List of reservoirs in the United Kingdom

The following page lists the reservoirs in the United Kingdom.

Reservoirs accounting for 90% storage

This list contains 273 individual reservoirs, which amount to approximately 90% of total reservoir storage in the United Kingdom, sourced from the Environmental Information Data Centre.^[1]

Rank	Reservoir	Country	County	Grid Ref. Location	Maximum volume m³^[1]	Planning Date	Completion Date
26	Abberton	England	Essex	TL9810018300 51°49′41″N 0°52′24″E / 51.828181°N 0.873431°E / 51.828181; 0.873431 (Abberton Reservoir)	39,000,000	1935^{[lower-roman 1]}	1939
175	Agden	England	South Yorkshire	SK2610092300 53°25′37″N 1°36′31″W / 53.426850°N 1.6086803°W / 53.426850; -1.6086803 (Agden Reservoir)	2,859,000	1864	1869
152	Allerton Newton Fairburn	England	West Yorkshire	SE4500027200 53°44′21″N 1°19′09″W / 53.739250°N 1.3192470°W / 53.739250; -1.3192470 (Allerton Newton Fairburn)	3,347,500	NA	NA
229	Allt na Lairige	Scotland	Argyll and Bute	NN2530017400 56°19′00″N 4°49′34″W / 56.316700°N 4.8262144°W / 56.316700; -4.8262144 (Allt na Lairige)	1,838,000	1943^{[lower-roman 2]}	1956^{[lower-roman 3]}
83	Alton Water	England	Suffolk	TM1620035700 51°58′40″N 1°08′48″E / 51.977682°N 1.1465962°E / 51.977682; 1.1465962 (Alton Water)	9,100,000	1974^{[lower-roman 4]}	1986
60	Alwen Reservoir	Wales	Conwy	SH9550053000 53°03′50″N 3°33′39″W / 53.063990°N 3.5609018°W / 53.063990; -3.5609018 (Alwen Reservoir)	14,754,000	1909	1921
135	Anglezarke	England	Lancashire	SD6170016000 53°38′21″N 2°34′51″W / 53.639105°N 2.5807524°W / 53.639105; -2.5807524 (Anglezarke Reservoir)	4,044,000	1850	1857
129	Angram	England	North Yorkshire	SE0400076000 54°10′47″N 1°56′25″W / 54.179767°N 1.9402122°W / 54.179767; -1.9402122 (Angram Reservoir)	4,737,000	1904	1918
119	Ardingly	England	West Sussex	TQ3350028800 51°02′35″N 0°05′49″W / 51.043051°N 0.097062417°W / 51.043051; -0.097062417 (Ardingly Reservoir)	5,206,000	1974^{[lower-roman 5]}	1979^{[lower-roman 5]}
210	Ardleigh	England	Essex	TM0340028200 51°54′55″N 0°57′22″E / 51.915170°N 0.95606328°E / 51.915170; 0.95606328 (Ardleigh Reservoir)	2,109,000	1964	1979
143	Arlington	England	East Sussex	TQ5335207419 50°50′46″N 0°10′37″E / 50.845975°N 0.17691709°E / 50.845975; 0.17691709 (Arlington Reservoir)	3,545,800	1969	1971
185	Audenshaw No.1	England	Greater Manchester	SJ9170096700 53°28′01″N 2°07′35″W / 53.466973°N 2.1264940°W / 53.466973; -2.1264940 (Audenshaw No.1)	2,590,000	1875	1882
234	Audenshaw No.2	England	Greater Manchester	SJ9140096200 53°27′45″N 2°07′52″W / 53.462474°N 2.1309991°W / 53.462474; -2.1309991 (Audenshaw No.2)	1,745,000	1875	1882
183	Audenshaw No.3	England	Greater Manchester	SJ9110096700 53°28′01″N 2°08′08″W / 53.466963°N 2.1355320°W / 53.466963; -2.1355320 (Audenshaw No.3)	2,680,000	1877	1882
201	Baddinsgill^{[lower-roman 5]}	Scotland	Scottish Borders	NT1286455787 55°47′15″N 3°23′28″W / 55.787507°N 3.3910944°W / 55.787507; -3.3910944 (Baddinsgill Reservoir)	2,250,000	1926	1828
144	Baitings	England	West Yorkshire	SE0100018900 53°40′00″N 1°59′11″W / 53.666580°N 1.9863413°W / 53.666580; -1.9863413 (Baitings Reservoir)	3,523,000	1929^{[lower-roman 5]}	1956
168	Bakethin	England	Northumberland	NY6430091300 55°12′53″N 2°33′45″W / 55.214639°N 2.5626151°W / 55.214639; -2.5626151 (Bakethin Reservoir)	2,960,000	1971^{[lower-roman 6]}	1981
50	Balderhead	England	County Durham	NY9280018400 54°33′39″N 2°06′46″W / 54.560782°N 2.1128527°W / 54.560782; -2.1128527 (Balderhead Reservoir)	19,618,000	1959^{[lower-roman 1]}	1965
178	Banbury	England	Greater London	TQ3620091400 51°36′18″N 0°02′05″W / 51.604974°N 0.034668699°W / 51.604974; -0.034668699 (Banbury Reservoir)	2,779,000	1897^{[lower-roman 4]}	1903
166	Banbury FSA	England	Greater London	TQ3620091400 51°36′18″N 0°02′05″W / 51.604974°N 0.034668699°W / 51.604974; -0.034668699 (Banbury FSA)	3,040,000	2001	2012
202	Barden Lower	England	North Yorkshire	SE0350056700 54°00′23″N 1°56′53″W / 54.006312°N 1.9480887°W / 54.006312; -1.9480887 (Barden Lower Reservoir)	2,240,000	1854	1873
209	Barden Upper	England	North Yorkshire	SE0120057800 54°00′58″N 1°58′59″W / 54.016208°N 1.9831770°W / 54.016208; -1.9831770 (Barden Upper Reservoir)	2,112,000	1854	1873
261	Barnacre North	England	Lancashire	SD5260047800 53°55′27″N 2°43′24″W / 53.924153°N 2.7232767°W / 53.924153; -2.7232767 (Barnacre North)	344,000	1861^{[lower-roman 4]}	1878
264	Barnacre South	England	Lancashire	SD5260047600 53°55′20″N 2°43′24″W / 53.922355°N 2.7232456°W / 53.922355; -2.7232456 (Barnacre South)	248,000	1861^{[lower-roman 4]}	1878
268	Barrow 1	England	Somerset	ST5360067200 51°24′07″N 2°40′06″W / 51.401921°N 2.6684067°W / 51.401921; -2.6684067 (Barrow 1)	157,000	1846^{[lower-roman 4]}	1850
265	Barrow 2	England	Somerset	ST5390067500 51°24′17″N 2°39′51″W / 51.404643°N 2.6641335°W / 51.404643; -2.6641335 (Barrow 2)	245,000	1846^{[lower-roman 4]}	1850
208	Barrow 3	England	Somerset	ST5430068000 51°24′33″N 2°39′30″W / 51.409171°N 2.6584480°W / 51.409171; -2.6584480 (Barrow 3)	2,160,000	1846^{[lower-roman 4]}	1850
191	Bartley	England	West Midlands County	SP0020081200 52°25′44″N 1°59′55″W / 52.428782°N 1.9984853°W / 52.428782; -1.9984853 (Bartley Reservoir)	2,400,000	1925	1930
267	Beacons Reservoir	Wales	Powys	SN9870018580 51°51′24″N 3°28′20″W / 51.856583°N 3.4722935°W / 51.856583; -3.4722935 (Beacons Reservoir)	160,000	1883^{[lower-roman 4]}	1897
96	Beckingham FSA	England	Nottinghamshire	SK7950090500 53°24′19″N 0°48′20″W / 53.405341°N 0.80563022°W / 53.405341; -0.80563022 (Beckingham FSA)	7,000,000	1960	1960
224	Belmont	England	Blackburn with Darwen	SD6730016400 53°38′35″N 2°29′46″W / 53.643081°N 2.4960998°W / 53.643081; -2.4960998 (Belmont Reservoir)	1,886,000	1824	1826
206	Belvide	England	Staffordshire	SJ8650010200 52°41′22″N 2°12′04″W / 52.689316°N 2.2011613°W / 52.689316; -2.2011613 (Belvide Reservoir)	2,196,000	1825^{[lower-roman 1]}	1833
239	Ben Crom	Northern Ireland	County Down	SB4015582002 54°10′04″N 5°58′57″W / 54.167845°N 5.9825162°W / 54.167845; -5.9825162 (Ben Crom Reservoir)	1,700,000	1945	1957
32	Bewl Bridge	England	East Sussex	TQ6776832663 51°04′08″N 0°23′35″E / 51.068782°N 0.39313386°E / 51.068782; 0.39313386 (Bewl Bridge Reservoir)	31,400,000	1967^{[lower-roman 6]}	1975
195	Blackbrook	England	Leicestershire	SK4580017500 52°45′11″N 1°19′22″W / 52.753180°N 1.3228607°W / 52.753180; -1.3228607 (Blackbrook Reservoir)	2,300,000	1901	1906
160	Blackmoorfoot	England	West Yorkshire	SE0990013000 53°36′48″N 1°51′07″W / 53.613459°N 1.8518301°W / 53.613459; -1.8518301 (Blackmoorfoot)	3,205,000	1869	1876
212	Blackton	England	County Durham	NY9440018600 54°33′45″N 2°05′17″W / 54.562600°N 2.0881146°W / 54.562600; -2.0881146 (Blackton Reservoir)	2,105,000	1876^{[lower-roman 1]}	1896
5	Blackwater	Scotland	Highland	NN2475160292 56°42′05″N 4°51′50″W / 56.701359°N 4.8639740°W / 56.701359; -4.8639740 (Blackwater Reservoir)	214,977,000	1904	1909
88	Blagdon (Bristol)	England	Somerset	ST5100060000 51°20′13″N 2°42′17″W / 51.336967°N 2.7047849°W / 51.336967; -2.7047849 (Blagdon Lake)	8,260,000	1888^{[lower-roman 4]}	1904
52	Blithfield	England	Staffordshire	SK0600023500 52°48′32″N 1°54′45″W / 52.809016°N 1.9124313°W / 52.809016; -1.9124313 (Blithfield Reservoir)	18,200,000	1892	1953
248	Bosley	England	Cheshire	SJ9220065900 53°11′24″N 2°07′05″W / 53.190130°N 2.1181929°W / 53.190130; -2.1181929 (Bosley Reservoir)	1,224,000	1826	1931
196	Bottoms (Longdendale)	England	Derbyshire	SK0230097000 53°28′11″N 1°58′01″W / 53.469732°N 1.9668196°W / 53.469732; -1.9668196 (Bottoms Reservoir (Derbyshire))	2,300,000	1848	1877
78	Bough Beech	England	Kent	TQ4940047700 51°12′32″N 0°08′15″E / 51.208972°N 0.13741063°E / 51.208972; 0.13741063 (Bough Beech Reservoir)	10,018,000	1965^{[lower-roman 6]}	1968
220	Branston Island	England	Lincolnshire	TF1000071000 53°13′29″N 0°21′14″W / 53.224667°N 0.35378615°W / 53.224667; -0.35378615 (Branston Island)	2,000,000	NA	NA
246	Brent	England	Greater London	TQ2160087100 51°34′11″N 0°14′49″W / 51.569668°N 0.24686808°W / 51.569668; -0.24686808 (Brent Reservoir)	1,632,330	1819	1835
126	Broomhead	England	South Yorkshire	SK2690095900 53°27′33″N 1°35′47″W / 53.459168°N 1.5963348°W / 53.459168; -1.5963348 (Broomhead Reservoir)	4,937,282	1867	1929
69	Brotherton Little Marsh to Birkin Holme Washland	England	North Yorkshire	SE5210025300 53°43′17″N 1°12′43″W / 53.721515°N 1.2119357°W / 53.721515; -1.2119357	11,320,000	NA	NA
102	Burnhope	England	County Durham	NY8470039000 54°44′45″N 2°14′21″W / 54.745724°N 2.2391942°W / 54.745724; -2.2391942 (Burnhope Reservoir)	6,438,182	1931	1937
132	Burrator^{[lower-roman 5]}	England	Devon	SX5568768562 50°29′57″N 4°02′10″W / 50.499032°N 4.0361770°W / 50.499032; -4.0361770 (Burrator Reservoir)	4,464,000	1891	1898
232	Butterley	England	West Yorkshire	SE0470010500 53°35′28″N 1°55′50″W / 53.591059°N 1.9304674°W / 53.591059; -1.9304674 (Butterley Reservoir (Derbyshire))	1,773,000	1789	1794
28	Caban Coch	Wales	Powys	SN9160063200 52°15′23″N 3°35′22″W / 52.256256°N 3.5895197°W / 52.256256; -3.5895197 (Caban Coch)	36,865,000	1892^{[lower-roman 4]}	1904
218	Caldecott Lake	England	Buckinghamshire	SP8990035800 52°00′48″N 0°41′29″W / 52.013356°N 0.69150143°W / 52.013356; -0.69150143 (Caldecott Lake)	2,014,000	1967	1972
269	Cantref Reservoir	Wales	Powys	SN9938015840 51°49′55″N 3°27′42″W / 51.832079°N 3.4616252°W / 51.832079; -3.4616252 (Cantref Reservoir)	145,000	1884^{[lower-roman 4]}	1892
29	Carsington	England	Derbyshire	SK2480051400 53°03′33″N 1°37′53″W / 53.059279°N 1.6314139°W / 53.059279; -1.6314139 (Carsington Water)	36,000,000	1973^{[lower-roman 6]}	1992
75	Catcleugh	England	Northumberland	NT7470003100 55°19′17″N 2°24′01″W / 55.321313°N 2.4002361°W / 55.321313; -2.4002361 (Catcleugh Reservoir)	10,500,000	1888	1905
240	Catterall Flood Storage	England	Lancashire	SD4680041300 53°51′55″N 2°48′38″W / 53.865173°N 2.8104563°W / 53.865173; -2.8104563 (Catterall Flood Storage)	1,700,000	NA	1982
214	Cavendish Dock	England	Cumbria	SD2120068300 54°06′16″N 3°12′24″W / 54.104527°N 3.2066514°W / 54.104527; -3.2066514 (Cavendish Dock)	2,053,000	1863	1879
63	Cawood Ings Wistow Lordship	England	North Yorkshire	SE6050036000 53°49′00″N 1°04′57″W / 53.816769°N 1.0825621°W / 53.816769; -1.0825621 (Cawood Ings Wistow Lordship)	13,500,000	NA	NA
142	Chasewater	England	Staffordshire	SK0360007600 52°39′58″N 1°56′54″W / 52.666103°N 1.9482042°W / 52.666103; -1.9482042 (Chasewater)	3,691,000	1794	1797
108	Cheddar	England	Somerset	ST4410053700 51°16′47″N 2°48′10″W / 51.279686°N 2.8028357°W / 51.279686; -2.8028357 (Cheddar Reservoir)	6,140,000	1933	1938
270	Chelker	England	North Yorkshire	SE0564051600 53°57′38″N 1°54′56″W / 53.960456°N 1.9155302°W / 53.960456; -1.9155302 (Chelker Reservoir)	95,000	NA	1866
164	Chelmarsh	England	Shropshire	SO7340087500 52°29′05″N 2°23′35″W / 52.484765°N 2.3931329°W / 52.484765; -2.3931329 (Chelmarsh Reservoir)	3,063,320	1960	1963
273	Chew Magna	England	Somerset	ST5660063200 51°21′58″N 2°37′29″W / 51.366195°N 2.6247933°W / 51.366195; -2.6247933 (Chew Magna Reservoir)	43,000	1850	1850
47	Chew Valley Lake	England	Somerset	ST5700060000 51°20′15″N 2°37′07″W / 51.337453°N 2.6186602°W / 51.337453; -2.6186602 (Chew Valley Lake)	20,457,000	1939^{[lower-roman 6]}	1956
111	Chrathaich	Scotland	Highland	NH3640020700 57°14′52″N 4°42′47″W / 57.247645°N 4.7131125°W / 57.247645; -4.7131125 (Chrathaich Reservoir)	5,629,000	1928^{[lower-roman 6]}	1955^{[lower-roman 3]}
177	Church Wilne^{[lower-roman 5]}	England	Derbyshire	SK4630032500 52°53′17″N 1°18′48″W / 52.887970°N 1.3133319°W / 52.887970; -1.3133319 (Church Wilne Reservoir)	2,790,000	NA	1972
22	Claerwen	Wales	Powys	SN8550065100 52°16′20″N 3°40′46″W / 52.272093°N 3.6794917°W / 52.272093; -3.6794917 (Claerwen Reservoir)	48,686,000	1892^{[lower-roman 6]}	1952
116	Clatworthy	England	Somerset	ST0430031400 51°04′26″N 3°22′03″W / 51.073920°N 3.3673742°W / 51.073920; -3.3673742 (Clatworthy Reservoir)	5,364,000	1950	1958
197	Clifton Ings Washlands	England	North Yorkshire	SE5870053100 53°58′14″N 1°06′24″W / 53.970648°N 1.1066274°W / 53.970648; -1.1066274 (Clifton Ings Washlands)	2,300,000	NA	NA
34	Colliford Lake	England	Cornwall	SX1790071000 50°30′37″N 4°34′11″W / 50.510401°N 4.5696538°W / 50.510401; -4.5696538 (Colliford Lake)	29,100,000	1976^{[lower-roman 6]}	1983
127	Colt Crag	England	Northumberland	NY9400078100 55°05′50″N 2°05′44″W / 55.097285°N 2.0955583°W / 55.097285; -2.0955583 (Colt Crag Reservoir)	4,855,000	1863	1884
73	Covenham	England	Lincolnshire	TF3463596017 53°26′37″N 0°01′32″E / 53.443731°N 0.025611218°E / 53.443731; 0.025611218 (Covenham Reservoir)	10,900,000	1963	1978
24	Cow Green	England	Durham	NY8120028900 54°39′17″N 2°17′34″W / 54.654841°N 2.2929079°W / 54.654841; -2.2929079 (Cow Green Reservoir)	40,914,000	1958^{[lower-roman 4]}	1970
79	Craig Goch	Wales	Powys	SN8960069800 52°18′55″N 3°37′15″W / 52.315169°N 3.6209719°W / 52.315169; -3.6209719 (Craig Goch Reservoir)	9,583,000	1892^{[lower-roman 4]}	1904
136	Cray	Wales	Powys	SN8850022000 51°53′07″N 3°37′17″W / 51.885373°N 3.6214431°W / 51.885373; -3.6214431 (Cray Reservoir)	4,027,000	1898^{[lower-roman 5]}	1906^{[lower-roman 5]}
186	Cropston	England	Leicestershire	SK5470011000 52°41′38″N 1°11′32″W / 52.693928°N 1.1920904°W / 52.693928; -1.1920904 (Cropston Reservoir)	2,528,000	1865	1870
48	Crowlands Cowbit Washes	England	Lincolnshire	TF2600016500 52°43′53″N 0°08′08″W / 52.731468°N 0.13545822°W / 52.731468; -0.13545822 (Crowlands Cowbit Washes)	20,000,000	NA	NA
147	Crummock Water	England	Cumbria	NY1510020800 54°34′31″N 3°18′54″W / 54.575257°N 3.3148907°W / 54.575257; -3.3148907 (Crummock Water)	3,400,000	NA	NA
70	Curry Moor Flood Storage Area	England	Somerset	ST3260027000 51°02′18″N 2°57′46″W / 51.038387°N 2.9626802°W / 51.038387; -2.9626802 (Curry Moor Flood Storage Area)	11,283,000	NA	NA
44	Daer	Scotland	South Lanarkshire	NS9757507812 55°21′13″N 3°37′01″W / 55.353611°N 3.6169925°W / 55.353611; -3.6169925 (Daer Reservoir)	22,494,000	1948	1956
205	Dale Dyke	England	South Yorkshire	SK2430091700 53°25′18″N 1°38′09″W / 53.421543°N 1.6358144°W / 53.421543; -1.6358144 (Dale Dyke Reservoir)	2,210,000	1853^{[lower-roman 4]}	1875
118	Damflask	England	South Yorkshire	SK2840090700 53°24′44″N 1°34′27″W / 53.412351°N 1.5742116°W / 53.412351; -1.5742116 (Damflask Reservoir)	5,264,000	1864	1867
130	Darwell^{[lower-roman 5]}	England	East Sussex	TQ7150021200 50°57′53″N 0°26′27″E / 50.964696°N 0.44093306°E / 50.964696; 0.44093306 (Darwell Reservoir)	4,730,000	1937	1949
194	Delph	England	Greater Manchester	SD7030015400 53°38′03″N 2°27′02″W / 53.634273°N 2.4506272°W / 53.634273; -2.4506272 (Delph Reservoir)	2,326,700	1905^{[lower-roman 1]}	1921
80	Derwent	England	Derbyshire	SK1730089800 53°24′17″N 1°44′28″W / 53.404740°N 1.7412482°W / 53.404740; -1.7412482 (Derwent Reservoir (Derbyshire))	9,470,000	1899^{[lower-roman 4]}	1916
19	Derwent Reservoir	England	County Durham	NZ0250051400 54°51′27″N 1°57′45″W / 54.857386°N 1.9625840°W / 54.857386; -1.9625840 (Derwent Reservoir (Durham))	50,060,000	1950^{[lower-roman 6]}	1966
157	Digley	England	West Yorkshire	SE1100007000 53°33′34″N 1°50′07″W / 53.559507°N 1.8354124°W / 53.559507; -1.8354124 (Digley Reservoir)	3,260,000	1937^{[lower-roman 4]}	1954
258	Doe Park	England	West Yorkshire	SE0780034200 53°48′15″N 1°52′59″W / 53.804041°N 1.8830465°W / 53.804041; -1.8830465 (Doe Park Reservoir)	422,000	1857	1862
266	Donolly Reservoir	Scotland	East Lothian	NT5780068700 55°54′34″N 2°40′36″W / 55.909541°N 2.6766156°W / 55.909541; -2.6766156 (Donolly Reservoir)	209,000	NA	NA
123	Dovestone	England	Greater Manchester	SE0160003600 53°31′45″N 1°58′38″W / 53.529058°N 1.9773335°W / 53.529058; -1.9773335 (Dovestone Reservoir)	5,048,000	1958^{[lower-roman 4]}	1966
43	Draycote Water	England	Warwickshire	SP4600070000 52°19′34″N 1°19′35″W / 52.326175°N 1.3264618°W / 52.326175; -1.3264618 (Draycote Water)	22,730,000	1965^{[lower-roman 6]}	1969
42	East Ings and Wood Holmes Washland Reservoir	England	North Yorkshire	SE5230024300 53°42′45″N 1°12′33″W / 53.712507°N 1.2090737°W / 53.712507; -1.2090737	23,700,000	NA	NA
251	East Warwick	England	Greater London	TQ3480088500 51°34′45″N 0°03′22″W / 51.579250°N 0.055985047°W / 51.579250; -0.055985047 (East Warwick Reservoir)	742,000	1853^{[lower-roman 4]}	1900^{[lower-roman 5]}
103	Eccup	England	West Yorkshire	SE3080041800 53°52′17″N 1°31′59″W / 53.871498°N 1.5330645°W / 53.871498; -1.5330645 (Eccup Reservoir)	6,410,000	1885	1897
153	Eglwys Nunydd	Wales	Neath Port Talbot	SS7920085500 51°33′19″N 3°44′38″W / 51.555411°N 3.7438321°W / 51.555411; -3.7438321 (Eglwys Nunydd Reservoir)	3,311,000	1957^{[lower-roman 5]}	1963
148	Ennerdale Water	England	Cumbria	NY0890015300 54°31′29″N 3°24′33″W / 54.524765°N 3.4090669°W / 54.524765; -3.4090669 (Ennerdale Water)	3,400,000	1902	1902
145	Entwistle	England	Blackburn with Darwen	SD7200017500 53°39′12″N 2°25′30″W / 53.653241°N 2.4251088°W / 53.653241; -2.4251088 (Entwistle Reservoir)	3,464,000	1832	1838^{[lower-roman 5]}
134	Errwood	England	Derbyshire	SK0140075200 53°16′26″N 1°58′50″W / 53.273783°N 1.9804662°W / 53.273783; -1.9804662 (Errwood Reservoir)	4,216,000	1930^{[lower-roman 4]}	1967
90	Eyebrook	England	Leicestershire	SP8480094700 52°32′37″N 0°45′04″W / 52.543560°N 0.75099918°W / 52.543560; -0.75099918 (Eyebrook Reservoir)	8,096,000	1937	1940
187	Farmoor No. 1	England	Oxfordshire	SP4450006800 51°45′29″N 1°21′24″W / 51.758126°N 1.3566759°W / 51.758126; -1.3566759 (Farmoor No. 1 Reservoir)	2,505,000	1962	1967
122	Farmoor No. 2	England	Oxfordshire	SP4450006000 51°45′03″N 1°21′24″W / 51.750934°N 1.3567780°W / 51.750934; -1.3567780 (Farmoor No. 2 Reservoir)	5,055,000	1962	1977
125	Fernilee	England	Derbyshire	SK0130077700 53°17′47″N 1°58′55″W / 53.296255°N 1.9819564°W / 53.296255; -1.9819564 (Fernilee Reservoir)	4,944,000	1930^{[lower-roman 4]}	1938
237	Fernworthy	England	Devon	SX6710084300 50°38′35″N 3°52′52″W / 50.643190°N 3.8809759°W / 50.643190; -3.8809759 (Fernworthy Reservoir)	1,727,300	1934	1942
141	Fewston	England	North Yorkshire	SE1870054100 53°58′57″N 1°42′59″W / 53.982621°N 1.7163354°W / 53.982621; -1.7163354 (Fewston Reservoir)	3,845,000	1874	1879
231	Ffynnon Llugwy	Wales	Conwy	SH6920062400 53°08′34″N 3°57′25″W / 53.142643°N 3.9569822°W / 53.142643; -3.9569822 (Ffynnon Llugwy Reservoir)	1,776,000	1915	1926
174	Fiddler's Ferry P.S. Ash Lagoon D	England	Cheshire	SJ5520085500 53°21′52″N 2°40′29″W / 53.364460°N 2.6746880°W / 53.364460; -2.6746880 (Fiddler's Ferry P.S. Ash Lagoon D)	2,900,000	NA	NA
154	Fontburn	England	Northumberland	NZ0450093500 55°14′08″N 1°55′51″W / 55.235687°N 1.9307831°W / 55.235687; -1.9307831 (Fontburn Reservoir)	3,279,000	1898^{[lower-roman 4]}	1903
64	Foremark	England	Derbyshire	SK3290024400 52°48′58″N 1°30′48″W / 52.816142°N 1.5132885°W / 52.816142; -1.5132885 (Foremark Reservoir)	13,193,490	1966	1977
76	Fruid	Scotland	Scottish Borders	NT0968919217 55°27′30″N 3°25′47″W / 55.458437°N 3.4296968°W / 55.458437; -3.4296968 (Fruid Reservoir)	10,438,000	1953^{[lower-roman 6]}	1968
82	Garreg Ddu	Wales	Powys	SN9110063900 52°15′45″N 3°35′49″W / 52.262447°N 3.5970679°W / 52.262447; -3.5970679 (Garreg Ddu Reservoir)	9,222,000^[2]	1892^{[lower-roman 4]}	1904
89	Gladhouse	Scotland	Midlothian	NT2977853599 55°46′14″N 3°07′15″W / 55.770608°N 3.1208736°W / 55.770608; -3.1208736 (Gladhouse Reservoir)	8,133,000	NA	1879
84	Glen Finglas	Scotland	Stirling	NN5241009260 56°15′10″N 4°23′02″W / 56.252852°N 4.3838037°W / 56.252852; -4.3838037 (Glen Finglas Reservoir)	9,043,000	1911	1965
243	Glencorse	Scotland	Midlothian	NT2164763897 55°51′43″N 3°15′12″W / 55.861862°N 3.2534157°W / 55.861862; -3.2534157 (Glencorse Reservoir)	1,673,000	1819	1824
236	Gorple Upper	England	West Yorkshire	SD9240031400 53°46′44″N 2°07′01″W / 53.778874°N 2.1168095°W / 53.778874; -2.1168095 (Gorple Upper Reservoir)	1,731,000	1928	1934
110	Gouthwaite	England	North Yorkshire	SE1300069000 54°07′00″N 1°48′09″W / 54.116708°N 1.8026204°W / 54.116708; -1.8026204 (Gouthwaite Reservoir)	5,810,789	1893	1901
17	Grafham Water^{[lower-roman 5]}	England	Cambridgeshire	TL1700067000 52°17′19″N 0°17′10″W / 52.288689°N 0.28606805°W / 52.288689; -0.28606805 (Grafham Water)	55,490,000	1961^{[lower-roman 6]}	1965
109	Grassholme	England	County Durham	NY9380022400 54°35′48″N 2°05′51″W / 54.596742°N 2.0974750°W / 54.596742; -2.0974750 (Grassholme Reservoir)	6,060,000	1876^{[lower-roman 4]}	1915
146	Greenbooth	England	Greater Manchester	SD8530015200 53°37′59″N 2°13′26″W / 53.633114°N 2.2237757°W / 53.633114; -2.2237757 (Greenbooth Reservoir)	3,405,000	1958	1962
45	Grimwith	England	North Yorkshire	SE0600064200 54°04′25″N 1°54′35″W / 54.073696°N 1.9097996°W / 54.073696; -1.9097996 (Grimwith Reservoir)	22,200,000	1856^{[lower-roman 6]}	1864
163	Hallington East	England	Northumberland	NY9730076300 55°04′52″N 2°02′38″W / 55.081140°N 2.0438290°W / 55.081140; -2.0438290 (Hallington East Reservoir)	3,116,740	1863	1872
149	Hallington West	England	Northumberland	NY9650076000 55°04′42″N 2°03′23″W / 55.078439°N 2.0563562°W / 55.078439; -2.0563562 (Hallington West Reservoir)	3,380,000	1876	1890
272	Hampton - Sunnyside	England	Greater London	TQ1270069000 51°24′32″N 0°22′52″W / 51.408835°N 0.38099829°W / 51.408835; -0.38099829 (Hampton - Sunnyside Reservoir)	71,000	1852^{[lower-roman 4]}	1855
36	Hanningfield	England	Essex	TQ7330098400 51°39′28″N 0°30′14″E / 51.657668°N 0.50402549°E / 51.657668; 0.50402549 (Hanningfield Reservoir)	27,721,000	1949^{[lower-roman 6]}	1957
13	Haweswater	England	Cumbria	NY5000015500 54°31′56″N 2°46′27″W / 54.532294°N 2.7741697°W / 54.532294; -2.7741697 (Haweswater Reservoir)	84,840,000	1880^{[lower-roman 6]}	1935
176	Heaton Park	England	Greater Manchester	SD8250004700 53°32′19″N 2°15′56″W / 53.538652°N 2.2655256°W / 53.538652; -2.2655256 (Heaton Park Reservoir)	2,800,000	1954	1955
263	Hewenden	England	West Yorkshire	SE0740035600 53°49′00″N 1°53′21″W / 53.816630°N 1.8890870°W / 53.816630; -1.8890870 (Hewenden Reservoir)	252,000	1842	1846
254	High Maynard	England	Greater London	TQ3550089600 51°35′20″N 0°02′44″W / 51.588967°N 0.045464928°W / 51.588967; -0.045464928 (High Maynard Reservoir)	659,000	1867^{[lower-roman 4]}^{[lower-roman 5]}	1870^{[lower-roman 5]}
181	Hilfield Park^{[lower-roman 5]}	England	Hertfordshire	TQ1570096000 51°39′03″N 0°19′44″W / 51.650897°N 0.32902291°W / 51.650897; -0.32902291 (Hilfield Park Reservoir)	2,728,000	NA	1955
189	Hollingworth Lake	England	Greater Manchester	SD9350015300 53°38′03″N 2°05′59″W / 53.634181°N 2.0997734°W / 53.634181; -2.0997734 (Hollingworth Lake)	2,468,000	1794	1800
213	Hollowell	England	Northamptonshire	SP6900072400 52°20′43″N 0°59′19″W / 52.345343°N 0.98853688°W / 52.345343; -0.98853688 (Hollowell Reservoir)	2,064,000	1936	1939
256	Hopes	Scotland	East Lothian	NT5470062100 55°51′00″N 2°43′30″W / 55.849963°N 2.7250932°W / 55.849963; -2.7250932 (Hopes Reservoir)	600,000	NA	1933
85	Howden	England	Derbyshire	SK1700092500 53°25′44″N 1°44′44″W / 53.429018°N 1.7456160°W / 53.429018; -1.7456160 (Howden Reservoir)	8,990,000	1899^{[lower-roman 4]}	1916
139	Hury	England	County Durham	NY9650019600 54°34′18″N 2°03′20″W / 54.571606°N 2.0556516°W / 54.571606; -2.0556516 (Hury Reservoir)	3,905,000	1876^{[lower-roman 4]}	1894
137	Island Barn	England	Surrey	TQ1390067000 51°23′26″N 0°21′52″W / 51.390619°N 0.36439363°W / 51.390619; -0.36439363 (Island Barn Reservoir)	4,011,000	1900^{[lower-roman 4]}	1911
215	Jumbles	England	Greater Manchester	SD7350013900 53°37′15″N 2°24′08″W / 53.620963°N 2.4021067°W / 53.620963; -2.4021067 (Jumbles Reservoir)	2,050,000	1971	1971
61	Kellington Ings Reservoir	England	North Yorkshire	SE5910024500 53°42′49″N 1°06′22″W / 53.713581°N 1.1060210°W / 53.713581; -1.1060210 (Kellington Ings Reservoir)	14,400,000	NA	NA
6	Kielder	England	Northumberland	NY7080087500 55°10′51″N 2°27′36″W / 55.180922°N 2.4600692°W / 55.180922; -2.4600692 (Kielder Reservoir)	199,000,000	1971^{[lower-roman 6]}	1981
159	Killington	England	Cumbria	SD5900091000 54°18′47″N 2°37′54″W / 54.312936°N 2.6317055°W / 54.312936; -2.6317055 (Killington Reservoir)	3,238,210	1817	1819
217	Kinder	England	Derbyshire	SK0585088190 53°23′26″N 1°54′49″W / 53.390517°N 1.9135015°W / 53.390517; -1.9135015 (Kinder Reservoir)	2,028,000	1899^{[lower-roman 4]}	1912
72	King George V	England	Greater London	TQ3740096500 51°39′02″N 0°00′55″W / 51.650510°N 0.015352701°W / 51.650510; -0.015352701 (King George V Reservoir)	10,981,000	1893	1912
51	King George VI	England	Surrey	TQ0410073200 51°26′54″N 0°30′12″W / 51.448229°N 0.50336831°W / 51.448229; -0.50336831 (King George VI Reservoir)	18,732,000	1936	1947
35	Ladybower	England	Derbyshire	SK2000085500 53°21′58″N 1°42′03″W / 53.365994°N 1.7009077°W / 53.365994; -1.7009077 (Ladybower Reservoir)	27,800,000	1920^{[lower-roman 4]}	1943
222	Lamaload	England	Cheshire	SJ9710075300 53°16′29″N 2°02′42″W / 53.274675°N 2.0449474°W / 53.274675; -2.0449474 (Lamaload Reservoir)	1,932,000	1958	1963
104	Langsett	England	South Yorkshire	SE2140000200 53°29′53″N 1°40′44″W / 53.498069°N 1.6788755°W / 53.498069; -1.6788755 (Langsett Reservoir)	6,401,000	1897	1904
259	Leeming	England	West Yorkshire	SE0380034400 53°48′21″N 1°56′38″W / 53.805882°N 1.9437800°W / 53.805882; -1.9437800 (Leeming Reservoir)	408,000	1872	1878
113	Leigh Barrier (Medway) FSR	England	Kent	TQ5650046300 51°11′40″N 0°14′18″E / 51.194493°N 0.23836213°E / 51.194493; 0.23836213 (Leigh Barrier (Medway) FSR)	5,580,000	1976^{[lower-roman 4]}	1982
128	Leighton	England	North Yorkshire	SE1620078800 54°12′17″N 1°45′11″W / 54.204694°N 1.7531441°W / 54.204694; -1.7531441 (Leighton Reservoir)	4,780,000	1908	1926
165	Lindley Wood	England	North Yorkshire	SE2150049300 53°56′22″N 1°40′26″W / 53.939372°N 1.6739758°W / 53.939372; -1.6739758 (Lindley Wood Reservoir)	3,045,000	1870	1874
167	Linton Ings	England	North Yorkshire	SE4840060400 54°02′14″N 1°15′45″W / 54.037317°N 1.2624729°W / 54.037317; -1.2624729 (Linton Ings Reservoir)	3,000,000	NA	NA
238	Little Swinburne	England	Northumberland	NY9450077200 55°05′21″N 2°05′16″W / 55.089204°N 2.0877054°W / 55.089204; -2.0877054 (Little Swinburne Reservoir)	1,721,000	1863	1879
41	Llandegfedd	Wales	Monmouhtshire / Torfaen	ST3260098500 51°40′52″N 2°58′35″W / 51.681200°N 2.9762550°W / 51.681200; -2.9762550 (Llandegfedd Reservoir)	24,492,000	1957^{[lower-roman 6]}	1964
121	Llwyn-On	Wales	Rhondda Cynon Taf	SO0110011400 51°47′33″N 3°26′07″W / 51.792479°N 3.4354039°W / 51.792479; -3.4354039 (Llwyn-On Reservoir)	5,066,000	1884^{[lower-roman 4]}	1926
95	Llyn Alaw	Wales	Gwynedd	SH3740085400 53°20′26″N 4°26′37″W / 53.340440°N 4.4437297°W / 53.340440; -4.4437297 (Llyn Alaw Reservoir)	7,400,000	1961	1965
230	Llyn Aled^{[lower-roman 5]}	Wales	Conwy	SH9160057900 53°06′26″N 3°37′15″W / 53.107241°N 3.6207301°W / 53.107241; -3.6207301 (Llyn Aled Reservoir)	1,777,000	NA	1934
93	Llyn Arenig Fawr	Wales	Gwynedd	SH8500037900 52°55′34″N 3°42′44″W / 52.926156°N 3.7121426°W / 52.926156; -3.7121426 (Llyn Arenig Fawr Reservoir)	7,488,000	NA	1830
18	Llyn Brenig	Wales	Conwy / Denbighshire	SH9770054300 53°04′34″N 3°31′43″W / 53.076098°N 3.5284979°W / 53.076098; -3.5284979 (Llyn Brenig Reservoir)	54,273,000	1973^{[lower-roman 6]}	1979
30	Llyn Brianne	Wales	Powys	SN7910048500 52°07′18″N 3°46′02″W / 52.121552°N 3.7673117°W / 52.121552; -3.7673117 (Llyn Brianne Reservoir)	32,882,000	1967^{[lower-roman 6]}	1972
23	Llyn Celyn	Wales	Gwynedd	SH8592140424 52°56′57″N 3°41′58″W / 52.949031°N 3.6993374°W / 52.949031; -3.6993374 (Llyn Celyn Reservoir)	40,959,000	1957^{[lower-roman 6]}	1965
21	Clywedog Reservoir (Llyn Clywedog)	Wales	Powys	SN8980088500 52°29′00″N 3°37′27″W / 52.483257°N 3.6242003°W / 52.483257; -3.6242003 (Clywedog Reservoir)	48,828,000	1963^{[lower-roman 6]}	1967
81	Llyn Cowlyd	Wales	Conwy	SH7380063400 53°09′10″N 3°53′19″W / 53.152737°N 3.8886457°W / 53.152737; -3.8886457 (Llyn Cowlyd Reservoir)	9,432,000	1891^{[lower-roman 4]}	1897
241	Llyn Cwellyn^{[lower-roman 5]}	Wales	Gwynedd	SH5540055600 53°04′41″N 4°09′36″W / 53.077993°N 4.1600815°W / 53.077993; -4.1600815 (Llyn Cwellyn Reservoir)	1,687,000	NA	1976
173	Llyn Cwmystradllyn^{[lower-roman 5]}	Wales	Gwynedd	SH5620044300 52°58′36″N 4°08′35″W / 52.976703°N 4.1431080°W / 52.976703; -4.1431080 (Llyn Cwmystradllyn Reservoir)	2,902,000	1959	1959
226	Llyn Peris	Wales	Gwynedd	SH5870059900 53°07′03″N 4°06′46″W / 53.117503°N 4.1127477°W / 53.117503; -4.1127477 (Llyn Peris Reservoir)	1,870,000	1973	1979
250	Llyn Stwlan	Wales	Gwynedd	SH6660044400 52°58′49″N 3°59′18″W / 52.980292°N 3.9883645°W / 52.980292; -3.9883645 (Llyn Stwlan Reservoir)	747,000	1952^{[lower-roman 6]}	1963
11	Bala Lake (Llyn Tegid)	Wales	Gwynedd	SH9290035000 52°54′06″N 3°35′37″W / 52.901732°N 3.5937195°W / 52.901732; -3.5937195 (Llyn Tegid (Bala Lake) Reservoir)	106,751,000	1803	1804
40	Llyn Trawsfynydd	Wales	Gwynedd	SH6940038200 52°55′31″N 3°56′39″W / 52.925281°N 3.9441860°W / 52.925281; -3.9441860 (Llyn Trawsfynydd Reservoir)	26,108,000	1924^{[lower-roman 5]}	1928
140	Loch Achonachie	Scotland	Highland	NH4460054600 57°33′17″N 4°35′56″W / 57.554706°N 4.5988314°W / 57.554706; -4.5988314 (Loch Achonachie Reservoir)	3,873,000	1943^{[lower-roman 2]}	1954^{[lower-roman 3]}
37	Loch an Diamh	Scotland	Perth and Kinross	NN5086746354 56°35′07″N 4°25′47″W / 56.585328°N 4.4298309°W / 56.585328; -4.4298309 (Loch an Diamh Reservoir)	27,052,000	1953^{[lower-roman 6]}	1959^{[lower-roman 3]}
57	Loch Arklet	Scotland	Stirling	NN3778009120 56°14′49″N 4°37′11″W / 56.246825°N 4.6195911°W / 56.246825; -4.6195911 (Loch Arklet Reservoir)	16,286,000	1902	1914
54	Loch Bradan	Scotland	South Ayrshire	NX4205297297 55°14′40″N 4°29′10″W / 55.244500°N 4.4860239°W / 55.244500; -4.4860239 (Loch Bradan Reservoir)	17,475,000	1908^{[lower-roman 4]}	1912
105	Loch Drunkie	Scotland	Stirling	NN5425004390 56°12′35″N 4°21′05″W / 56.209704°N 4.3514522°W / 56.209704; -4.3514522 (Loch Drunkie Reservoir)	6,346,000	1854	1864
4	Loch Earn	Scotland	Perth and Kinross	NN6990024200 56°23′32″N 4°06′33″W / 56.392099°N 4.1091174°W / 56.392099; -4.1091174 (Loch Earn Reservoir)	397,630,000	1943^{[lower-roman 2]}	1958^{[lower-roman 3]}
190	Loch Eigheach Gaur	Scotland	Perth and Kinross	NN4610056900 56°40′42″N 4°30′49″W / 56.678440°N 4.5136547°W / 56.678440; -4.5136547 (Loch Eigheach Gaur Reservoir)	2,461,000	1943^{[lower-roman 2]}	1953^{[lower-roman 3]}
1	Loch Ericht	Scotland	Perth and Kinross	NN5080062700 56°43′55″N 4°26′25″W / 56.732022°N 4.4403880°W / 56.732022; -4.4403880 (Loch Ericht Reservoir)	1,291,596,000	1912^{[lower-roman 6]}	1962^{[lower-roman 3]}
8	Loch Garry	Scotland	Highland	NH2760002100 57°04′39″N 4°50′45″W / 57.077537°N 4.8459025°W / 57.077537; -4.8459025 (Loch Garry Reservoir)	163,272,000	1943^{[lower-roman 2]}	1956^{[lower-roman 3]}
249	Loch Gleann A'Bhearraidh	Scotland	Argyll and Bute	NM8446426911 56°23′07″N 5°29′35″W / 56.385184°N 5.4930136°W / 56.385184; -5.4930136	774,000	1939	1939
2	Loch Katrine	Scotland	Stirling	NN4433509530 56°15′10″N 4°30′51″W / 56.252698°N 4.5141613°W / 56.252698; -4.5141613 (Loch Katrine Reservoir)	804,704,000	1848	1859
49	Loch Loyne	Scotland	Highland	NH2010007900 57°07′36″N 4°58′25″W / 57.126700°N 4.9736204°W / 57.126700; -4.9736204 (Loch Loyne Reservoir)	19,859,000	1938^{[lower-roman 6]}	1957^{[lower-roman 3]}
9	Loch Luichart	Scotland	Highland	NH3650061500 57°36′50″N 4°44′19″W / 57.613757°N 4.7386845°W / 57.613757; -4.7386845 (Loch Luichart Reservoir)	128,124,000	1943^{[lower-roman 2]}	1954^{[lower-roman 3]}
16	Loch Lyon	Scotland	Perth and Kinross	NN4520041700 56°32′30″N 4°31′09″W / 56.541721°N 4.5192239°W / 56.541721; -4.5192239 (Loch Lyon Reservoir)	59,270,000	1951^{[lower-roman 6]}	1958^{[lower-roman 3]}
58	Loch Nant	Scotland	Argyll and Bute	NN0030024900 56°22′27″N 5°14′08″W / 56.374101°N 5.2354396°W / 56.374101; -5.2354396 (Loch Nant Reservoir)	15,464,000	1959^{[lower-roman 6]}	1963^{[lower-roman 3]}
3	Loch Quoich	Scotland	Highland	NH0710002300 57°04′16″N 5°11′01″W / 57.071201°N 5.1837051°W / 57.071201; -5.1837051 (Loch Quoich Reservoir)	556,677,000	1928^{[lower-roman 6]}	1955^{[lower-roman 3]}
260	Loch Spey	Scotland	Highland	NN5810093700 57°00′45″N 4°20′19″W / 57.012555°N 4.3384944°W / 57.012555; -4.3384944 (Loch Spey Reservoir)	356,000	1918^{[lower-roman 4]}	1938
86	Loch Thom	Scotland	Renfrewshire	NS2594872193 55°54′41″N 4°47′11″W / 55.911261°N 4.7862577°W / 55.911261; -4.7862577 (Loch Thom Reservoir)	8,668,000	1824	1827
65	Loch Vaich	Scotland	Highland	NH3460074900 57°44′00″N 4°46′47″W / 57.733285°N 4.7796402°W / 57.733285; -4.7796402 (Loch Vaich Reservoir)	12,388,000	1943^{[lower-roman 2]}	1957^{[lower-roman 3]}
20	Loch Venachar	Scotland	Stirling	NN5743905550 56°13′16″N 4°18′03″W / 56.221084°N 4.3007086°W / 56.221084; -4.3007086 (Loch Venachar Reservoir)	49,358,000	1854	1857
211	Lockwood	England	Greater London	TQ3530090200 51°35′40″N 0°02′53″W / 51.594407°N 0.048118991°W / 51.594407; -0.048118991 (Lockwood Reservoir)	2,106,000	1893^{[lower-roman 4]}	1903
257	Loganlea	Scotland	Midlothian	NT1944262397 55°50′53″N 3°17′17″W / 55.848025°N 3.2881891°W / 55.848025; -3.2881891 (Loganlea Reservoir)	532,000	1847	1851
271	Low Maynard	England	Greater London	TQ3550089600 51°35′20″N 0°02′44″W / 51.588967°N 0.045464928°W / 51.588967; -0.045464928 (Low Maynard Reservoir)	80,000	1867^{[lower-roman 4]}^{[lower-roman 5]}	1870^{[lower-roman 5]}
124	Marchlyn Mawr	Wales	Gwynedd	SH6170062200 53°08′20″N 4°04′08″W / 53.138951°N 4.0689468°W / 53.138951; -4.0689468 (Marchlyn Mawr Reservoir)	5,017,000	1973	1979
14	Megget	Scotland	Scottish Borders	NT1925822198 55°29′13″N 3°16′45″W / 55.486890°N 3.2792883°W / 55.486890; -3.2792883 (Megget Reservoir)	63,722,000	1963	1983
162	Meldon	England	Devon	SX5630091600 50°42′22″N 4°02′11″W / 50.706230°N 4.0364604°W / 50.706230; -4.0364604 (Meldon Reservoir)	3,170,000	1962^{[lower-roman 6]}	1972
245	Mickletown Washland	England	West Yorkshire	SE4150027100 53°44′19″N 1°22′20″W / 53.738640°N 1.3723192°W / 53.738640; -1.3723192 (Mickletown Washland Reservoir)	1,655,000	NA	NA
227	Midhope	England	South Yorkshire	SK2230099400 53°29′27″N 1°39′55″W / 53.490841°N 1.6653653°W / 53.490841; -1.6653653 (Midhope Reservoir)	1,859,000	1895	1903
244	Misson East FSA	England	Nottinghamshire	SK7090094900 53°26′46″N 0°56′02″W / 53.446107°N 0.93397635°W / 53.446107; -0.93397635 (Misson East FSA)	1,670,000	NA	NA
233	Misson West FSA	England	Nottinghamshire	SK6850094000 53°26′18″N 0°58′13″W / 53.438336°N 0.97030047°W / 53.438336; -0.97030047 (Misson West FSA)	1,750,000	NA	NA
207	More Hall	England	South Yorkshire	SK2870095800 53°27′29″N 1°34′09″W / 53.458175°N 1.5692355°W / 53.458175; -1.5692355 (More Hall Reservoir)	2,172,989	1867	1929
7	Mullardoch	Scotland	Highland	NH2220031300 57°20′15″N 4°57′21″W / 57.337439°N 4.9557405°W / 57.337439; -4.9557405 (Mullardoch Reservoir)	165,226,000	1943^{[lower-roman 2]}	1951
39	Nant-y-Moch	Wales	Ceredigion	SN7540086200 52°27′34″N 3°50′07″W / 52.459490°N 3.8352785°W / 52.459490; -3.8352785 (Nant-y-Moch Reservoir)	26,292,000	1955^{[lower-roman 4]}	1964
193	Northampton Washlands	England	West Northamptonshire	SP7950060200 52°14′03″N 0°50′14″W / 52.234265°N 0.83730834°W / 52.234265; -0.83730834 (Northampton Washlands)	2,340,000	NA	NA
107	Ogston	England	Derbyshire	SK3780059900 53°08′06″N 1°26′11″W / 53.134923°N 1.4364542°W / 53.134923; -1.4364542 (Ogston Reservoir)	6,180,000	1953^{[lower-roman 4]}	1958
198	Oldbury Power Station	England	Gloucestershire	ST6000095000 51°39′08″N 2°34′46″W / 51.652358°N 2.5795759°W / 51.652358; -2.5795759 (Oldbury Power Station Reservoir)	2,300,000	NA	NA
12	Ouse Washes	England	Cambridgeshire	TL5000089000 52°28′42″N 0°12′26″E / 52.478317°N 0.20724239°E / 52.478317; 0.20724239 (Ouse Washes Reservoir)	90,000,000	NA	1652
114	Penygarreg	Wales	Powys	SN9030067400 52°17′37″N 3°36′36″W / 52.293742°N 3.6099246°W / 52.293742; -3.6099246 (Penygarreg Reservoir)	5,558,000	1892^{[lower-roman 4]}	1904
53	Pitsford	England	Northamptonshire	SP7550068900 52°18′47″N 0°53′38″W / 52.313028°N 0.89392331°W / 52.313028; -0.89392331 (Pitsford Reservoir)	17,545,000	1946	1955
74	Pontsticill (Taf Fechan)	Wales	Merthyr Tydfil / Powys	SO0610011800 51°47′49″N 3°21′47″W / 51.796937°N 3.3630375°W / 51.796937; -3.3630375	10,717,000	1921^{[lower-roman 6]}	1927
55	Queen Elizabeth II	England	Surrey	TQ1180067100 51°23′31″N 0°23′40″W / 51.391935°N 0.39453096°W / 51.391935; -0.39453096 (Queen Elizabeth II Reservoir)	16,809,000	1935	1967
33	Queen Mary	England	Surrey	TQ0730069700 51°24′58″N 0°27′30″W / 51.416173°N 0.45839646°W / 51.416173; -0.45839646 (Queen Mary Reservoir)	30,363,000	1911^{[lower-roman 6]}	1925
31	Queen Mother	England	Berkshire	TQ0090076800 51°28′52″N 0°32′54″W / 51.481166°N 0.54837454°W / 51.481166; -0.54837454 (Queen Mother Reservoir)	31,492,000	1945^{[lower-roman 6]}	1976
225	Ravensthorpe	England	West Northamptonshire	SP6810070400 52°19′39″N 1°00′08″W / 52.327477°N 1.0021509°W / 52.327477; -1.0021509 (Ravensthorpe Reservoir)	1,884,000	1880	1890
200	Rhodeswood	England	Derbyshire	SK0440098200 53°28′50″N 1°56′07″W / 53.480505°N 1.9351681°W / 53.480505; -1.9351681 (Rhodeswood Reservoir)	2,273,000	1848	1855
262	River Shin	Scotland	Highland	NC5820005100 58°00′45″N 4°24′06″W / 58.012378°N 4.4016958°W / 58.012378; -4.4016958 (River Shin Reservoir)	316,000	1954^{[lower-roman 6]}	1958^{[lower-roman 3]}
161	River Till Controlled Washland	England	Nottinghamshire	SK7030077500 53°17′23″N 0°56′49″W / 53.289812°N 0.94687140°W / 53.289812; -0.94687140 (River Till Controlled Washland)	3,200,000	1977	1990
106	River Witham Flood Washlands	England	Lincolnshire	SK9520063800 53°09′46″N 0°34′39″W / 53.162822°N 0.57753531°W / 53.162822; -0.57753531 (River Witham Flood Washlands)	6,300,000	NA	NA
100	Rivington Lower	England	Lancashire	SD6300012400 53°36′25″N 2°33′38″W / 53.606843°N 2.5606621°W / 53.606843; -2.5606621 (Rivington Lower)	6,516,000	1850	1857
27	Roadford	England	Devon	SX4200090000 50°41′17″N 4°14′17″W / 50.688140°N 4.2381365°W / 50.688140; -4.2381365 (Roadford Reservoir)	36,910,000	1976^{[lower-roman 6]}	1989
188	Roundhill	England	North Yorkshire	SE1500077200 54°11′25″N 1°46′18″W / 54.190351°N 1.7716197°W / 54.190351; -1.7716197 (Roundhill Reservoir)	2,503,000	NA	1910
170	Rudyard	England	Staffordshire	SJ9450059600 53°08′01″N 2°05′01″W / 53.133529°N 2.0836602°W / 53.133529; -2.0836602 (Rudyard Reservoir)	2,949,700	NA	1796
10	Rutland Water	England	Rutland	SK9440008000 52°39′41″N 0°36′20″W / 52.661511°N 0.60569370°W / 52.661511; -0.60569370 (Rutland Water)	124,000,000	1968^{[lower-roman 6]}	1976
242	Scaling	England	North Yorkshire	NZ7490012800 54°30′18″N 0°50′41″W / 54.504993°N 0.84482832°W / 54.504993; -0.84482832 (Scaling Reservoir)	1,682,000	1946	1958
91	Scammonden	England	West Yorkshire	SE0530016700 53°38′48″N 1°55′17″W / 53.646781°N 1.9212997°W / 53.646781; -1.9212997 (Scammonden Reservoir)	7,873,000	1965	1969
77	Scar House	England	North Yorkshire	SE0580076900 54°11′16″N 1°54′45″W / 54.187839°N 1.9126169°W / 54.187839; -1.9126169 (Scar House Reservoir)	10,069,000	1921	1936
171	Seathwaite Tarn	England	Cumbria	SD2500098600 54°22′38″N 3°09′22″W / 54.377355°N 3.1561370°W / 54.377355; -3.1561370 (Seathwaite Tarn Reservoir)	2,945,000	1900	1907
59	Selset	England	County Durham	NY9180021100 54°35′06″N 2°07′42″W / 54.585031°N 2.1283928°W / 54.585031; -2.1283928 (Selset Reservoir)	15,320,000	1955	1960
223	Shustoke Lower	England	Warwickshire	SP2280091200 52°31′06″N 1°39′56″W / 52.518210°N 1.6654290°W / 52.518210; -1.6654290 (Shustoke Lower Reservoir)	1,921,000	1870^{[lower-roman 4]}	1884
150	Siblyback	England	Cornwall	SX2320070300 50°30′21″N 4°29′41″W / 50.505737°N 4.4946487°W / 50.505737; -4.4946487 (Siblyback Reservoir)	3,364,000	1965	1969
62	Silent Valley	Northern Ireland	County Down	SB3865978967 54°08′24″N 6°00′10″W / 54.139876°N 6.0027439°W / 54.139876; -6.0027439 (Silent Valley Reservoir)	13,638,270	1910	1933
97	Staines North	England	Surrey	TQ0500073600 51°27′06″N 0°29′25″W / 51.451658°N 0.49030334°W / 51.451658; -0.49030334 (Staines North Reservoir)	6,940,000	1898^{[lower-roman 4]}	1902
94	Staines South	England	Surrey	TQ0500072500 51°26′30″N 0°29′26″W / 51.441771°N 0.49062937°W / 51.441771; -0.49062937 (Staines South Reservoir)	7,469,000	1898^{[lower-roman 4]}	1902
99	Staunton Harold	England	Derbyshire	SK3767923473 52°48′27″N 1°26′33″W / 52.807498°N 1.4424902°W / 52.807498; -1.4424902 (Staunton Harold Reservoir)	6,655,000	1958^{[lower-roman 6]}	1964
115	Stithians	England	Cornwall	SW7190036400 50°11′01″N 5°11′47″W / 50.183607°N 5.1965073°W / 50.183607; -5.1965073 (Stithians Reservoir)	5,420,000	1955^{[lower-roman 6]}	1967
68	Stocks	England	Lancashire	SD7200054600 53°59′12″N 2°25′43″W / 53.986684°N 2.4284992°W / 53.986684; -2.4284992 (Stocks Reservoir)	11,800,000	1910	1932
203	Strines	England	South Yorkshire	SK2320090500 53°24′39″N 1°39′09″W / 53.410806°N 1.6524541°W / 53.410806; -1.6524541 (Strines Reservoir)	2,239,000	1853^{[lower-roman 4]}	1869
184	Sutton Bingham	England	Somerset	ST5540011400 50°54′01″N 2°38′08″W / 50.900343°N 2.6356000°W / 50.900343; -2.6356000 (Sutton Bingham Reservoir)	2,600,000	1952	1955
138	Swinsty	England	North Yorkshire	SE1960053400 53°58′35″N 1°42′10″W / 53.976296°N 1.7026564°W / 53.976296; -1.7026564 (Swinsty Reservoir)	3,936,000	1871	1877
204	Swithland	England	Leicestershire	SK5570014800 52°43′41″N 1°10′36″W / 52.727983°N 1.1766534°W / 52.727983; -1.1766534 (Swithland Reservoir)	2,227,540	1890	1896
180	"Tadcaster, Hackenby, North Ings and Cock Beck"	England	North Yorkshire	SE4950042000 53°52′19″N 1°14′55″W / 53.871853°N 1.2486563°W / 53.871853; -1.2486563	2,748,750	NA	NA
66	Talla	Scotland	Scottish Borders	NT1171721532 55°28′47″N 3°23′54″W / 55.479603°N 3.3983738°W / 55.479603; -3.3983738 (Talla Reservoir)	12,020,000	1897	1905
67	Talybont	Wales	Powys	SO1060020500 51°52′33″N 3°18′00″W / 51.875877°N 3.3000529°W / 51.875877; -3.3000529 (Talybont Reservoir)	11,921,000	1930	1939
221	Tanygrisiau	Wales	Gwynedd	SH6830044700 52°59′00″N 3°57′47″W / 52.983408°N 3.9631826°W / 52.983408; -3.9631826 (Tanygrisiau Reservoir)	1,970,000	1952^{[lower-roman 6]}	1963
25	Thirlmere	England	Cumbria	NY3100019000 54°33′41″N 3°04′07″W / 54.561506°N 3.0685524°W / 54.561506; -3.0685524 (Thirlmere Reservoir)	40,714,000	1879^{[lower-roman 6]}	1894
92	Thruscross	England	North Yorkshire	SE1520057800 54°00′58″N 1°46′10″W / 54.015989°N 1.7695224°W / 54.015989; -1.7695224 (Thruscross Reservoir)	7,800,000	1955^{[lower-roman 6]}	1966
101	Tittesworth	England	Staffordshire	SJ9930058700 53°07′32″N 2°00′43″W / 53.125468°N 2.0119145°W / 53.125468; -2.0119145 (Tittesworth Reservoir)	6,440,000	1858	1858
98	Torside	England	Derbyshire	SK0560098300 53°28′53″N 1°55′02″W / 53.481393°N 1.9170845°W / 53.481393; -1.9170845 (Torside Reservoir)	6,700,000	1848	1864
192	Tunstall	England	County Durham	NZ0650040800 54°45′44″N 1°54′02″W / 54.762095°N 1.9005097°W / 54.762095; -1.9005097 (Tunstall Reservoir)	2,360,000	1873	1879
169	Underbank	England	South Yorkshire	SK2530099200 53°29′20″N 1°37′13″W / 53.488908°N 1.6201667°W / 53.488908; -1.6201667 (Underbank Reservoir)	2,955,000	1897	1904
71	Usk	Wales	Carmarthenshire / Powys	SN8217428549 51°56′35″N 3°42′56″W / 51.942925°N 3.7155557°W / 51.942925; -3.7155557 (Usk Reservoir)	11,235,000	1950	1955
182	Vale House	England	Derbyshire	SK0326097420 53°28′25″N 1°57′08″W / 53.473502°N 1.9523536°W / 53.473502; -1.9523536 (Vale House Reservoir)	2,688,000	1848	1870
15	Vyrnwy	Wales	Powys	SJ0180019300 52°45′44″N 3°27′24″W / 52.762346°N 3.4567214°W / 52.762346; -3.4567214 (Vyrnwy Reservoir)	59,852,000	1879^{[lower-roman 1]}	1888
252	Walthamstow No.4	England	Greater London	TQ3540089100 51°35′04″N 0°02′50″W / 51.584498°N 0.047100199°W / 51.584498; -0.047100199 (Walthamstow No.4 Reservoir)	680,000	1853^{[lower-roman 4]}	1866^{[lower-roman 5]}
253	Walthamstow No.5	England	Greater London	TQ3550088600 51°34′48″N 0°02′45″W / 51.579981°N 0.045850528°W / 51.579981; -0.045850528 (Walthamstow No.5 Reservoir)	680,000	1853^{[lower-roman 4]}	1866^{[lower-roman 5]}
179	Walton - Bessborough	England	Surrey	TQ1220068000 51°24′00″N 0°23′19″W / 51.399946°N 0.38850014°W / 51.399946; -0.38850014 (Walton - Bessborough Reservoir)	2,757,000	1898	1907
228	Walton - Knight	England	Surrey	TQ1170068000 51°24′00″N 0°23′44″W / 51.400044°N 0.39568466°W / 51.400044; -0.39568466 (Walton - Knight Reservoir)	1,857,000	1898	1907
216	Waskerley	England	County Durham	NZ0250044300 54°47′37″N 1°57′46″W / 54.793583°N 1.9626426°W / 54.793583; -1.9626426 (Waskerley Reservoir)	2,046,500	1877	1877
156	Watergrove	England	Greater Manchester	SD9100017700 53°39′21″N 2°08′16″W / 53.655715°N 2.1376509°W / 53.655715; -2.1376509 (Watergrove Reservoir)	3,273,000	1930	1938
120	Wayoh	England	Lancashire	SD7370016400 53°38′36″N 2°23′57″W / 53.643443°N 2.3992954°W / 53.643443; -2.3992954 (Wayoh Reservoir)	5,100,000	1865^{[lower-roman 6]}	1876
112	Weirwood	England	East Sussex	TQ4060035300 51°05′59″N 0°00′24″E / 51.099772°N 0.0066761370°E / 51.099772; 0.0066761370 (Weirwood Reservoir)	5,623,000	1950	1954
235	Wentwood	Wales	Newport	ST4300092900 51°37′55″N 2°49′30″W / 51.632009°N 2.8249355°W / 51.632009; -2.8249355 (Wentwood Reservoir)	1,739,000	1896	1904
117	West Moor Reservoir	England	Somerset	ST4160032600 51°05′23″N 2°50′07″W / 51.089725°N 2.8352377°W / 51.089725; -2.8352377 (West Moor Reservoir)	5,359,000	NA	NA
255	West Warwick	England	Greater London	TQ3460088300 51°34′39″N 0°03′32″W / 51.577501°N 0.058946209°W / 51.577501; -0.058946209 (West Warwick Reservoir)	639,000	1853^{[lower-roman 4]}	1900^{[lower-roman 5]}
151	West Water	Scotland	Scottish Borders	NT1173052377 55°45′24″N 3°24′29″W / 55.756672°N 3.4080668°W / 55.756672; -3.4080668 (West Water Reservoir)	3,364,000	1966	1969
199	Wet Sleddale	England	Cumbria	NY5530011600 54°29′52″N 2°41′30″W / 54.497744°N 2.6916824°W / 54.497744; -2.6916824 (Wet Sleddale Reservoir)	2,282,000	1880^{[lower-roman 6]}	1966
247	White Holme	England	West Yorkshire	SD9710019900 53°40′32″N 2°02′43″W / 53.675560°N 2.0453756°W / 53.675560; -2.0453756 (White Holme Reservoir)	1,601,000	1807^{[lower-roman 4]}	1816
133	Whiteadder	Scotland	East Lothian	NT6540063500 55°51′48″N 2°33′16″W / 55.863430°N 2.5543847°W / 55.863430; -2.5543847 (Whiteadder Reservoir)	4,239,000	1959^{[lower-roman 5]}	1968
172	Widdop	England	West Yorkshire	SD9300033000 53°47′36″N 2°06′28″W / 53.793263°N 2.1077415°W / 53.793263; -2.1077415 (Widdop Reservoir)	2,912,000	1872	1878
219	Willen Lake	England	Buckinghamshire	SP8810040900 52°03′34″N 0°42′59″W / 52.059485°N 0.71640948°W / 52.059485; -0.71640948 (Willen Lake Reservoir)	2,004,000	1967	1972
56	William Girling	England	Greater London	TQ3670094100 51°37′45″N 0°01′35″W / 51.629115°N 0.026400980°W / 51.629115; -0.026400980 (William Girling Reservoir)	16,500,000	1935^{[lower-roman 5]}	1951
46	Wimbleball	England	Somerset	SS9670029300 51°03′13″N 3°28′31″W / 51.053723°N 3.4752172°W / 51.053723; -3.4752172 (Wimbleball Reservoir)	21,541,000	1968	1979
87	Winscar	England	South Yorkshire	SE1530002600 53°31′11″N 1°46′15″W / 53.519852°N 1.7707125°W / 53.519852; -1.7707125 (Winscar Reservoir)	8,300,000	1970^{[lower-roman 6]}	1975
131	Woodhead	England	Derbyshire	SK0820099400 53°29′28″N 1°52′40″W / 53.491247°N 1.8778781°W / 53.491247; -1.8778781 (Woodhead Reservoir)	4,700,000	1848	1877
38	Wraysbury	England	Surrey	TQ0250074500 51°27′37″N 0°31′34″W / 51.460205°N 0.52600813°W / 51.460205; -0.52600813 (Wraysbury Reservoir)	26,910,000	1945^{[lower-roman 6]}	1970
158	Yarrow^{[lower-roman 5]}	England	Lancashire	SD6240015500 53°38′05″N 2°34′12″W / 53.634662°N 2.5701051°W / 53.634662; -2.5701051 (Yarrow Reservoir)	3,252,000	1850	1877
155	Ystradfellte	Wales	Powys	SN9460017500 51°50′46″N 3°31′53″W / 51.846116°N 3.5314738°W / 51.846116; -3.5314738 (Ystradfellte Reservoir)	3,277,000	1902^{[lower-roman 6]}	1914

Largest in England and Wales (2012)

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

Notes

1 2 3 4 5 6 Parliamentary approval of scheme
1 2 3 4 5 6 7 8 Associated with inception of North of Scotland Hydro Electric Board
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Start of hydroelectric production - Hydro Electric Development (Scotland) Act 1943
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 48 Associated with act that gave an authority powers
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 The Environmental Information Data Centre source used states the sources they used could be dubious for parts (or this part) of this entry
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 First mention of scheme on Hansard

References

1 2 Durant, M.J.; Counsell, C.J. (20 July 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 10 April 2023 Data downloadable with registration
↑ Elan dams: Specifications Archived 20 February 2013 at the Wayback Machine at Elan Valley Trust official website. Accessed 27 November 2013
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 Environment Agency. "Public Register of Reservoirs". {{cite journal}}: Cite journal requires |journal= (help) Compiles a database of reservoirs in England and Wales.
↑ "Raw Water Storage Levels 15 August 2022 | Reservoir levels | About Us | Severn Trent Water". www.stwater.co.uk. Retrieved 2022-08-20.

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[Parliamentary_approval-2] 1 2 3 4 5 6 Parliamentary approval of scheme

[Associated_inception-3] 1 2 3 4 5 6 7 8 Associated with inception of North of Scotland Hydro Electric Board

[HED_(Scotland)_Act_1943-4] 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Start of hydroelectric production - Hydro Electric Development (Scotland) Act 1943

[Associated_act-5] 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 48 Associated with act that gave an authority powers

[Dubious-6] 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 The Environmental Information Data Centre source used states the sources they used could be dubious for parts (or this part) of this entry

[First_Hansard-7] 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 First mention of scheme on Hansard

[UK-1] 1 2 Durant, M.J.; Counsell, C.J. (20 July 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 10 April 2023 Data downloadable with registration

[8] Elan dams: Specifications Archived 20 February 2013 at the Wayback Machine at Elan Valley Trust official website. Accessed 27 November 2013

[Chao-9] 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 Environment Agency. "Public Register of Reservoirs". {{cite journal}}: Cite journal requires |journal= (help) Compiles a database of reservoirs in England and Wales.

[10] "Raw Water Storage Levels 15 August 2022 | Reservoir levels | About Us | Severn Trent Water". www.stwater.co.uk. Retrieved 2022-08-20.

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Reservoirs accounting for 90% storage

Largest in England and Wales (2012)

See also

Notes

References