List of reservoirs in England and Wales by volume

Last updated

The following page lists the largest reservoirs in the United Kingdom.

RankNameOwnerLocationYear BuiltNominal volume m³Surface area m²Ref.
1 Kielder Water Northumbrian Water Northumberland 1981199,000,00010,860,000 [1]
2 Rutland Water Anglian Water Rutland 1976124,000,00012,600,000 [1]
3 Haweswater United Utilities Cumbria 193584,840,0003,900,000 [1]
4 Llyn Celyn Welsh Water Gwynedd 196580,930,8503,300,000 [1]
5 Llyn Brianne Welsh Water Powys 197264,400,0002,096,000 [1]
6 Llyn Brenig Welsh Water Denbighshire 197661,500,0003,725,000 [1]
7 Lake Vyrnwy Severn Trent Water Powys 188859,700,0004,536,000 [1]
8 Grafham Water Anglian Water Cambridgeshire 196557,800,0006,280,000 [1]
9 Clywedog Reservoir Severn Trent Water Powys 196749,940,0002,490,000 [1]
10 Cow Green Reservoir Northumbrian Water Teesdale 197140,914,0003,120,000 [1]
11 Thirlmere United Utilities Cumbria 189440,714,9993,290,000 [1]
12 Claerwen Welsh Water Powys 195240,307,0002,630,000 [1]
13 Derwent Reservoir Northumbrian Water County Durham 196540,060,0004,050,000 [1]
14 Roadford Lake South West Water Devon 198936,910,0002,987,000 [1]
15 Carsington Water Severn Trent Water Derbyshire 199236,331,000 [2] 3,000,000
16 Caban Coch Welsh Water Powys 190435,531,0002,023,000 [1]
17 Llyn Trawsfynydd Magnox Ltd Gwynedd 192833,190,0004,800,000 [1]
18 Nant y Moch Statkraft Ceredigion 196432,564,0002,630,000 [1]
19 Queen Mother Reservoir Thames Water Greater London 197631,492,0001,922,000 [1]
20 Bewl Water Southern Water East Sussex 197531,000,0003,120,000 [1]
21 Queen Mary Reservoir Thames Water Greater London 193130,363,0002,863,000 [1]
22 Colliford Lake South West Water Cornwall 198329,100,0003,660,000 [1]
23 Ladybower Reservoir Severn Trent Water Derbyshire 194327,800,0002,100,000 [1]
24 Hanningfield Reservoir Essex and Suffolk Water Essex 195727,721,0003,536,000 [1]
25 Wraysbury Reservoir Thames Water Greater London 197026,910,0002,023,000 [1]
26 Abberton Reservoir Essex and Suffolk Water Essex 193925,721,0004,900,000 [1]
27 Llandegfedd Reservoir Welsh Water Monmouthshire 196524,660,0001,760,445 [1]
28 Draycote Water Severn Trent Water Warwickshire 196922,730,0002,430,000 [1]
29 Grimwith Reservoir Yorkshire Water North Yorkshire 198322,200,0001,500,000 [1]
30 Wimbleball Lake South West Water Somerset 197921,541,0001,620,000 [1]
31 Chew Valley Lake Bristol Water Somerset 195620,457,0004,856,000 [1]
32 Balderhead Reservoir Northumbrian Water County Durham 196119,618,0001,170,000 [1]
33 King George VI Reservoir Thames Water Greater London 194718,732,0001,420,000 [1]
34 Blithfield Reservoir South Staffordshire Water Staffordshire 195318,172,0003,190,000 [1]
35 Pitsford Water Anglian Water Northamptonshire 195617,545,0003,030,000 [1]
36 Queen Elizabeth II Reservoir Thames Water Greater London 196216,809,0001,283,000 [1]
37 William Girling Reservoir Thames Water Greater London 195116,500,0001,350,000 [1]
38 Pontsticill Reservoir Welsh Water Powys 192715,640,0001,412,000 [1]
39 Selset Reservoir Northumbrian Water County Durham 196015,320,0001,110,000 [1]
40 Alwen Reservoir Welsh Water Conwy 192114,564,2001,490,000 [1]
41 King George V Reservoir Thames Water Greater London 191213,970,0001,720,000 [1]
42 Foremark Reservoir Severn Trent Water Derbyshire 197713,193,486930,000 [1]
43 Usk Reservoir Welsh Water Powys 195512,253,0001,160,000 [1]
44 Stocks Reservoir United Utilities Lancashire 193212,006,0001,390,000 [1]
45 Talybont Reservoir Welsh Water Powys 193911,668,0001,272,000 [1]
46 Covenham Reservoir Anglian Water Lincolnshire 197210,900,000882,000 [1]
47 Catcleugh Reservoir Northumbrian Water Northumberland 190510,480,000987,000 [1]
48 Scar House Reservoir Yorkshire Water North Yorkshire 193610,069,000700,000 [1]

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References

  1. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 Durant, M.J.; Counsell, C.J. (2018), Inventory of reservoirs amounting to 90% of total UK storage , NERC EDS Environmental Information Data Centre, doi:10.5285/f5a7d56c-cea0-4f00-b159-c3788a3b2b38 , retrieved 24 March 2023 Data downloadable with registration
  2. "Raw Water Storage Levels 15 August 2022 | Reservoir levels | About Us | Severn Trent Water". www.stwater.co.uk. Retrieved 2022-08-20.