | 1.01 | 2.74 | Rising | 20th May 2012 at 18:00 |
| River Trent | North Muskham | 0.99 m (Low) | 0.80 | 1.63 | Rising | 20th May 2012 at 18:00 |
| River Trent | Torksey | 2.34 m (Low/Medium) | 1.40 | 3.60 | Rising | 20th May 2012 at 18:00 |
| River Trent | Keadby | 3.99 m (Medium/High) | 0.61 | 4.68 | Rising | 20th May 2012 at 18:00 |
| River Trent | Gainsborough | 1.78 m (Low) | 1.29 | 3.64 | Rising | 20th May 2012 at 18:00 |
| River Tutt | Boroughbridge, Tutt level | 12.00 m (Low) | 11.90 | 13.00 | Rising | 20th May 2012 at 18:15 |
| River Tyne | Bywell | 0.76 m (Low) | 0.41 | 3.50 | Rising | 20th May 2012 at 18:30 |
| River Tyne | Riding Mill | 0.82 m (Low/Medium) | 0.33 | 2.10 | Rising | 20th May 2012 at 18:30 |
| River Ure | Aldwark Bridge | 0.64 m (Low) | 0.02 | 3.00 | Rising | 20th May 2012 at 18:15 |
| River Ure | Bainbridge | 0.25 m (Low) | 0.05 | 1.50 | Falling | 20th May 2012 at 18:15 |
| River Ure | Kilgram | 0.56 m (Low) | 0.27 | 2.50 | Rising | 20th May 2012 at 18:15 |
| River Ure | Masham | 0.46 m (Low) | 0.14 | 2.30 | Rising | 20th May 2012 at 18:15 |
| River Ure | Ripon Ure Bank | 0.23 m (Low) | 0.03 | 0.89 | Falling | 20th May 2012 at 18:15 |
| River Ure | Westwick Lock | 0.26 m (Low) | 0.11 | 2.50 | Falling | 20th May 2012 at 18:15 |
| River Ure | Boroughbridge | 9.85 m (Low) | 9.62 | 13.00 | Rising | 20th May 2012 at 18:15 |
| River Usway Burn | Shilmoor | 0.11 m (Low) | 0.04 | 0.65 | Falling | 20th May 2012 at 18:30 |
| River Vyrnwy | Vyrnwy Weir | 0.10 m (Low) | 0.07 | 0.59 | Falling | 20th May 2012 at 18:00 |
| River Vyrnwy | Llanymynech | 1.29 m (Low) | 0.88 | 3.15 | Rising | 20th May 2012 at 16:45 |
| River Vyrnwy | Pont Robert | 1.03 m (Low) | 0.91 | 1.61 | Rising | 20th May 2012 at 16:45 |
| River Waldon | Bradworthy | 0.23 m (Low/Medium) | 0.13 | 0.40 | Falling | 20th May 2012 at 04:00 |
| River Walkham | Horrabridge | 0.27 m (Low) | 0.21 | 0.47 | Falling | 20th May 2012 at 04:00 |
| River Wansbeck | Middleton Bridge | 0.26 m (Low) | 0.06 | 1.81 | Falling | 20th May 2012 at 18:30 |
| River Wansbeck | Mitford | 0.75 m (Low/Medium) | 0.22 | 1.70 | Rising | 20th May 2012 at 18:30 |
| River Waveney | Billingford | 0.24 m (Low) | 0.15 | 0.86 | Falling | 20th May 2012 at 03:45 |
| River Waveney | Diss | 0.10 m (Low) | 0.00 | 0.96 | Falling | 20th May 2012 at 06:30 |
| River Waveney | Beccles Quay | 0.00 m (Low) | 0.00 | 1.09 | Falling | 30th November -0001 at 00:00 |
| River Waveney | Oulton Broad | 0.11 m (Low) | -0.20 | 1.30 | Falling | 20th May 2012 at 06:30 |
| River Wear | Chester-Le-Street | 0.53 m (Low) | 0.29 | 3.40 | Rising | 20th May 2012 at 18:15 |
| River Wear | Sunderland Bridge | 0.46 m (Low) | 0.25 | 1.80 | Rising | 20th May 2012 at 18:15 |
| River Wear | Witton Park | 0.53 m (Low) | 0.29 | 3.00 | Rising | 20th May 2012 at 18:15 |
| River Wensum | Fakenham | 0.41 m (Medium) | 0.09 | 0.57 | Rising | 20th May 2012 at 16:15 |
| River Wensum | Swanton Morley | 0.13 m (Low) | 0.06 | 0.62 | Falling | 20th May 2012 at 06:30 |
| River Went | Walden Stubbs | 0.22 m (Low) | 0.16 | 0.75 | Falling | 20th May 2012 at 18:00 |
| River Wey | Upwey | 0.11 m (Low) | 0.10 | 0.34 | Falling | 20th May 2012 at 04:15 |
| River Wey | Broadwey | 0.23 m (Low) | 0.13 | 0.56 | Falling | 20th May 2012 at 04:00 |
| River Wharfe | Addingham | 0.40 m (Low) | 0.19 | 1.87 | Rising | 20th May 2012 at 18:00 |
| River Wharfe | Arthington | 0.63 m (Low) | 0.32 | 3.30 | Rising | 20th May 2012 at 18:00 |
| River Wharfe | Cock Beck Sluices | 4.01 m (Low) | 3.44 | 7.30 | Rising | 20th May 2012 at 18:00 |
| River Wharfe | Collingham | 0.60 m (Low) | 0.35 | 1.59 | Rising | 20th May 2012 at 18:00 |
| River Wharfe | Fleet Pumping Station | 2.55 m (Low) | 2.00 | 6.50 | Rising | 20th May 2012 at 18:15 |
| River Wharfe | Flint Mill | 0.59 m (Low) | 0.40 | 1.80 | Rising | 20th May 2012 at 18:00 |
| River Wharfe | Grassington | 0.14 m (Low) | 0.00 | 1.50 | Falling | 20th May 2012 at 18:00 |
| River Wharfe | Ilkley | 0.22 m (Low) | 0.09 | 2.90 | Falling | 20th May 2012 at 18:00 |
| River Wharfe | Kettlewell | 0.36 m (Low) | 0.17 | 2.00 | Rising | 20th May 2012 at 18:00 |
| River Wharfe | Otley | 0.43 m (Low) | 0.36 | 1.50 | Rising | 20th May 2012 at 18:00 |
| River Wharfe | Pool Bridge | 0.31 m (Low) | 0.09 | 2.90 | Rising | 20th May 2012 at 18:00 |
| River Wharfe | Tadcaster | 0.35 m (Low) | 0.18 | 2.90 | Falling | 20th May 2012 at 18:00 |
| River Whitting | Sheepbridge | 0.12 m (Low) | 0.06 | 0.75 | Falling | 20th May 2012 at 18:00 |
| River Wid | Writtle | 0.13 m (Low) | 0.03 | 0.83 | Falling | 20th May 2012 at 04:00 |
| River Wiske | Kirby Wiske | 0.35 m (Low) | 0.18 | 2.00 | Rising | 20th May 2012 at 18:15 |
| River Wiske | Viewly Bridge | 0.29 m (Low) | 0.15 | 0.83 | Falling | 20th May 2012 at 18:15 |
| River Worfe | Burcote | 0.17 m (Low) | 0.10 | 0.55 | Falling | 20th May 2012 at 18:00 |
| River Worth | Keighley | 0.30 m (Low) | 0.22 | 1.00 | Falling | 20th May 2012 at 18:00 |
| River Wreake | Syston | 1.43 m (Low) | 1.43 | 2.06 | Rising | 20th May 2012 at 18:00 |
| River Wriggle | Chetnole | 0.19 m (Low) | 0.03 | 1.10 | Falling | 20th May 2012 at 04:00 |
| River Wye | Ashford in the Water | 0.43 m (Low/Medium) | 0.27 | 0.61 | Rising | 20th May 2012 at 04:00 |
| River Wye | Buxton | 0.39 m (Medium) | 0.16 | 0.54 | Rising | 20th May 2012 at 18:00 |
| River Wylye | Brixton Deverill | 0.25 m (Low/Medium) | 0.12 | 0.50 | Falling | 20th May 2012 at 04:15 |
| River Wylye | Norton Bavant | 0.23 m (Low/Medium) | 0.12 | 0.55 | Falling | 20th May 2012 at 09:00 |
| River Wylye | South Newton | 0.31 m (Low/Medium) | 0.14 | 0.65 | Falling | 20th May 2012 at 04:00 |
| River Yare | Low Street | 0.21 m (Low) | 0.17 | 1.07 | Falling | 20th May 2012 at 06:30 |
| River Yare | Brundall | 0.22 m (Low) | 0.02 | 1.09 | Falling | 20th May 2012 at 04:15 |
| River Yare | Cantley | 0.40 m (Low) | 0.20 | 1.24 | Falling | 20th May 2012 at 06:30 |
| River Yare | Reedham | 0.30 m (Low/Medium) | -0.40 | 1.40 | Falling | 20th May 2012 at 06:30 |
| River Yare | Rockland St Mary | 0.09 m (Low) | 0.00 | 1.09 | Falling | 20th May 2012 at 06:30 |
| River Yarty | Court Place Farm | 0.27 m (Medium) | 0.01 | 0.41 | Falling | 20th May 2012 at 04:00 |
| River Yealm | Cornwood | 0.21 m (Low/Medium) | 0.11 | 0.40 | Falling | 20th May 2012 at 09:00 |
| River Yealm | Puslinch | 0.38 m (Low/Medium) | 0.21 | 0.66 | Rising | 20th May 2012 at 04:15 |
| River Yeo | Collard Bridge | 0.43 m (Low/Medium) | 0.24 | 0.73 | Rising | 20th May 2012 at 04:00 |
| River Yeo | Veraby | 0.36 m (Low/Medium) | 0.21 | 0.72 | Rising | 20th May 2012 at 04:00 |
| River Yeo | Lapford | 0.32 m (Low) | 0.32 | 1.24 | Falling | 20th May 2012 at 09:00 |
| River Yeo | Yeoford | 0.37 m (Medium) | 0.10 | 0.60 | Rising | 20th May 2012 at 09:00 |
| River Yeo | Sherborne Lake | 0.11 m (Medium) | 0.01 | 0.20 | Falling | 20th May 2012 at 04:00 |
| River Yeo | Huish Episcopi River | 1.84 m (Low/Medium) | 0.80 | 3.44 | Rising | 20th May 2012 at 21:30 |
| River Yeo | Pen Mill | 0.27 m (Low) | 0.11 | 3.10 | Falling | 20th May 2012 at 04:00 |
| Roch | Albert Royds Bridge | 0.39 m (Low) | 0.26 | 1.30 | Rising | 20th May 2012 at 15:00 |
| Roding | Abridge | 0.97 m (Low) | 0.83 | 1.86 | Rising | 20th May 2012 at 09:00 |
| Roding | High Ongar | 0.18 m (Low) | 0.05 | 0.70 | Falling | 20th May 2012 at 21:30 |
| Roding | Shonks Mill Bridge | 0.42 m (Low) | 0.29 | 1.80 | Rising | 20th May 2012 at 09:00 |
| Roding | Loughton | 0.11 m (Low) | 0.03 | 0.70 | Falling | 20th May 2012 at 15:30 |
| Roding | Redbridge | 0.29 m (Low) | 0.12 | 0.87 | Falling | 20th May 2012 at 15:30 |
| Roe Beck | Stockdalewath | 0.29 m (Low) | 0.18 | 1.20 | Falling | 20th May 2012 at 15:00 |
| Rom/Beam | Romford | 0.36 m (Low) | 0.29 | 1.75 | Rising | 20th May 2012 at 09:00 |
| Rookhope Burn | Eastgate | 0.10 m (Low) | 0.04 | 0.82 | Falling | 20th May 2012 at 18:15 |
| Rother (East Sussex) | Rye Harbour | 0.00 m (Very High) | 0.00 | 0.00 | Falling | 20th May 2012 at 15:30 |
| Rother (West Sussex) | Hardham | 0.00 m (Very Low) | 0.21 | 2.25 | Falling | 30th November -0001 at 00:00 |
| Rothley Brook | Rothley | 0.23 m (Low/Medium) | 0.15 | 0.44 | Falling | 20th May 2012 at 18:00 |
| Royal Military Canal Outflow Sea | Hundred House Bridge | 0.16 m (Low/Medium) | 0.00 | 0.43 | Falling | 20th May 2012 at 15:30 |
| Rye Meads Effluent Channel | Rye Meads | 0.31 m (Low) | 0.22 | 0.65 | Falling | 20th May 2012 at 15:30 |
| Rye Meads Effluent Channel | Rye Meads | 0.31 m (Low) | 0.22 | 0.65 | Falling | 20th May 2012 at 15:30 |
| Salfords Stream | Salfords Bridge | 0.31 m (Low) | 0.18 | 2.10 | Falling | 20th May 2012 at 15:30 |
| Salmon Brook | Enfield, The Chine | 1.02 m (Low/Medium) | 0.95 | 1.10 | Rising | 20th May 2012 at 09:00 |
| Salmon Brook | Edmonton Green | 0.13 m (Low) | 0.07 | 0.60 | Falling | 20th May 2012 at 15:30 |
| Salmon Brook | Enfield, The Chine | 1.02 m (Low/Medium) | 0.95 | 1.10 | Rising | 20th May 2012 at 09:00 |
| Salmon Brook | Edmonton Green | 0.13 m (Low) | 0.07 | 0.60 | Falling | 20th May 2012 at 15:30 |
| Salt Haven | Pevensey | 0.00 m (Very High) | 0.00 | 0.00 | Falling | 20th May 2012 at 15:45 |
| Sandon Brook | Sandon Bridge | 0.10 m (Low) | 0.04 | 0.75 | Falling | 20th May 2012 at 04:15 |
| Sankey Brook | Causey Bridge | 0.32 m (Low) | 0.21 | 2.20 | Falling | 20th May 2012 at 15:00 |
| Sankey Brook | Higham Avenue | 0.40 m (Low) | 0.11 | 2.34 | Rising | 20th May 2012 at 15:00 |
| Sankey Brook | Liverpool Road | 1.53 m (Low) | 1.10 | 3.50 | Rising | 20th May 2012 at 15:00 |
| Sawdde | Felin Y Cwm | 0.28 m (Low/Medium) | 0.15 | 0.63 | Falling | 20th May 2012 at 16:45 |
| Seacourt Stream | Minns Estate | 1.38 m (Low/Medium) | 1.01 | 1.81 | Rising | 20th May 2012 at 09:00 |
| Seiont | Peblic Mill | 0.44 m (Low) | 0.29 | 1.06 | Rising | 20th May 2012 at 16:45 |
| Semington Brook | Semington | 0.36 m (Low) | 0.27 | 2.00 | Rising | 20th May 2012 at 04:00 |
| Senni | Pont Hen Hafod | 0.24 m (Low/Medium) | 0.05 | 0.53 | Falling | 20th May 2012 at 16:45 |
| Severn | Newtown | 0.00 m (Very Low) | 0.19 | 1.05 | Falling | 30th November -0001 at 00:00 |
| Shaw Brook Tributary | Dryden Street | 0.23 m (Low) | 0.16 | 0.90 | Falling | 20th May 2012 at 15:00 |
| Shell Brook | Ardingly | 0.11 m (Low) | 0.02 | 0.80 | Falling | 20th May 2012 at 15:30 |
| Sherston Avon | Fosseway | 0.39 m (Medium) | 0.16 | 0.55 | Rising | 20th May 2012 at 04:00 |
| Shill Brook | Bampton | 0.00 m (Very Low) | 0.10 | 2.20 | Falling | 30th November -0001 at 00:00 |
| Shreen Water | Colesbrook | 0.16 m (Low) | 0.10 | 1.00 | Falling | 20th May 2012 at 04:00 |
| Shuttle Tributary Cray | Lamorbey Park | 0.33 m (Low) | 0.28 | 1.00 | Falling | 20th May 2012 at 15:30 |
| Silk Stream | Edgware Hospital | 0.64 m (Low) | 0.59 | 2.00 | Rising | 20th May 2012 at 09:00 |
| Silk Stream | Colindale | 0.13 m (Low) | 0.10 | 0.75 | Falling | 20th May 2012 at 15:30 |
| Silk Stream | Edgware Hospital | 0.64 m (Low) | 0.59 | 2.00 | Rising | 20th May 2012 at 09:00 |
| Silk Stream | Colindale | 0.13 m (Low) | 0.10 | 0.75 | Falling | 20th May 2012 at 15:30 |
| Sinderland Brk | Partington | 0.22 m (Low) | 0.11 | 0.80 | Falling | 20th May 2012 at 15:00 |
| Sirhowy | Ynysddu | 0.40 m (Low/Medium) | 0.25 | 0.75 | Rising | 20th May 2012 at 16:45 |
| Sirhowy | Nant Y Bwch | 0.10 m (Low) | 0.07 | 0.51 | Falling | 20th May 2012 at 16:45 |
| Slea | Leasingham Mill | 0.24 m (Low/Medium) | 0.04 | 0.55 | Falling | 20th May 2012 at 04:00 |
| Slea | Cranwell Line Sluice | 0.15 m (Medium/High) | 0.04 | 0.18 | Falling | 20th May 2012 at 03:45 |
| Slea | Slea Tilting Gate | 0.28 m (Low/Medium) | 0.24 | 0.38 | Falling | 20th May 2012 at 03:45 |
| Small River Lee | Cheshunt, Windmill Lane | 0.43 m (Low) | 0.36 | 1.80 | Rising | 20th May 2012 at 09:00 |
| Small River Lee | Enfield, Ordance Road | 0.17 m (Low) | 0.11 | 1.10 | Falling | 20th May 2012 at 15:30 |
| Small River Lee | Cheshunt, Windmill Lane | 0.43 m (Low) | 0.36 | 1.80 | Rising | 20th May 2012 at 09:00 |
| Small River Lee | Enfield, Ordance Road | 0.17 m (Low) | 0.11 | 1.10 | Falling | 20th May 2012 at 15:30 |
| Smallhope Burn | Lanchester Front Street | 0.28 m (Low) | 0.10 | 0.90 | Falling | 20th May 2012 at 18:15 |
| Smestow Brook | Swindon | 1.10 m (Low) | 1.04 | 1.34 | Rising | 20th May 2012 at 18:00 |
| Smestow Brook | Wightwick | 0.22 m (Low) | 0.20 | 0.41 | Falling | 20th May 2012 at 18:00 |
| Snaizeholme Beck | Low Houses | 0.16 m (Low) | 0.07 | 0.85 | Falling | 20th May 2012 at 18:15 |
| Solfach | Pont y Cerbyd | 0.46 m (Low) | 0.32 | 0.91 | Rising | 20th May 2012 at 16:45 |
| Solfach | Middle Mill | 0.29 m (Low/Medium) | 0.15 | 0.52 | Falling | 20th May 2012 at 16:45 |
| Somerset Frome | Witham Friary | 0.00 m (Very Low) | 0.09 | 0.60 | Falling | 30th November -0001 at 00:00 |
| Somerset Frome | Frome | 0.06 m (Low) | 0.04 | 1.20 | Falling | 20th May 2012 at 04:00 |
| Somerset Frome | Tellisford | 0.99 m (Low) | 0.53 | 3.20 | Rising | 20th May 2012 at 04:00 |
| Sor Brook | Bodicote | 0.18 m (Low/Medium) | 0.06 | 0.33 | Falling | 20th May 2012 at 15:45 |
| South Cornwall Coast | Newlyn | 0.00 m (Very High) | 0.00 | 0.00 | Falling | 20th May 2012 at 04:00 |
| South Devon Coast | Exmouth | 0.00 m (Very High) | 0.00 | 0.00 | Falling | 20th May 2012 at 04:15 |
| South Forty Foot | Swaton | 0.24 m (Low) | 0.15 | 1.45 | Falling | 20th May 2012 at 03:45 |
| South Forty Foot | Billingborough Ousemere | 0.14 m (Low) | 0.08 | 1.60 | Falling | 20th May 2012 at 04:00 |
| South Forty Foot | Rippingale | 0.52 m (Medium) | 0.07 | 0.96 | Rising | 20th May 2012 at 05:30 |
| South Forty Foot | Donington Bridge | 1.00 m (Low/Medium) | 0.08 | 2.59 | Rising | 30th November -0001 at 00:00 |
| Southcourt Brook - Upstream | Churchill Avenue | 0.62 m (Low) | 0.58 | 0.77 | Rising | 20th May 2012 at 09:00 |
| Spen Beck | Northorpe | 0.07 m (Low) | 0.04 | 0.50 | Falling | 20th May 2012 at 18:00 |
| Spodden | Shawclough | 0.03 m (Very Low) | 0.05 | 0.39 | Falling | 20th May 2012 at 15:00 |
| Spodden | Whitworth | 0.00 m (Very Low) | 0.14 | 0.33 | Falling | 30th November -0001 at 00:00 |
| Sprint | Sprint Mill, Kendal | 0.23 m (Low) | 0.13 | 1.20 | Falling | 20th May 2012 at 15:00 |
| St Austell River | Molingey | 0.65 m (Low/Medium) | 0.59 | 0.82 | Rising | 20th May 2012 at 04:15 |
| St James Stream | Upper Elmers End | 0.23 m (Low/Medium) | 0.02 | 0.86 | Falling | 20th May 2012 at 15:30 |
| St James Stream | Upper Elmers End | 0.23 m (Low/Medium) | 0.02 | 0.86 | Falling | 20th May 2012 at 15:30 |
| St Johns Beck | Thirlmere | 0.13 m (Low) | 0.11 | 1.50 | Falling | 20th May 2012 at 15:00 |
| St Neot River | Craigshill Wood | 0.23 m (Low) | 0.18 | 0.40 | Falling | 20th May 2012 at 04:00 |
| Stainfield Beck | Stainfield Beck | 0.14 m (Low) | 0.03 | 0.69 | Falling | 20th May 2012 at 06:00 |
| Stansted Brook | Stanstead Mountfitchet, Gypsy Lane | 0.10 m (Low) | 0.06 | 0.67 | Falling | 20th May 2012 at 15:45 |
| Stert | Abingdon | 0.60 m (Low/Medium) | 0.05 | 1.70 | Rising | 20th May 2012 at 09:00 |
| Stevenage Brook | Bragbury Park | 0.07 m (Low) | 0.05 | 0.65 | Falling | 20th May 2012 at 15:30 |
| Stort | Clavering | 0.26 m (Low) | 0.03 | 1.05 | Falling | 20th May 2012 at 09:00 |
| Stort | Bishops Stortford, Grange Paddocks | 0.23 m (Low/Medium) | 0.06 | 0.57 | Falling | 20th May 2012 at 09:00 |
| Stort | Sawbridgeworth | 1.17 m (Low/Medium) | 0.96 | 1.80 | Rising | 20th May 2012 at 09:00 |
| Stort | Harlow Mill | 0.96 m (Low) | 0.84 | 1.58 | Rising | 20th May 2012 at 09:00 |
| Stort | Roydon, Glen Faba | 1.42 m (Low/Medium) | 1.33 | 1.60 | Rising | 20th May 2012 at 15:30 |
| Stort | Roydon, Glen Faba | 1.42 m (Low/Medium) | 1.33 | 1.60 | Rising | 20th May 2012 at 15:30 |
| Stour Brook | Sturmer | 0.10 m (Low) | 0.06 | 0.95 | Falling | 20th May 2012 at 04:15 |
| Sud Brook | Matson Place | 0.00 m (Very Low) | 0.23 | 0.46 | Falling | 30th November -0001 at 00:00 |
| Swan Brook | Swanage King Georges Field St Marys Church | 0.08 m (Very High) | 0.00 | 0.00 | Falling | 20th May 2012 at 04:00 |
| Swan Brook | Swanage Prospect Farm Swan Brook | 0.12 m (Very High) | 0.00 | 0.00 | Falling | 20th May 2012 at 04:00 |
| Swavesey Drain | Webbs Hole Sluice | 1.01 m (Medium/High) | 0.26 | 1.20 | Rising | 20th May 2012 at 19:00 |
| Swill Brook - Upstream | Oaksey | 0.54 m (Low/Medium) | 0.00 | 1.31 | Rising | 20th May 2012 at 09:00 |
| Swinney Beck | Masham, Swinney Beck | 0.30 m (Low) | 0.15 | 0.85 | Falling | 20th May 2012 at 18:15 |
| Sydling Water | Sydling St Nicholas | 0.17 m (Medium) | 0.07 | 0.25 | Falling | 20th May 2012 at 04:00 |
| Taf | Login | 0.94 m (Low) | 0.79 | 1.41 | Rising | 20th May 2012 at 16:45 |
| Taf | Clog Y Fran | 1.17 m (Low/Medium) | 0.74 | 2.02 | Rising | 20th May 2012 at 16:45 |
| Taff | Troedyrhiw | 0.25 m (Low) | 0.14 | 1.03 | Falling | 20th May 2012 at 16:45 |
| Taff | Pontypridd | 0.59 m (Low) | 0.39 | 1.33 | Rising | 20th May 2012 at 16:45 |
| Taff | Merthyr Tydfil | 0.27 m (Low) | 0.23 | 0.78 | Falling | 20th May 2012 at 16:45 |
| Taff | Western Avenue | 0.75 m (Low) | 0.55 | 1.64 | Rising | 20th May 2012 at 16:45 |
| Taff | Penarth Road Bridge | 2.58 m (Medium) | 0.26 | 3.50 | Rising | 20th May 2012 at 16:45 |
| Taff | Fiddlers Elbow | 0.42 m (Low) | 0.28 | 0.92 | Rising | 20th May 2012 at 16:45 |
| Tamar | Tamarstone Bridge | 0.24 m (Low) | 0.06 | 1.35 | Falling | 20th May 2012 at 06:15 |
| Tamar | Bridge Rule | 0.28 m (Low) | 0.00 | 1.70 | Falling | 20th May 2012 at 06:00 |
| Tamar | Devonport Tide | 0.00 m (Very High) | 0.00 | 0.00 | Falling | 20th May 2012 at 04:00 |
| Tame | Broomstairs Bridge | 0.27 m (Low) | 0.17 | 0.85 | Falling | 20th May 2012 at 15:00 |
| Tame | Portwood | 0.14 m (Low) | 0.08 | 0.40 | Falling | 20th May 2012 at 15:00 |
| Tame | Uppermill | 0.07 m (Low) | 0.04 | 0.24 | Falling | 20th May 2012 at 15:00 |
| Tanners Brook | Millbrook | 0.09 m (Low) | 0.03 | 0.50 | Falling | 20th May 2012 at 15:30 |
| Tavy | Tavistock | 0.90 m (Low) | 0.78 | 1.53 | Rising | 20th May 2012 at 06:15 |
| Tawe | Ynystanglws | 0.52 m (Low) | 0.37 | 1.44 | Rising | 20th May 2012 at 16:45 |
| Tawe | Morfa | 3.22 m (Low) | 3.13 | 3.93 | Rising | 20th May 2012 at 16:45 |
| Tawe | Craig y Nos | 0.35 m (Low) | 0.22 | 0.83 | Falling | 20th May 2012 at 16:45 |
| Teifi | Pont Llanio | 0.96 m (Low/Medium) | 0.58 | 1.67 | Rising | 20th May 2012 at 16:45 |
| Teifi | Llanfair | 0.51 m (Low) | 0.22 | 1.43 | Rising | 20th May 2012 at 16:45 |
| Teifi | Glan Teifi | 0.95 m (Low) | 0.63 | 2.29 | Rising | 20th May 2012 at 16:45 |
| Teifi | Pontrydfendigaid | 1.00 m (Very High) | 0.33 | 0.84 | Rising | 20th May 2012 at 16:45 |
| Teise | Lamberhurst | 0.12 m (Low) | 0.01 | 1.50 | Falling | 20th May 2012 at 15:30 |
| Teise | Stonebridge | 0.30 m (Low) | 0.08 | 2.50 | Falling | 20th May 2012 at 15:30 |
| Tetbury Avon | Brokenborough | 0.35 m (Medium) | 0.13 | 0.50 | Rising | 20th May 2012 at 04:00 |
| Thame | Rowsham Bridge | 0.14 m (Low) | 0.07 | 1.11 | Falling | 20th May 2012 at 15:45 |
| Thame | Aylesbury Thame | 2.32 m (Very High) | 0.41 | 1.58 | Rising | 20th May 2012 at 09:00 |
| Thame | Cuddington | 1.20 m (Low/Medium) | 0.98 | 1.80 | Rising | 20th May 2012 at 09:00 |
| Thame | Thame Bridge | 1.41 m (Low/Medium) | 1.06 | 2.37 | Rising | 20th May 2012 at 09:00 |
| Thame | Wheatley | 4.07 m (Low/Medium) | 3.60 | 5.24 | Rising | 20th May 2012 at 15:45 |
| Thame | Stadhampton | 1.01 m (Low/Medium) | 0.57 | 2.00 | Rising | 20th May 2012 at 09:00 |
| Thames | Ewen | 0.79 m (Very High) | 0.00 | 0.73 | Rising | 20th May 2012 at 09:00 |
| Thames | Somerford Keynes | 1.29 m (Medium/High) | 0.36 | 1.40 | Rising | 20th May 2012 at 15:45 |
| Thames | Cricklade | 0.61 m (Medium) | 0.06 | 0.88 | Rising | 20th May 2012 at 09:00 |
| Thames | Hannington Bridge | 2.93 m (Medium) | 2.07 | 3.76 | Rising | 20th May 2012 at 21:30 |
| Thames | Farmoor | 0.91 m (Medium/High) | 0.00 | 1.08 | Rising | 20th May 2012 at 21:30 |
| Thames | Reading | 6.65 m (Low/Medium) | 6.58 | 6.79 | Rising | 20th May 2012 at 21:30 |
| Thames | Sutton Courtenay | 2.21 m (Low/Medium) | 1.91 | 3.01 | Rising | 20th May 2012 at 21:30 |
| Thames | Maidenhead | 2.50 m (Low) | 2.27 | 3.25 | Rising | 20th May 2012 at 09:00 |
| Thames | Windsor Park | 3.35 m (Low) | 3.22 | 4.10 | Rising | 20th May 2012 at 21:30 |
| Thames | Kingston | 4.57 m (Medium) | 3.49 | 5.00 | Rising | 20th May 2012 at 21:30 |
| Thames | Trowlock Island | 4.58 m (Low/Medium) | 4.42 | 4.85 | Rising | 20th May 2012 at 09:00 |
| Thames | Walton | 3.36 m (Medium/High) | 3.17 | 3.41 | Rising | 20th May 2012 at 21:30 |
| Thames | Thames Ditton Island | 4.65 m (Low) | 4.46 | 5.50 | Rising | 20th May 2012 at 09:00 |
| Thames | Staines | 2.81 m (Low) | 2.70 | 4.10 | Rising | 20th May 2012 at 21:30 |
| Thames - Upstream | St Johns Lock | 0.07 m (Low/Medium) | 0.00 | 0.23 | Falling | 20th May 2012 at 21:30 |
| Thames - Upstream | Buscot Lock | 0.10 m (Low/Medium) | 0.00 | 0.22 | Falling | 20th May 2012 at 21:30 |
| Thames - Upstream | Rushey Lock | 0.13 m (Low/Medium) | 0.01 | 0.30 | Falling | 20th May 2012 at 21:30 |
| Thames - Upstream | Northmoor Lock | 0.13 m (Low/Medium) | 0.00 | 0.38 | Falling | 20th May 2012 at 21:30 |
| Thames - Upstream | Pinkhill Lock | 0.14 m (Low/Medium) | 0.00 | 0.29 | Falling | 20th May 2012 at 21:30 |
| Thames - Upstream | Iffley Lock | 0.13 m (Medium) | 0.00 | 0.22 | Falling | 20th May 2012 at 21:30 |
| Thames - Upstream | Abingdon Lock | 0.09 m (Medium) | 0.00 | 0.17 | Falling | 20th May 2012 at 21:30 |
| Thames - Upstream | Culham Lock | 0.15 m (Low/Medium) | 0.04 | 0.30 | Falling | 20th May 2012 at 21:30 |
| Thames - Upstream | Clifton Lock | 0.21 m (Low) | 0.00 | 0.85 | Falling | 20th May 2012 at 21:30 |
| Thames - Upstream | Days Lock | 0.13 m (Low/Medium) | 0.00 | 0.27 | Falling | 20th May 2012 at 21:30 |
| Thames - Upstream | Cleeve Lock | 0.09 m (Medium) | 0.00 | 0.15 | Falling | 20th May 2012 at 21:30 |
| Thames - Upstream | Goring | 0.15 m (Medium) | 0.05 | 0.22 | Falling | 20th May 2012 at 21:30 |
| Thames - Upstream | Marlow Lock | 0.11 m (Low) | 0.06 | 0.45 | Falling | 20th May 2012 at 21:30 |
| Thames - Upstream | Whitchurch Lock | 0.13 m (Medium/High) | 0.01 | 0.16 | Falling | 20th May 2012 at 21:30 |
| Thames - Upstream | Grafton Lock | 0.07 m (Low) | 0.00 | 0.40 | Falling | 20th May 2012 at 21:30 |
| Thames - Upstream | Radcot Lock | 0.09 m (Low/Medium) | 0.00 | 0.32 | Falling | 20th May 2012 at 21:30 |
| Thames - Upstream | Eynsham Lock | 0.14 m (Low/Medium) | 0.04 | 0.37 | Falling | 20th May 2012 at 21:30 |
| Thames - Upstream | Kings Lock | 0.17 m (Medium) | 0.00 | 0.26 | Falling | 20th May 2012 at 21:30 |
| Thames - Upstream | Osney Lock | 0.00 m (Low) | 0.00 | 0.09 | Falling | 20th May 2012 at 21:30 |
| Thames - Upstream | Benson Lock | 0.09 m (Low) | 0.04 | 0.31 | Falling | 20th May 2012 at 21:30 |
| Thames - Upstream | Mapledurham Lock | 0.12 m (Medium) | 0.02 | 0.21 | Falling | 20th May 2012 at 21:30 |
| Thames - Upstream | Sonning Lock | 0.15 m (Low/Medium) | 0.07 | 0.26 | Falling | 20th May 2012 at 21:30 |
| Thames - Upstream | Caversham Lock | 0.16 m (Low/Medium) | 0.07 | 0.27 | Falling | 20th May 2012 at 21:30 |
| Thames - Upstream | Marsh Lock | 0.22 m (Low/Medium) | 0.11 | 0.38 | Falling | 20th May 2012 at 21:30 |
| Thames - Upstream | Hurley Lock | 0.04 m (Low) | 0.02 | 0.16 | Falling | 20th May 2012 at 21:30 |
| Thames - Upstream | Cookham Lock | 0.07 m (Low) | 0.00 | 0.43 | Falling | 20th May 2012 at 21:30 |
| Thames - Upstream | Boulters Lock | 0.14 m (Low/Medium) | 0.07 | 0.27 | Falling | 20th May 2012 at 21:30 |
| Thames - Upstream | Bray Lock | 0.32 m (Very High) | 0.10 | 0.31 | Falling | 20th May 2012 at 21:30 |
| Thames - Upstream | Romney Lock | 0.23 m (Medium) | 0.10 | 0.30 | Falling | 20th May 2012 at 21:30 |
| Thames - Upstream | Old Windsor Lock | 0.17 m (Low/Medium) | 0.10 | 0.35 | Falling | 20th May 2012 at 21:30 |
| Thames - Upstream | Penton Hook | 0.23 m (Medium) | 0.08 | 0.29 | Falling | 20th May 2012 at 21:30 |
| Thames - Upstream | Chertsey Lock | 0.20 m (Low/Medium) | 0.13 | 0.40 | Falling | 20th May 2012 at 21:30 |
| Thames - Upstream | Shepperton Lock | 0.25 m (Medium/High) | 0.08 | 0.28 | Falling | 20th May 2012 at 21:30 |
| Thames - Upstream | Sunbury Lock | 0.24 m (Medium/High) | 0.06 | 0.27 | Falling | 20th May 2012 at 21:30 |
| Thames - Upstream | Bell Weir | 0.15 m (Low/Medium) | 0.08 | 0.27 | Falling | 20th May 2012 at 21:30 |
| Thames - Upstream | Molesey Lock | 0.22 m (Medium) | 0.05 | 0.30 | Falling | 20th May 2012 at 21:30 |
| Thames Tideway | Westminster | 0.00 m (Very High) | 0.00 | 0.00 | Falling | 20th May 2012 at 21:45 |
| Thames Tideway | Charlton | 0.00 m (Very High) | 0.00 | 0.00 | Falling | 20th May 2012 at 21:45 |
| Thames Tideway | Tower Pier | 0.00 m (Very High) | 0.00 | 0.00 | Falling | 20th May 2012 at 21:45 |
| Thames Tideway | Chelsea | 0.00 m (Very High) | 0.00 | 0.00 | Falling | 20th May 2012 at 21:45 |
| Thames Tideway | Richmond | 0.00 m (Very High) | 0.00 | 0.00 | Falling | 20th May 2012 at 21:45 |
| Thames Tideway | Silvertown | 0.00 m (Very High) | 0.00 | 0.00 | Falling | 20th May 2012 at 22:00 |
| Thames Tideway | Tilbury | 0.00 m (Very High) | 0.00 | 0.00 | Falling | 20th May 2012 at 22:00 |
| Thames Tideway | Westminster | 0.00 m (Very High) | 0.00 | 0.00 | Falling | 20th May 2012 at 22:00 |
| Thames Tideway | Charlton | 0.00 m (Very High) | 0.00 | 0.00 | Falling | 20th May 2012 at 21:45 |
| Thames Tideway | Tower Pier | 0.00 m (Very High) | 0.00 | 0.00 | Falling | 20th May 2012 at 21:45 |
| Thames Tideway | Chelsea | 0.00 m (Very High) | 0.00 | 0.00 | Falling | 20th May 2012 at 21:45 |
| Thames Tideway | Richmond | 0.00 m (Very High) | 0.00 | 0.00 | Falling | 20th May 2012 at 22:00 |
| Thames Tideway | Southend | 0.00 m (Very High) | 0.00 | 0.00 | Falling | 20th May 2012 at 22:00 |
| The Beck | Beckenham | 0.49 m (Low) | 0.42 | 0.85 | Rising | 20th May 2012 at 15:30 |
| The Beck | Beckenham | 0.49 m (Low) | 0.42 | 0.85 | Rising | 20th May 2012 at 15:30 |
| The Cut | Binfield | 0.17 m (Low) | 0.13 | 0.93 | Falling | 20th May 2012 at 15:45 |
| The Cut | The Bighams | 0.84 m (Low) | 0.78 | 1.50 | Rising | 20th May 2012 at 09:00 |
| The Gissage | Honiton | 0.06 m (Low) | 0.03 | 0.36 | Falling | 20th May 2012 at 04:15 |
| The Roxbourne | Harrow, Thistledene Avenue | 0.03 m (Low) | 0.02 | 0.70 | Falling | 20th May 2012 at 09:00 |
| The Roxbourne | Harrow, Thistledene Avenue | 0.03 m (Low) | 0.02 | 0.70 | Falling | 20th May 2012 at 09:00 |
| Theobalds Brook | Cheshunt, Trinity Lane | 0.41 m (Low) | 0.40 | 0.90 | Rising | 20th May 2012 at 09:00 |
| Theobalds Brook | Cheshunt, Trinity Lane | 0.41 m (Low) | 0.40 | 0.90 | Rising | 20th May 2012 at 09:00 |
| Tidal River Waveney | Burgh Castle | 1.03 m (Medium) | 0.42 | 1.58 | Rising | 20th May 2012 at 06:30 |
| Tidal River Waveney | Burgh St Peter | 0.07 m (Low) | -0.30 | 1.30 | Falling | 20th May 2012 at 04:15 |
| Tidal River Waveney | Haddiscoe | 0.22 m (Low) | 0.18 | 1.39 | Falling | 20th May 2012 at 04:15 |
| Tide | Medmerry | 0.00 m (Very High) | 0.00 | 0.00 | Falling | 20th May 2012 at 15:30 |
| Till | Squires Bridge | 0.89 m (Low) | 0.84 | 2.87 | Rising | 20th May 2012 at 05:30 |
| Tory Brook | Lee Moor | 0.28 m (Low/Medium) | 0.15 | 0.45 | Falling | 20th May 2012 at 04:15 |
| Tory Brook | Newnham Park | 0.39 m (Low) | 0.31 | 0.65 | Rising | 20th May 2012 at 04:00 |
| Tresillian River | Ladock | 0.14 m (Low/Medium) | 0.03 | 0.33 | Falling | 20th May 2012 at 04:00 |
| Trothy | Mitchel Troy | 0.39 m (Low/Medium) | 0.16 | 0.99 | Rising | 20th May 2012 at 16:45 |
| Trothy | Mitchel Troy | 0.39 m (Low/Medium) | 0.16 | 0.99 | Rising | 20th May 2012 at 16:45 |
| Trout Beck | Moorhouse | 0.13 m (Low) | 0.05 | 0.80 | Falling | 20th May 2012 at 18:15 |
| Turkey Brook | Enfield, Bulls Cross | 0.39 m (Low) | 0.31 | 0.96 | Rising | 20th May 2012 at 09:00 |
| Turkey Brook | Enfield, Albany Park | 0.09 m (Low) | 0.05 | 1.10 | Falling | 20th May 2012 at 15:30 |
| Turkey Brook | Enfield, Bulls Cross | 0.39 m (Low) | 0.31 | 0.96 | Rising | 20th May 2012 at 09:00 |
| Turkey Brook | Enfield, Albany Park | 0.09 m (Low) | 0.05 | 1.10 | Falling | 20th May 2012 at 15:30 |
| Tweed | Berwick | 0.00 m (Very High) | 0.00 | 0.00 | Falling | 20th May 2012 at 20:00 |
| Twin | Bourton Grounds | 0.30 m (Low/Medium) | 0.08 | 0.61 | Falling | 20th May 2012 at 05:30 |
| Twrch | Gurnos | 0.40 m (Low) | 0.33 | 0.77 | Rising | 20th May 2012 at 16:45 |
| Twrch | Ddol Las | 0.36 m (Low) | 0.28 | 0.71 | Rising | 20th May 2012 at 16:45 |
| Twyi | Pothouse Wharf | 0.00 m (Very High) | 0.00 | 0.00 | Rising | 30th November -0001 at 00:00 |
| Twyver | Abbeymead Avenue | 1.00 m (Very High) | 0.00 | 0.00 | Rising | 30th November -0001 at 00:00 |
| Tyweli | Llandysul | 0.49 m (Very High) | 0.00 | 0.39 | Rising | 20th May 2012 at 16:45 |
| Tywi | Ystradffin | 0.12 m (Low) | 0.09 | 0.46 | Falling | 20th May 2012 at 16:45 |
| Tywi | Ty Castell | 0.97 m (Low) | 0.70 | 2.79 | Rising | 20th May 2012 at 16:45 |
| Tywi | Manorafan | 0.00 m (Very Low) | 0.88 | 2.21 | Falling | 20th May 2012 at 16:45 |
| Tywi | Dolau Hirion | 0.37 m (Low) | 0.32 | 0.89 | Rising | 20th May 2012 at 16:45 |
| Tywi | Capel Dewi | 0.92 m (Low) | 0.58 | 2.43 | Rising | 20th May 2012 at 16:45 |
| Uck | Buxted | 0.16 m (Low) | 0.11 | 1.40 | Falling | 20th May 2012 at 15:30 |
| Uck | Isfield weir | 0.30 m (Low) | 0.05 | 1.50 | Falling | 18th May 2012 at 12:30 |
| Uck | Uckfield Mill upstream | 0.36 m (Low) | 0.30 | 1.30 | Rising | 20th May 2012 at 10:30 |
| Umborne Brook | Wilmington | 0.21 m (Low) | 0.19 | 0.48 | Falling | 20th May 2012 at 09:00 |
| Upper Clydach | Pontardawe | 0.13 m (Very Low) | 0.17 | 0.70 | Falling | 20th May 2012 at 16:45 |
| Upper Witham | Colsterworth | 0.17 m (Low) | 0.08 | 0.77 | Falling | 20th May 2012 at 04:15 |
| Upper Witham | Saltersford | 0.34 m (Low/Medium) | 0.11 | 0.70 | Falling | 20th May 2012 at 17:15 |
| Upper Witham - North | North Hykeham | 0.29 m (Low) | 0.16 | 2.11 | Falling | 20th May 2012 at 06:30 |
| Upper Witham - South | Claypole | 0.24 m (Low/Medium) | 0.11 | 0.62 | Falling | 20th May 2012 at 06:00 |
| Upper Witham - South | Hougham | 0.86 m (Low) | 0.71 | 1.69 | Rising | 19th May 2012 at 04:15 |
| Usk | Usk Reservoir | 0.08 m (Low) | 0.06 | 0.40 | Falling | 20th May 2012 at 16:45 |
| Usk | Trallong | 0.39 m (Low) | 0.24 | 0.98 | Rising | 20th May 2012 at 16:45 |
| Usk | Llandetty | 0.78 m (Low/Medium) | 0.46 | 1.68 | Rising | 20th May 2012 at 16:45 |
| Usk | Trostrey Weir | 0.49 m (Low/Medium) | 0.18 | 1.11 | Rising | 20th May 2012 at 16:45 |
| Usk | Crickhowell | 0.31 m (Low/Medium) | 0.00 | 0.65 | Falling | 20th May 2012 at 16:45 |
| Usk | Chainbridge | 0.81 m (Low/Medium) | 0.40 | 1.95 | Rising | 20th May 2012 at 16:45 |
| Usk | Usk Town | 0.55 m (Low/Medium) | 0.08 | 1.29 | Rising | 20th May 2012 at 16:45 |
| Valley Brook | Marshfield Bridge | 0.35 m (Medium) | 0.17 | 0.50 | Rising | 20th May 2012 at 15:00 |
| Ver - Upstream | Markyate | 0.00 m (Low) | 0.00 | 0.88 | Falling | 20th May 2012 at 09:00 |
| Ver - Upstream | Redbourn River Ver | 0.04 m (Low/Medium) | -0.10 | 0.40 | Falling | 20th May 2012 at 15:30 |
| Waithe Beck | Brigsley | 0.17 m (Low) | 0.07 | 0.60 | Falling | 19th May 2012 at 08:00 |
| Wallington | North Fareham weir | 0.18 m (Low) | 0.08 | 1.39 | Falling | 20th May 2012 at 15:30 |
| Wandle | Beddington Park | 0.25 m (Low) | 0.07 | 1.40 | Falling | 20th May 2012 at 15:30 |
| Wandle | Carshalton Ponds | 0.06 m (Low) | 0.05 | 0.43 | Falling | 20th May 2012 at 15:30 |
| Wandle | Hackbridge | 1.38 m (Low/Medium) | 1.27 | 1.51 | Rising | 20th May 2012 at 15:30 |
| Wandle | Summerstown | 0.98 m (Low) | 0.85 | 3.30 | Rising | 25th April 2012 at 10:15 |
| Wandle | Beddington Park | 0.25 m (Low) | 0.07 | 1.40 | Falling | 20th May 2012 at 15:30 |
| Wandle | Carshalton Ponds | 0.06 m (Low) | 0.05 | 0.43 | Falling | 20th May 2012 at 15:30 |
| Wandle | Hackbridge | 1.38 m (Low/Medium) | 1.27 | 1.51 | Rising | 20th May 2012 at 15:30 |
| Wandle | Summerstown | 0.98 m (Low) | 0.85 | 3.30 | Rising | 25th April 2012 at 10:15 |
| Waring | Horncastle Banks Road | 0.20 m (Low/Medium) | 0.03 | 0.68 | Falling | 19th May 2012 at 11:15 |
| Warleggan River | Trengoffe | 0.34 m (Medium) | 0.18 | 0.46 | Falling | 20th May 2012 at 04:00 |
| Washford River | Beggearn Huish | 0.33 m (Low/Medium) | 0.15 | 0.80 | Falling | 20th May 2012 at 04:15 |
| Wealdstone Brook | Kenton Lane | 0.16 m (Low) | 0.11 | 0.75 | Falling | 20th May 2012 at 15:30 |
| Wealdstone Brook | Wembley | 0.07 m (Low) | 0.07 | 1.80 | Falling | 20th May 2012 at 15:30 |
| Wealdstone Brook | Kenton Lane | 0.16 m (Low) | 0.11 | 0.75 | Falling | 20th May 2012 at 15:30 |
| Weaver | Ashbrook | 0.46 m (Low) | 0.30 | 2.60 | Rising | 20th May 2012 at 15:00 |
| Weaver | Audlem | 0.30 m (Low) | 0.12 | 1.70 | Falling | 20th May 2012 at 15:00 |
| Weedon Beck | Weedon | 0.04 m (Low) | 0.00 | 0.18 | Falling | 20th May 2012 at 05:15 |
| Welland (Mkt.Harborough - Rockingham) | Ashley | 0.12 m (Low) | 0.03 | 2.08 | Falling | 20th May 2012 at 06:30 |
| Welland (Rockingham - Stamford) | Tixover | 0.30 m (Low) | 0.15 | 2.35 | Falling | 20th May 2012 at 16:15 |
| Welland (Stamford - Peakirk) | Tallington | 0.21 m (Low) | 0.14 | 1.07 | Falling | 20th May 2012 at 06:30 |
| Welland (Stamford-Peakirk) | Hudds Mill | 0.15 m (Low/Medium) | 0.00 | 0.34 | Falling | 20th May 2012 at 06:00 |
| Welland (To Mkt.Harborough) | Market Harborough | 0.07 m (Low) | 0.02 | 0.84 | Falling | 20th May 2012 at 06:30 |
| Welland Below Peakirk | Fosdyke Bridge | 1.52 m (Low/Medium) | 0.00 | 5.00 | Rising | 20th May 2012 at 03:45 |
| Welland Below Peakirk | Marsh Road Sluice | 1.38 m (Medium/High) | 0.95 | 1.45 | Rising | 20th May 2012 at 17:15 |
| Welland Below Peakirk | Market Deeping | 0.14 m (Medium) | 0.04 | 0.19 | Falling | 20th May 2012 at 06:00 |
| Welland Below Peakirk | Deeping St James | 1.00 m (Low/Medium) | 0.94 | 1.15 | Rising | 30th November -0001 at 00:00 |
| Wellow Brook | Wellow | 0.70 m (Low/Medium) | 0.34 | 1.10 | Rising | 20th May 2012 at 04:00 |
| Wellow Brook | Welton | 0.05 m (Low) | 0.00 | 0.70 | Falling | 20th May 2012 at 04:00 |
| Wendlebury Brook | Wendlebury | 1.10 m (Low/Medium) | 0.93 | 1.38 | Rising | 20th May 2012 at 09:00 |
| Wendling Beck | Wendling Beck | 0.22 m (Low) | 0.00 | 1.80 | Falling | 20th May 2012 at 06:30 |
| Wendover Springs | Weston Turville | 0.28 m (Very Low) | 0.29 | 0.36 | Falling | 20th May 2012 at 09:00 |
| Wenning | Bentham Bridge | 0.45 m (Low) | 0.40 | 1.60 | Rising | 20th May 2012 at 15:00 |
| Wenning | Hornby | 0.35 m (Low) | 0.20 | 1.40 | Rising | 20th May 2012 at 15:00 |
| Wenning | Wennington | 0.29 m (Low) | 0.16 | 0.79 | Falling | 20th May 2012 at 15:00 |
| Wesley Brook | Shifnal | 0.00 m (Very Low) | 0.12 | 0.24 | Falling | 30th November -0001 at 00:00 |
| West Dart River | Dunnabridge | 0.36 m (Low) | 0.25 | 0.88 | Rising | 20th May 2012 at 04:00 |
| West Dart River | Dartmoor Training Camp | 0.20 m (Low) | 0.07 | 0.69 | Falling | 20th May 2012 at 09:00 |
| West Fen Catchwater | New York | 0.97 m (Medium/High) | 0.09 | 1.10 | Rising | 20th May 2012 at 05:15 |
| West Fen Catchwater | Revesby | 1.07 m (Medium) | 0.09 | 2.05 | Rising | 20th May 2012 at 05:30 |
| West Glen (To Kates Bridge) | Burton Coggles | 0.08 m (Low) | 0.04 | 0.98 | Falling | 20th May 2012 at 06:30 |
| West Glen (To Kates Bridge) | Shillingthorpe | 0.07 m (Low) | 0.05 | 1.32 | Falling | 20th May 2012 at 06:00 |
| West Glen (To Kates Bridge) | Little Bytham | 0.02 m (Low) | 0.01 | 0.44 | Falling | 20th May 2012 at 05:30 |
| West Glen (To Kates Bridge) | Castle Bytham | 0.14 m (Low) | 0.01 | 0.99 | Falling | 20th May 2012 at 04:00 |
| West Okement River | Vellake | 0.29 m (Low/Medium) | 0.15 | 0.65 | Falling | 20th May 2012 at 08:00 |
| West Sedgemoor Drain | West Sedgemoor | 2.33 m (Medium) | 0.12 | 3.47 | Rising | 20th May 2012 at 21:00 |
| Western Cleddau | Prendergast Mill | 1.06 m (Low/Medium) | 0.66 | 1.58 | Rising | 20th May 2012 at 16:45 |
| Western Cleddau | Haverfordwest | 0.57 m (Low/Medium) | 0.41 | 0.94 | Rising | 20th May 2012 at 16:45 |
| Wey | Kings Pond | 0.12 m (Low/Medium) | 0.00 | 0.40 | Falling | 20th May 2012 at 09:00 |
| Wey | Farnham | 0.11 m (Low) | 0.05 | 0.82 | Falling | 20th May 2012 at 15:45 |
| Wey | Passfield Mill | 0.85 m (Low) | 0.80 | 1.20 | Rising | 20th May 2012 at 09:00 |
| Wey | Tilford | 0.22 m (Low) | 0.14 | 1.00 | Falling | 20th May 2012 at 15:45 |
| Wey | Westbrook Mill | 2.09 m (Medium) | 1.75 | 2.34 | Rising | 20th May 2012 at 09:00 |
| Wey | Guildford | 1.24 m (Low) | 1.10 | 2.45 | Rising | 20th May 2012 at 15:45 |
| Wey | Brooklands | 0.42 m (Low) | 0.24 | 2.30 | Rising | 20th May 2012 at 09:00 |
| Wey | Weybridge | 1.07 m (Low/Medium) | 0.96 | 1.30 | Rising | 20th May 2012 at 21:30 |
| Wheeler | Bodfari | 0.26 m (Medium) | 0.12 | 0.40 | Falling | 20th May 2012 at 16:45 |
| Whetstone Brook | Whetstone | 0.15 m (Low/Medium) | 0.09 | 0.31 | Falling | 20th May 2012 at 18:00 |
| White Water Dyke Tributary East Stour | White Water Dyke | 0.02 m (Low) | 0.01 | 0.34 | Falling | 20th May 2012 at 15:30 |
| Whitewater | Lodge Farm | 0.23 m (Medium) | 0.10 | 0.35 | Falling | 20th May 2012 at 15:45 |
| Willow Beck | Northallerton | 0.31 m (Low) | 0.23 | 1.00 | Falling | 20th May 2012 at 18:15 |
| Willow Brook | Fotheringhay | 0.15 m (Low) | 0.12 | 0.50 | Falling | 20th May 2012 at 06:15 |
| Willow Brook | Weldon Flood Storage Reservoir | 0.02 m (Low) | 0.00 | 3.64 | Falling | 20th May 2012 at 04:15 |
| Wincham Brook | Lostock Gralam | 0.75 m (Medium) | 0.20 | 1.24 | Rising | 20th May 2012 at 15:00 |
| Windle Brook | Bagshot | 0.56 m (Low/Medium) | 0.40 | 1.00 | Rising | 20th May 2012 at 09:00 |
| Windrush | Bourton Windrush | 0.17 m (Medium) | 0.08 | 0.23 | Falling | 20th May 2012 at 15:45 |
| Windrush | Worsham | 0.61 m (Medium) | 0.30 | 0.88 | Rising | 20th May 2012 at 15:45 |
| Windrush | Witney | 0.95 m (Medium) | 0.52 | 1.19 | Rising | 20th May 2012 at 09:00 |
| Windrush | Newbridge Weir B | 0.21 m (Medium) | 0.00 | 0.35 | Falling | 20th May 2012 at 15:45 |
| Windrush | Newbridge Weir A | 0.32 m (Medium) | 0.13 | 0.41 | Falling | 20th May 2012 at 15:45 |
| Winterbourne Stream | Bagnor | 0.06 m (Low) | 0.04 | 0.17 | Falling | 20th May 2012 at 09:00 |
| Wissey | Wissey Sluice | 1.77 m (Low/Medium) | 1.62 | 2.04 | Rising | 20th May 2012 at 06:30 |
| Witham | Boygrift | 0.00 m (Very High) | 0.00 | 0.00 | Falling | 20th May 2012 at 03:45 |
| Witham | Kirkstead Bridge | 0.74 m (Low) | 0.16 | 2.90 | Rising | 20th May 2012 at 04:15 |
| Witham | Langrick Bridge | 1.30 m (Medium/High) | 0.52 | 1.44 | Rising | 20th May 2012 at 06:15 |
| Witham | Stamp End Sluice | 0.89 m (Low/Medium) | 0.85 | 0.99 | Rising | 20th May 2012 at 03:45 |
| Witham | Bracebridge | 0.40 m (Low) | 0.30 | 1.84 | Rising | 20th May 2012 at 04:00 |
| Witham | Brayford Pool | 0.28 m (Low) | 0.23 | 0.66 | Falling | 20th May 2012 at 04:00 |
| Witham | Bargate Weir | 0.02 m (Low) | 0.00 | 0.59 | Falling | 20th May 2012 at 06:30 |
| Witham | Fiskerton Sluice | 0.11 m (Low) | 0.09 | 0.90 | Falling | 20th May 2012 at 03:45 |
| Witham | Chapel Hill | 1.06 m (Medium) | 0.39 | 1.33 | Rising | 20th May 2012 at 06:00 |
| Witham | Hobhole Sluice | 0.00 m (Very High) | 0.00 | 0.00 | Falling | 20th May 2012 at 05:30 |
| Witham | Bardney | 0.82 m (Low) | 0.27 | 2.58 | Rising | 20th May 2012 at 06:00 |
| Witham | North Witham | 0.18 m (Low) | 0.08 | 0.84 | Falling | 20th May 2012 at 17:30 |
| Withy Brook | Bastreet | 0.29 m (Low/Medium) | 0.13 | 0.60 | Falling | 20th May 2012 at 04:00 |
| Wnion | Dolgellau | 1.57 m (Low) | 1.23 | 2.70 | Rising | 20th May 2012 at 16:45 |
| Wolf | Germansweek | 0.15 m (Low) | 0.07 | 0.81 | Falling | 20th May 2012 at 06:15 |
| Wood Brook | Loughborough | 0.06 m (Low/Medium) | 0.03 | 0.11 | Falling | 20th May 2012 at 18:00 |
| Woodbridge Brook | Crabb Mill | 0.23 m (Low/Medium) | 0.05 | 0.68 | Falling | 20th May 2012 at 04:00 |
| Wooler Water | Coldgate Mill | 0.10 m (Low) | 0.04 | 0.80 | Falling | 20th May 2012 at 18:30 |
| Wooler Water | Wooler | 0.18 m (Low) | 0.09 | 0.80 | Falling | 20th May 2012 at 18:30 |
| Wootton Brook | Wootton Park | 0.12 m (Low) | 0.06 | 1.09 | Falling | 20th May 2012 at 18:30 |
| Wraysbury River - Upstream | Staines Moor | 0.11 m (Low) | 0.05 | 0.45 | Falling | 20th May 2012 at 09:00 |
| Wraysbury River - Upstream | Stains, Pounds Mill | 0.12 m (Low) | 0.06 | 1.30 | Falling | 20th May 2012 at 09:00 |
| Wych Brook | Wych Brook | 0.58 m (Low) | 0.51 | 1.46 | Rising | 20th May 2012 at 16:45 |
| Wych Brook | Wych Brook | 0.58 m (Low) | 0.51 | 1.46 | Rising | 20th May 2012 at 16:45 |
| Wye | Hay On Wye | 0.48 m (Low) | 0.26 | 1.38 | Rising | 20th May 2012 at 16:45 |
| Wye | Glasbury | 0.94 m (Low) | 0.72 | 1.99 | Rising | 20th May 2012 at 16:45 |
| Wye | Monmouth | 1.51 m (Low/Medium) | 0.83 | 3.14 | Rising | 20th May 2012 at 16:45 |
| Wye | Titley Mill | 0.27 m (Low/Medium) | 0.06 | 0.65 | Falling | 20th May 2012 at 18:00 |
| Wye | Tintern Abbey Mill | 2.02 m (Low) | 1.13 | 6.00 | Rising | 20th May 2012 at 16:45 |
| Wye | Ross On Wye | 0.82 m (Low) | 0.25 | 2.64 | Rising | 20th May 2012 at 18:00 |
| Wye | Redbrook | 1.28 m (Low/Medium) | 0.26 | 3.52 | Rising | 20th May 2012 at 16:45 |
| Wye | Pant Mawr | 0.17 m (Low) | 0.17 | 0.60 | Falling | 20th May 2012 at 16:45 |
| Wye | Mordiford | 1.00 m (Low) | 0.47 | 3.11 | Rising | 20th May 2012 at 18:00 |
| Wye | Builth Wells | 1.21 m (Medium) | 0.27 | 2.08 | Rising | 20th May 2012 at 16:45 |
| Wye | Hereford Bridge | 0.64 m (Low) | 0.10 | 2.56 | Rising | 20th May 2012 at 18:00 |
| Wye | Erwood | 1.00 m (Low/Medium) | 0.47 | 2.15 | Rising | 20th May 2012 at 16:45 |
| Wye | Ddol Farm | 0.52 m (Low/Medium) | 0.27 | 1.12 | Rising | 20th May 2012 at 16:45 |
| Wye | Chepstoe Bridge | 1.00 m (Very High) | 0.00 | 0.00 | Rising | 30th November -0001 at 00:00 |
| Wye | Bredwardine | 0.77 m (Low) | 0.27 | 2.78 | Rising | 20th May 2012 at 18:00 |
| Wye | Belmont | 0.80 m (Low) | 0.18 | 2.89 | Rising | 20th May 2012 at 18:00 |
| Wye | Wycombe Wye | 0.09 m (Low/Medium) | 0.00 | 0.32 | Falling | 20th May 2012 at 09:00 |
| Wye | Loudwater | 0.44 m (Low) | 0.44 | 0.74 | Rising | 20th May 2012 at 09:00 |
| Wye | Bourne End Wye | 0.11 m (Low) | 0.11 | 0.28 | Falling | 20th May 2012 at 18:45 |
| Wye | Belmont | 0.80 m (Low) | 0.18 | 2.89 | Rising | 20th May 2012 at 18:00 |
| Wye | Bredwardine | 0.77 m (Low) | 0.27 | 2.78 | Rising | 20th May 2012 at 18:00 |
| Wye | Builth Wells | 1.21 m (Medium) | 0.27 | 2.08 | Rising | 20th May 2012 at 16:45 |
| Wye | Ddol Farm | 0.52 m (Low/Medium) | 0.27 | 1.12 | Rising | 20th May 2012 at 16:45 |
| Wye | Erwood | 1.00 m (Low/Medium) | 0.47 | 2.15 | Rising | 20th May 2012 at 16:45 |
| Wye | Glasbury | 0.94 m (Low) | 0.72 | 1.99 | Rising | 20th May 2012 at 16:45 |
| Wye | Hereford Bridge | 0.64 m (Low) | 0.10 | 2.56 | Rising | 20th May 2012 at 18:00 |
| Wye | Monmouth | 1.51 m (Low/Medium) | 0.83 | 3.14 | Rising | 20th May 2012 at 16:45 |
| Wye | Mordiford | 1.00 m (Low) | 0.47 | 3.11 | Rising | 20th May 2012 at 18:00 |
| Wye | Pant Mawr | 0.17 m (Low) | 0.17 | 0.60 | Falling | 20th May 2012 at 16:45 |
| Wye | Redbrook | 1.28 m (Low/Medium) | 0.26 | 3.52 | Rising | 20th May 2012 at 16:45 |
| Wye | Ross On Wye | 0.82 m (Low) | 0.25 | 2.64 | Rising | 20th May 2012 at 18:00 |
| Wye | Tintern Abbey Mill | 2.02 m (Low) | 1.13 | 6.00 | Rising | 20th May 2012 at 16:45 |
| Wyre | Llanrhystud | 0.21 m (Low/Medium) | 0.12 | 0.43 | Falling | 20th May 2012 at 16:45 |
| Wyre | Abbeystead Reservoir | 0.08 m (Very Low) | 0.10 | 0.60 | Falling | 20th May 2012 at 15:00 |
| Wyre | Garstang | 0.26 m (Low) | 0.17 | 0.85 | Falling | 20th May 2012 at 15:00 |
| Wyre | Scorton | 0.14 m (Low) | 0.07 | 1.00 | Falling | 20th May 2012 at 15:00 |
| Wyre | St Michaels | 0.33 m (Very Low) | 0.40 | 4.10 | Unchanged | 20th May 2012 at 15:00 |
| Yarrow | Croston | 0.38 m (Low) | 0.23 | 1.00 | Rising | 20th May 2012 at 15:00 |
| Yarrow | Pincock Brow | 0.10 m (Low) | 0.08 | 0.90 | Falling | 20th May 2012 at 15:00 |
| Yazor Brook | Three Elms | 0.12 m (Very Low) | 0.13 | 0.41 | Falling | 20th May 2012 at 18:00 |
| Yazor Brook | Three Elms | 0.12 m (Very Low) | 0.13 | 0.41 | Falling | 20th May 2012 at 18:00 |
| Yeading Brook | Harrow, Village Way | 0.09 m (Low) | 0.07 | 0.90 | Falling | 20th May 2012 at 09:00 |
| Yeading Brook | Hillingdon, Charville Lane | 0.25 m (Low) | 0.16 | 2.00 | Falling | 20th May 2012 at 09:00 |
| Yeading Brook | Yeading, Brookside Road | 0.12 m (Low) | 0.12 | 2.10 | Falling | 20th May 2012 at 09:00 |
| Yeading Brook | Harrow, Village Way | 0.09 m (Low) | 0.07 | 0.90 | Falling | 20th May 2012 at 09:00 |
| Yeading Brook | Hillingdon, Charville Lane | 0.25 m (Low) | 0.16 | 2.00 | Falling | 20th May 2012 at 09:00 |
| Yeading Brook | Yeading, Brookside Road | 0.12 m (Low) | 0.12 | 2.10 | Falling | 20th May 2012 at 09:00 |
| Yeading Brook East | Northholt, Yeading East | 0.04 m (Low) | 0.03 | 0.50 | Falling | 20th May 2012 at 10:30 |
| Yeading Brook East | Northholt, Yeading East | 0.04 m (Low) | 0.03 | 0.50 | Falling | 20th May 2012 at 10:30 |
| Yeading Brook West | Hillingdon, Gutteridge Wood | 0.09 m (Low) | 0.08 | 1.57 | Falling | 20th May 2012 at 09:00 |
| Yeading Brook West | Hillingdon, Gutteridge Wood | 0.09 m (Low) | 0.08 | 1.57 | Falling | 20th May 2012 at 09:00 |
| Yscir | Pont Ar Yscir | 0.15 m (Low) | 0.05 | 0.54 | Falling | 20th May 2012 at 16:45 |
| Ystwyth | Cwmystwyth | 0.26 m (Low/Medium) | 0.15 | 0.54 | Falling | 20th May 2012 at 16:45 |
| Ystwyth | Pont Llolwyn | 1.20 m (Low/Medium) | 0.91 | 1.60 | Rising | 20th May 2012 at 16:45 |








