List of reservoirs in England and Wales by volume

The following page lists the largest reservoirs by volume in England and Wales.

Rank	Name	Owner	Location	Year Built	Nominal volume m³	Surface area m²	Ref.
1	Kielder Water	Northumbrian Water	Northumberland	1981	199,000,000	10,860,000
2	Rutland Water	Anglian Water	Rutland	1976	124,000,000	12,600,000
3	Haweswater	United Utilities	Cumbria	1935	84,840,000	3,900,000
4	Llyn Celyn	Welsh Water	Gwynedd	1965	80,930,850	3,300,000
5	Llyn Brianne	Welsh Water	Powys	1972	64,400,000	2,096,000
6	Llyn Brenig	Welsh Water	Denbighshire	1976	61,500,000	3,725,000
7	Lake Vyrnwy	Severn Trent Water	Powys	1888	59,700,000	4,536,000
8	Grafham Water	Anglian Water	Cambridgeshire	1965	57,800,000	6,280,000
9	Clywedog Reservoir	Severn Trent Water	Powys	1967	49,940,000	2,490,000
10	Cow Green Reservoir	Northumbrian Water	Teesdale	1971	40,914,000	3,120,000
11	Thirlmere	United Utilities	Cumbria	1894	40,714,999	3,290,000
12	Claerwen	Welsh Water	Powys	1952	40,307,000	2,630,000
13	Derwent Reservoir	Northumbrian Water	County Durham	1965	40,060,000	4,050,000
14	Roadford Lake	South West Water	Devon	1989	36,910,000	2,987,000
15	Carsington Water	Severn Trent Water	Derbyshire	1992	36,331,000	3,000,000
16	Caban Coch	Welsh Water	Powys	1904	35,531,000	2,023,000
17	Llyn Trawsfynydd	Magnox Ltd	Gwynedd	1928	33,190,000	4,800,000
18	Nant y Moch	Statkraft	Ceredigion	1964	32,564,000	2,630,000
19	Queen Mother Reservoir	Thames Water	Greater London	1976	31,492,000	1,922,000
20	Bewl Water	Southern Water	East Sussex	1975	31,000,000	3,120,000
21	Queen Mary Reservoir	Thames Water	Greater London	1931	30,363,000	2,863,000
22	Colliford Lake	South West Water	Cornwall	1983	29,100,000	3,660,000
23	Ladybower Reservoir	Severn Trent Water	Derbyshire	1943	27,800,000	2,100,000
24	Hanningfield Reservoir	Essex and Suffolk Water	Essex	1957	27,721,000	3,536,000
25	Wraysbury Reservoir	Thames Water	Greater London	1970	26,910,000	2,023,000
26	Abberton Reservoir	Essex and Suffolk Water	Essex	1939	25,721,000	4,900,000
27	Llandegfedd Reservoir	Welsh Water	Monmouthshire	1965	24,660,000	1,760,445
28	Draycote Water	Severn Trent Water	Warwickshire	1969	22,730,000	2,430,000
29	Grimwith Reservoir	Yorkshire Water	North Yorkshire	1983	22,200,000	1,500,000
30	Wimbleball Lake	South West Water	Somerset	1979	21,541,000	1,620,000
31	Chew Valley Lake	Bristol Water	Somerset	1956	20,457,000	4,856,000
32	Balderhead Reservoir	Northumbrian Water	County Durham	1961	19,618,000	1,170,000
33	King George VI Reservoir	Thames Water	Greater London	1947	18,732,000	1,420,000
34	Blithfield Reservoir	South Staffordshire Water	Staffordshire	1953	18,172,000	3,190,000
35	Pitsford Water	Anglian Water	Northamptonshire	1956	17,545,000	3,030,000
36	Queen Elizabeth II Reservoir	Thames Water	Greater London	1962	16,809,000	1,283,000
37	William Girling Reservoir	Thames Water	Greater London	1951	16,500,000	1,350,000
38	Pontsticill Reservoir	Welsh Water	Powys	1927	15,640,000	1,412,000
39	Selset Reservoir	Northumbrian Water	County Durham	1960	15,320,000	1,110,000
40	Alwen Reservoir	Welsh Water	Conwy	1921	14,564,200	1,490,000
41	King George V Reservoir	Thames Water	Greater London	1912	13,970,000	1,720,000
42	Foremark Reservoir	Severn Trent Water	Derbyshire	1977	13,193,486	930,000
43	Usk Reservoir	Welsh Water	Powys	1955	12,253,000	1,160,000
44	Stocks Reservoir	United Utilities	Lancashire	1932	12,006,000	1,390,000
45	Talybont Reservoir	Welsh Water	Powys	1939	11,668,000	1,272,000
46	Covenham Reservoir	Anglian Water	Lincolnshire	1972	10,900,000	882,000
47	Catcleugh Reservoir	Northumbrian Water	Northumberland	1905	10,480,000	987,000
48	Scar House Reservoir	Yorkshire Water	North Yorkshire	1936	10,069,000	700,000

References

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