List of dams and reservoirs in the United Kingdom

This is a list of dams and reservoirs in the United Kingdom.

Buckinghamshire

 * Foxcote Reservoir, north of Buckingham
 * Weston Turville Reservoir, between Weston Turville and Wendover

Cambridgeshire

 * Grafham Water

Cheshire

 * Bollinhurst Reservoir
 * Bosley Reservoir, Bosley
 * Horse Coppice Reservoir
 * Lamaload Reservoir, east of Macclesfield
 * Lymm Dam, Lymm.
 * Ridgegate Reservoir and Trentabank Reservoir, south-east of Macclesfield
 * Sutton Reservoir, south of Macclesfield

Cornwall

 * Argal and College Reservoirs, Falmouth
 * Boscathnoe Reservoir, Penzance
 * Bussow Reservoir, St Ives
 * Cargenwen Reservoir
 * Colliford Lake, Bodmin Moor
 * Crowdy Reservoir, Bodmin Moor
 * Drift Reservoir, Penzance
 * Porth Reservoir, Newquay
 * Siblyback Lake, Bodmin Moor
 * Stithians Reservoir
 * Upper Tamar Lake (Devon and Cornwall)

County Durham

 * Balderhead Reservoir
 * Blackton Reservoir
 * Burnhope Reservoir
 * Derwent Reservoir
 * Grassholme Reservoir
 * Hisehope Reservoir
 * Hurworth Burn Reservoir
 * Hury Reservoir
 * Selset Reservoir
 * Smiddy Shaw Reservoir
 * Tunstall Reservoir
 * Waskerley Reservoir

Cumbria

 * Borrans Reservoir, north of Windermere (town)
 * Castle Carrock Reservoir
 * Chapelhouse Reservoir, south-east of Uldale
 * Cow Green Reservoir east of Dufton Fell
 * Dubbs Reservoir, north of Windermere (town)
 * Ennerdale Water
 * Fisher Tarn east of Kendal
 * Harlock Reservoir, Pennington Reservoir, Poaka Beck Reservoir west of the town of Ulverston
 * Haweswater Reservoir
 * Hayeswater
 * Kentmere Reservoir
 * Killington Reservoir
 * Meadley Reservoir, by Flat Fell, Ennerdale, Cumbria
 * Simpson Ground Reservoir, east of Newby Bridge
 * Thirlmere
 * Wet Sleddale Reservoir

Derbyshire

 * Butterley Reservoir
 * Codnor Reservoir
 * Carsington Water
 * Combs Reservoir
 * Errwood Reservoir
 * Fernilee Reservoir
 * Foremark Reservoir
 * Hurst Reservoir
 * Kinder Reservoir
 * Linacre Reservoirs
 * Upper Reservoir
 * Middle Reservoir
 * Lower Reservoir
 * Longdendale Chain of reservoirs
 * Arnfield Reservoir
 * Hollingworth Reservoir now drained and a nature reserve
 * Bottoms Reservoir
 * Valehouse Reservoir
 * Rhodeswood Reservoir
 * Torside Reservoir
 * Woodhead Reservoir
 * Loscoe Dam
 * Mossy Lea Reservoir
 * Ogston Reservoir
 * Staunton Harold Reservoir
 * Swineshaw Reservoir (Derbyshire)
 * Toddbrook Reservoir
 * Upper Derwent Valley
 * Ladybower Reservoir
 * Derwent Reservoir with Birchinlee
 * Howden Reservoir Eastern half is in Sheffield (South Yorkshire)
 * Upper Swineshaw Reservoir (Derbyshire)

Devon

 * Avon Dam Reservoir
 * Burrator Reservoir
 * Challacombe/Bray Reservoir
 * Butter Brook Reservoir
 * Darracott Reservoir
 * Fernworthy Reservoir
 * Gammaton Reservoirs
 * Holywell Reservoir
 * Jennetts Reservoir
 * Kennick Reservoir
 * Lower Tamar Lake
 * Melbury Reservoir
 * Meldon Reservoir
 * River Tavy Reservoir
 * Roadford Lake
 * Slade Reservoir
 * Squabmoor reservoir
 * Tottiford Reservoir
 * Trenchford Reservoir
 * Upper Tamar Lake (Devon and Cornwall)
 * Venford Reservoir
 * Wheal Jewell Reservoir
 * Wistlandpound Reservoir

East Sussex

 * Arlington Reservoir
 * Darwell Reservoir
 * Powdermill Reservoir

Essex

 * Abberton Reservoir
 * Ardleigh Reservoir
 * Hanningfield Reservoir

Gloucestershire

 * Dowdeswell Reservoir
 * Witcombe Reservoir

Greater Manchester

 * Bolton:
 * Belmont Reservoir
 * Bryan Hey Reservoir
 * Dean Mills Reservoir
 * High Rid Reservoir
 * Lower Rivington Reservoir
 * Rumworth Lodge Reservoir
 * Upper Rivington Reservoir
 * Bury
 * Lowercroft Reservoir
 * Manchester, Bolton and Bury Reservoir (Elton Reservoir)
 * Manchester:
 * Gorton Reservoirs
 * Heaton Park Reservoir
 * Oldham:
 * Ashworth Moor Reservoir
 * Besom Hill Reservoir
 * Black Moss Reservoir (Greater Manchester)
 * Brownhouse Wham Reservoir
 * Brushes Clough Reservoir
 * Castleshaw Reservoir
 * Chew_Reservoir
 * Crook Gate Reservoir
 * Diggle Reservoir
 * Dovestones Reservoir
 * Dowry Reservoir
 * Greenfield Reservoir
 * Hamer Pasture Reservoir
 * New Years Bridge Reservoir
 * Readycon Dean Reservoir
 * Strinesdale Reservoir
 * Yeoman Hey Reservoir
 * Rochdale:
 * Ashworth Moor Reservoir
 * Blackstone Edge Reservoir
 * Chelburn Reservoir
 * Greenbooth Reservoir
 * Hanging Lees Reservoir
 * Hollingworth Lake
 * Kitcliffe Reservoir
 * Light Hazzles Reservoir
 * Lower Chelburn Reservoir
 * Naden Reservoirs (Higher, Middle and Lower)
 * Norman Hill Reservoir
 * Ogden Reservoir
 * Piethorne Reservoir
 * Rooden Reservoir
 * Watergrove Reservoir
 * Tameside:
 * Audenshaw Reservoirs
 * Brushes Reservoir
 * Denton Reservoirs
 * Godley Reservoir
 * Higher Swineshaw Reservoir
 * Lower Swineshaw Reservoir
 * Swineshaw Reservoirs
 * Walkerwood Reservoir
 * Wigan:
 * Worthington Lakes

Hertfordshire

 * Tring Reservoirs

Kent

 * Bough Beech
 * Bewl Water

Lancashire

 * Anglezarke Reservoir
 * Belmont Reservoir
 * Black Moss Reservoirs
 * Calf Hey Reservoir
 * Cowm Reservoir
 * Delph Reservoir
 * Dingle Reservoir
 * Foulridge Reservoir
 * High Bullough Reservoir
 * Holden Wood Reservoir
 * Jumbles Reservoir
 * Lower Rivington Reservoir
 * Lower Roddlesworth Reservoir
 * Lower Ogden Reservoir
 * Rake Brook Reservoir
 * Spring Mill Reservoir
 * Springs Reservoir
 * Stocks Reservoir
 * Turton and Entwistle Reservoir
 * Upper Ogden Reservoir
 * Upper Rivington Reservoir
 * Upper Roddlesworth Reservoir
 * Walves Reservoir
 * Ward's Reservoir (Blue Lagoon)
 * Watersheddles Reservoir (owned by Yorkshire Water)
 * Wayoh Reservoir
 * Yarrow Reservoir

Leicestershire

 * Blackbrook Reservoir
 * Eyebrook Reservoir (Corby)
 * Cropston Reservoir
 * Knipton Reservoir
 * Nanpantan Reservoir
 * Saddington Reservoir
 * Staunton Harold Reservoir
 * Swithland Reservoir
 * Thornton Reservoir

Lincolnshire

 * Covenham Reservoir
 * Denton Reservoir
 * Knipton Reservoir

London
The following reservoirs form the Lee Valley Reservoir Chain.
 * Brent Reservoir (also known as the Welsh Harp)
 * Grand Junction Reservoir
 * Stain Hill Reservoirs
 * Stoke Newington West Reservoir
 * Sunnyside Reservoir
 * King George's Reservoir, London Borough of Enfield (also known as King George V Reservoir)
 * William Girling Reservoir, London Borough of Enfield
 * Banbury Reservoir, London Borough of Waltham Forest
 * Lockwood Reservoir, London Borough of Waltham Forest
 * High Maynard Reservoir, London Borough of Waltham Forest
 * Low Maynard Reservoir, London Borough of Waltham Forest
 * Walthamstow Reservoirs, London Borough of Waltham Forest, five linked numbered reservoirs
 * East Warwick Reservoir, London Borough of Waltham Forest
 * West Warwick Reservoir, London Borough of Waltham Forest

Northamptonshire

 * Barby Storage Reservoir
 * Boddington Reservoir, Oxford canal supply reservoir, Upper Boddington
 * Cransley Reservoir (Kettering)
 * Daventry Reservoir in Daventry Country Park
 * Drayton Reservoir (Daventry)
 * Hollowell reservoir Hollowell
 * Naseby Reservoir, Grand Union Canal supply, Naseby
 * Pitsford Water
 * Ravensthorpe Reservoir
 * Stanford Reservoir, between Stanford-on-Avon and South Kilworth
 * Sulby Reservoir
 * Sywell Reservoir
 * Thorpe Malsor Reservoir (Kettering)
 * Welford Reservoir

Northumberland

 * Bakethin Reservoir
 * Catcleugh Reservoir
 * Colt Crag Reservoir
 * Fontburn
 * Hallington Reservoirs
 * Little Swinburne Reservoir
 * Kielder Water
 * Whittle Dene

North Yorkshire

 * Angram Reservoir
 * Beaver Dyke Reservoirs
 * Chelker Reservoir
 * Cod Beck Reservoir
 * Elslack Reservoir
 * Embsay Reservoir
 * Fewston Reservoir
 * Gouthwaite Reservoir
 * Grimwith Reservoir
 * Laneshaw Reservoir
 * Leighton Reservoir
 * Lindley Wood Reservoir
 * Lockwood Beck Reservoir
 * Lower Barden Reservoir
 * Lumley Moor Reservoir
 * March Ghyll Reservoir
 * Mossy Moor Reservoir
 * Oulston Reservoir
 * Roundhill Reservoir
 * Scaling Dam Reservoir
 * Scar House Reservoir
 * Scargill Reservoir
 * Swinsty Reservoir
 * Ten Acre Reservoir
 * Thornton Steward Reservoir
 * Thruscross Reservoir
 * Upper Barden Reservoir
 * Winterburn Reservoir

Oxfordshire

 * Clattercote Reservoir (Banbury)
 * Farmoor Reservoir (Oxford)
 * Grimsbury Reservoir,(Banbury)

Rutland

 * Rutland Water

Shropshire

 * Chelmarsh Reservoir
 * Knighton Reservoir

Somerset

 * Ashford Reservoir
 * Barrow Gurney Tanks
 * Blagdon Lake
 * Chard Reservoir
 * Cheddar Reservoir
 * Chew Valley Lake
 * Clatworthy Reservoir
 * Durleigh reservoir
 * Hawkridge Reservoir
 * Leigh Reservoir
 * Litton Reservoirs
 * Luxhay Reservoir
 * Nutscale Reservoir
 * Otterhead Lakes
 * Sutton Bingham Reservoir
 * Wimbleball Lake

South Yorkshire

 * Agden Reservoir
 * Broadstone Reservoir
 * Broomhead Reservoir
 * Dale Dyke Reservoir
 * Damflask Reservoir
 * Elsecar Reservoir
 * Harthill Reservoir, feeder for the Chesterfield canal
 * Howden Reservoir Western half is in Derbyshire
 * Ingbirchworth Reservoir
 * Langsett Reservoir
 * Midhope Reservoir
 * More Hall Reservoir
 * Pebley Reservoir (Sheffield)
 * Redmires Reservoirs
 * Rivelin Dams
 * Royd Moor Reservoir
 * Scout Dyke Reservoir
 * Snailsden Reservoir
 * Strines Reservoir
 * Ulley Reservoir
 * Underbank Reservoir
 * Weecher Reservoir
 * Wharncliffe Reservoir
 * Windleden Reservoirs
 * Winscar Reservoir
 * Worsbrough Reservoir

Staffordshire

 * Bathpool Park Lake
 * Belvide Reservoir
 * Betley Hall Reservoir
 * Blithfield Reservoir
 * Bromley Mill Pool
 * Brookleys Lake
 * Canwell Estate Reservoir
 * Chasewater
 * Gailey Reservoir
 * Gap Pool
 * Hales Hall Pool
 * Hatherton Reservoir
 * Hanch Reservoir
 * Holly Bush Lake
 * Knypersley Reservoir
 * Minster Pool
 * Rudyard Lake
 * Stowe Pool
 * Swinfen Lake
 * Tixall Park Pool
 * Trentham Gardens Lake
 * Tittesworth Reservoir

Surrey

 * Bessborough Reservoir
 * Island Barn Reservoir
 * King George VI Reservoir
 * Knight Reservoir
 * Molesey Reservoirs
 * Queen Elizabeth II Reservoir
 * Queen Mary Reservoir
 * Queen Mother Reservoir
 * Staines Reservoirs
 * Wraysbury Reservoir

Suffolk

 * Alton Water

Warwickshire

 * Draycote Water
 * Napton Reservoir, Grand Union Canal
 * Oldbury Reservoir
 * Packington Lakes, Grand Union Canal
 * Shustoke Reservoirs
 * Stockton Reservoir, Grand Union Canal
 * Wormleighton Reservoir

West Midlands

 * Bartley Reservoir (Birmingham)
 * Brookvale Park Lake (Birmingham)
 * Edgbaston Reservoir (Birmingham)
 * Frankley Reservoir (Birmingham)
 * Lifford Reservoir (Birmingham)
 * Netherton Reservoir, Dudley
 * Olton Reservoir, Solihull
 * Perry Barr Reservoir (covered) (Birmingham)
 * Witton Lakes (Birmingham)
 * see also Elan Valley Reservoirs (Wales) which were built by, and supply, Birmingham

West Sussex

 * Ardingly Reservoir
 * Weir Wood Reservoir

West Yorkshire

 * Ardsley Reservoir
 * Baitings Reservoir
 * Bilberry Reservoir
 * Blackmoorfoot Reservoir
 * Black Moss Reservoir
 * Blakeley Reservoir
 * Booth Dean Upper Reservoir
 * Booth Dean Lower Reservoir
 * Booth Wood Reservoir
 * Boshaw Whams Reservoir
 * Brownhill Reservoir
 * Butterley Reservoir
 * Chelker Reservoir
 * Cupwith Reservoir
 * Dean Head Upper Reservoir
 * Dean Head Lower Reservoir
 * Dean Head Reservoir
 * Deer Hill Reservoir
 * Digley Reservoir
 * Doe Park Reservoir
 * Eccup Reservoir
 * Eldwick Reservoir
 * Elslack Reservoir
 * Gorple Lower Reservoir
 * Gorple Upper Reservoir
 * Graincliffe Reservoir
 * Green Withens Reservoir
 * Hewenden Reservoir
 * Holme Styes Reservoir
 * Keighley Moor Reservoir
 * Leeming Reservoir
 * Leeshaw Reservoir
 * Lower Laithe Reservoir
 * March Ghyll Reservoir
 * March Hey Reservoir
 * Mixenden Reservoir
 * Ogden Reservoir
 * Panorama Reservoir
 * Ponden Reservoir
 * Ramsden Reservoir
 * Redbrook Reservoir
 * Reva Reservoir
 * Riding Wood Reservoir
 * Ringstone Edge Reservoir
 * Ryburn Reservoir
 * Scammonden Reservoir
 * Silsden Reservoir
 * Stubden Reservoir
 * Sunnydale Reservoir
 * Swellands Reservoir
 * Thornton Moor Reservoir
 * Walshaw Dean Reservoirs
 * Warland Reservoir (Mostly in West Yorkshire, partly in Greater Manchester)
 * Warley Moor Reservoir
 * Weecher Reservoir
 * Wessenden Reservoir
 * Wessenden Head Reservoir
 * Widdop Reservoir
 * Yateholme Reservoir

Wiltshire

 * Wilton Water header reservoir for the Kennet and Avon Canal

Worcestershire

 * Bittell Reservoirs (Upper and Lower)
 * Tardebigge Reservoir

County Down

 * Silent Valley Reservoir
 * Spelga Reservoir

City of Aberdeen

 * Braeside Reservoir
 * Cattofield Reservoir
 * Mannofield Reservoir
 * Slopefield Reservoir
 * Smithfield Reservoir

Aberdeenshire

 * Bluehills Reservoir
 * Clochandighter Reservoir
 * Garlogie Dam
 * Inchgarth Reservoir - Cults
 * Loch of Aboyne
 * Loch Saugh
 * Silver Dam aka Culter Compensation Dam

Angus

 * Backwater Reservoir
 * Brewlands Reservoir
 * Crombie Reservoir
 * Den of Ogil
 * Glenogil
 * Kinnaird Lake
 * Ledcrieff Loch
 * Linrathen
 * Linrathen Clear Water Storage
 * Loch Auchintaple or Auchintaple Loch
 * Loch Lee
 * Loch Shandra
 * Long Loch
 * Monikie Clear Water Basin
 * Monikie North Pond
 * Monikie South (Island) Pond
 * Piperdam Loch

Argyll and Bute

 * Allt na Lairige - Glen Fyne
 * Ardlussa Fishing Loch - Isle of Jura
 * Asgog Loch - Tighnabruaich
 * Aucha Lochy - Campbeltown
 * Auchengaich Reservoir - Glen Fruin
 * Beochlich - 9 km NW of Inveraray
 * Bishop's Glen Reservoir (also known as Dunoon Reservoir) - Dunoon
 * Blackmill Loch - Minard
 * Cam Loch - North Knapdale
 * Craignafeich Reservoirs - Tighnabruaich
 * Crarae Reservoir - Minard
 * Crosshill Loch - Campbeltown
 * Cruachan Reservoir - Loch Awe
 * Daill Loch - North Knapdale
 * Dhu Loch - Bute
 * Feorlin - Minard
 * Gleann Dubh - Barcaldine
 * Gleann Loch - North Knapdale
 * Helensburgh No. 1 Reservoir - Helensburgh
 * Helensburgh No. 2 Reservoir - Helensburgh
 * Kilduskland Reservoir - Ardrishaig
 * Kirk Dam - Bute
 * Knockruan Loch - Campbeltown
 * Leorin Loch - Port Ellen, Islay
 * Lindowan Reservoir - Kilcreggan
 * Loch A' Bharain - North Knapdale
 * Loch A' Chaorainn - South Knapdale
 * Loch Allan - Port Askaig, Islay
 * Loch a'Mhuillin - North Knapdale
 * Loch an Add - North Knapdale
 * Loch an Droighinn - Kilchrenan
 * Loch an Sgoltaire - Isle of Colonsay
 * Loch an Torr - Dervaig, Isle of Mull
 * Loch Ascog - Isle of Bute
 * Loch Assapol - Bunessan, Isle of Mull
 * Loch Awe - part of the Awe hydroelectric scheme
 * Loch Ba - Gruline, Isle of Mull
 * Loch Bearnoch - Lochdon, Isle of Mull
 * Loch Beinn Uraraidh - Port Ellen, Islay
 * Loch Cam - Bridgend, Isle of Islay
 * Loch Chaorunn - South Knapdale
 * Loch Ciaran - Clachan, North Kintyre
 * Loch Clachaig - North Knapdale
 * Loch Eck - Cowal
 * Loch Fad - Bute
 * Loch Finlas - 4 km SW Luss
 * Loch Gearach - Port Charlotte, Islay
 * Loch Glashan - Lochgair, Mid-Argyll
 * Loch Gleann - Oban
 * Loch Iarnan - Port Ellen, Islay
 * Loch Leacann - Furnace
 * Loch Lebdgei (Dubh Loch) - North Knapdale
 * Loch Lebgei - North Knapdale
 * Loch Na Bric - North Knapdale
 * Loch na Creige Crainde - North Knapdale
 * Loch Na Faoilinn - North Knapdale
 * Loch Na Sreinge - 9 km NE of Kilmelford
 * Loch Nam Ban - Port Askaig, Islay
 * Loch Nam Breac Buidhe - North Knapdale
 * Loch Nan Torran - South Knapdale
 * Loch Righeachan - Inveraray
 * Loch Skerrols - Bridgend, Isle of Islay
 * Loch Sloy (Reservoir) - 6 km N of Arrochar
 * Loch Tarsan - Glen Lean, Cowal
 * Loch Tralaig - Kilmelford
 * Loch Turamin (New Loch) - Isle of Colonsay
 * Loch Uigeadail - Port Ellen, Islay
 * Lochan A' Ghurrabain - Tobermory, Isle of Mull
 * Lochan Duin - North Knapdale
 * Lochan Ghlas - Garelochhead
 * Lochan Gleann Astaile - Isle of Jura
 * Lochan Lasgainn Mor - Kilmelford
 * Lower Glen Shira - 12 km NE of Inveraray
 * Luachrach Loch - Oban
 * Main Glen Shira - 13 km NE of Inveraray
 * Mishnish Lochs - Tobermory, Isle of Mull
 * Nant Reservoir - Kilchrenan
 * Oude Reservoir - Kilmelford
 * Powder Mill Dam - Tighnabruaich
 * Sholum Lochs - Port Ellen, Islay
 * Still Loch - Ardrishaig
 * Strathduie Water - Campbeltown

Clackmannanshire

 * Gartmorn Dam

Dumfries and Galloway

 * Carsfad Loch
 * Clatteringshaws Loch
 * Glenkiln Reservoir
 * Kettleton Reservoir
 * Black Esk Dam
 * Winterhope Reservoir

City of Dundee

 * Clatto Reservoir

East Ayrshire

 * Afton Reservoir
 * Corsehouse Reservoir
 * Craigendunton Reservoir
 * Glenbuck Loch
 * Loch Finlas

East Dunbartonshire

 * Bankell Reservoir - supplies Milngavie water treatment works
 * Craigmaddie Reservoir - supplies Milngavie water treatment works
 * Mugdock Reservoir - supplies Milngavie water treatment works

East Lothian

 * Hopes Reservoir
 * Lammerloch
 * Stobshiel Reservoir
 * Whiteadder Reservoir

East Renfrewshire

 * Balgray Reservoir
 * Littleton Reservoir
 * Ryat Linn Reservoir
 * Waulkmill Glen Reservoir
 * Walton Dam
 * Glanderston Dam
 * Snypes Dam
 * Kirkton Dam
 * Harelaw Reservoir, Fereneze Golf Course
 * Harelaw Reservoir, Eaglesham Moor
 * Rouken Glen Pond
 * Craighall Reservoir
 * Commore Dam
 * White Loch
 * Black Loch
 * Brother Loch
 * Little Loch
 * Pilmuir Reservoir
 * Loch Craig
 * Bennan Loch
 * Corsehouse Reservoir (on the border with East Ayrshire)
 * Long Loch
 * Loch Goin
 * Dunwan Loch
 * High Dam
 * Picketlaw Reservoir
 * Caplaw Dam (on the border with Renfrewshire)
 * Netherplace Reservoir (at the dye works)
 * Glenburn Reservoir

City of Edinburgh

 * Clubbiedean Reservoir
 * Harlaw Reservoir
 * Threipmuir Reservoir
 * Torduff Reservoir
 * Bonaly Reservoir

Falkirk

 * Faughlin Reservoir
 * Millhall Reservoir

Fife

 * Ballo Reservoir
 * Clatto Reservoir
 * Cameron Reservoir
 * Castlehill Reservoir
 * Drumain Reservoir
 * Holl Reservoir
 * Harperleas Reservoir
 * Stenhouse Loch
 * Carriston Reservoir
 * Donald Rose Reservoir
 * Carlhurlie Reservoir

City of Glasgow

 * Hogganfield Loch

Highland

 * Blackwater Reservoir, near Kinlochleven
 * Clunas Reservoir
 * Loch Benevean
 * Loch Laggan and Loch Treig - both part of the Lochaber hydroelectric scheme
 * Loch Monar - part of the Strathfarrar hydroelectric scheme
 * Loch Quoich and Loch Garry - both part of the Glen Garry hydroelectric scheme
 * Loch Loyne and Loch Cluanie - both part of the Glen Moriston hydroelectric scheme
 * Loch Mullardoch - part of the Glen Affric hydroelectric scheme
 * Loch Glascarnoch

Inverclyde

 * Loch Thom
 * Gryffe Reservoir
 * Harelaw Reservoir
 * Knocknair’shill Reservoir
 * Dougliehill Reservoir

Midlothian

 * Edgelaw Reservoir
 * Gladhouse Reservoir
 * Glencorse Reservoir
 * North Esk Reservoir
 * Rosebery Reservoir
 * Loganlea Reservoir

Moray

 * Glenlatterach Reservoir

North Ayrshire

 * Auldmuir Reservoir
 * Barcraigs Reservoir
 * Busbie Muir Reservoir
 * Caaf Reservoir
 * Camphill Reservoir
 * Cuffhill Reservoir
 * Glenburn Reservoir
 * Kelly Reservoir
 * Knockendon Reservoir
 * Kirkleegreen Reservoir
 * Mill Glen Reservoir
 * Muirhead Reservoir
 * Munnoch Reservoir
 * Outerwards Reservoir
 * Skelmorlie Lower Reservoir
 * Skelmorlie Upper Reservoir

North Lanarkshire

 * Birkenburn
 * Broadwood Loch
 * Daer
 * Dalmacoulter
 * Forrestburn
 * Glenhove No. 1
 * Glenhove No. 2
 * Hillend Loch
 * Lilly Loch
 * Roughrigg
 * Strathclyde Park
 * Townhead Reservoir
 * West Corrie

Orkney

 * Wideford Hill Reservoir (drained)
 * Stromness Waterworks

Perth and Kinross

 * Dunalastair Water
 * Loch Tummel - part of the Tummel Valley hydroelectric scheme
 * Loch Turret Reservoir and Glenturret Dam. Near Crieff
 * Lower Glendevon Reservoir
 * Upper Glendevon Reservoir

Renfrewshire

 * Rowbank Reservoir

Scottish Borders

 * Alemoor Loch
 * Baddinsgill Reservoir
 * Fruid Reservoir
 * Megget Reservoir
 * Talla Reservoir
 * Westwater Reservoir

Shetland

 * Sandy Loch Reservoir

South Ayrshire

 * Bradan Service Reservoir
 * Collenan
 * Glendrissaigh
 * Loch Bradan
 * Loch Riecawr
 * Loch Spallander
 * Loch Spouts
 * Penwhapple
 * Raith

South Lanarkshire

 * Camps Reservoir
 * Culter Waterhead Reservoir

Stirling

 * Cocksburn Reservoir
 * Earlsburn Reservoir
 * North Third Reservoir

West Dunbartonshire

 * Cochno Loch
 * Jaw Reservoir
 * Greenside Reservoir
 * Carman Reservoir
 * Kilmannan Reservoir (on the border with Stirling)
 * Burncrooks Reservoir (on the border with Stirling)

West Lothian

 * Cobbinshaw Reservoir
 * Eliburn Reservoir
 * Harperrig Reservoir
 * Lochcote Reservoir

Western Isles

 * Loch Mor an Stairr - Isle of Lewis
 * Roghadal Reservoir - Isle of Harris
 * Loch Chliostair - Isle of Harris

Anglesey

 * Llyn Alaw - water supply to much of north Anglesey
 * Llyn Cefni - water supply to central Anglesey

Bridgend

 * Kenfig Pool - Natural Lake

Cardiff

 * Llanishen Reservoir - water supply to Cardiff
 * Lisvane Reservoir - water Supply to Cardiff

Carmarthenshire

 * Upper and Lower Cwm Lliedi reservoirs also known as Swiss Valley reservoirs
 * Llyn Brianne
 * Llyn y Fan Fach
 * Usk Reservoir

Ceredigion

 * Dinas Reservoir
 * Teifi Pools
 * Llyn Teifi
 * Nant-y-moch Reservoir

Conwy

 * Llyn Bodgynydd - supply for the Pandora lead mine (disused)
 * Llyn Brenig - part of Dee Regulation system - also in Denbighshire
 * Llyn Coedty - water supply for Dolgarrog hydroelectric station
 * Llyn Conwy - water supply for Llanrwst and Betws-y-Coed
 * Llyn Cowlyd - water supply for Conwy and Colwyn Bay and for Dolgarrog hydroelectric station
 * Llyn Crafnant - water supply for Llanrwst
 * Llyn Dulyn - water supply for Llandudno
 * Llyn Melynllyn - water supply for Llandudno
 * Llyn Parc - supply for the Aberllyn mine (disused)
 * Llyn Elsi - water supply for Betws-y-Coed (disused)

Denbighshire

 * Aled Isaf Reservoir
 * Alwen Reservoir
 * Llyn Aled
 * Llyn Alwen
 * Llyn Brenig - part of the River Dee regulation system
 * Llyn Celyn - part of the River Dee regulation system.
 * Pendinas Reservoir
 * Bala Lake (Llyn Tegid)
 * Nant-y-Ffrith Reservoir

Gwynedd

 * Llyn Anafon - water supply for Llanfairfechan, Dwygyfylchi and Penmaenmawr
 * Llyn Arenig Fach
 * Llyn Arenig Fawr - water supply for Bala town
 * Llynnau Barlwyd - supply to Llechwedd slate quarry
 * Llyn Bodlyn - water supply to Barmouth.
 * Llyn Bowydd - supply to the Blaenau Ffestiniog slate quarries
 * Llyn Cwm Corsiog - supply for Rhosydd slate quarry (disused)
 * Llyn Cwellyn - water supply to Bangor and parts of south Anglesey
 * Marchlyn Mawr - header reservoir for the Dinorwig power station hydroelectric system.
 * Llyn Peris
 * Llyn Padarn - part of the Dinorwig hydroelectric system
 * Llyn Stwlan - built for the hydroelectric Ffestiniog Power Station
 * Llyn Trawsfynydd - built for the Maentwrog hydroelectric Power Station

Merthyr Tydfil

 * Llwyn-on Reservoir
 * Pontsticill Reservoir, including Pentwyn Reservoir

Neath Port Talbot

 * Eglwys Nunydd - water supply to Tata Steel Europe steel-works at Port Talbot

Pembrokeshire

 * Bosherston Lakes - artificial amenity lakes
 * Llys-y-Frân Reservoir
 * Rosebush Reservoir

Powys

 * Taff Fawr reservoirs- a chain of three reservoirs supplying the Rhondda and Taff valley and Cardiff with water
 * Beacons Reservoir
 * Cantref Reservoir
 * also see Llwyn-on Reservoir in Merthyr Tydfil
 * Taff Fechan reservoirs - a chain of four reservoirs also supplying the Taff valley and Cardiff with water
 * Upper Neuadd Reservoir
 * Lower Neuadd Reservoir
 * Doly y gaer Reservoir
 * Pontsticill Reservoir
 * Elan Valley Reservoirs - a group of reservoirs supplying Birmingham and parts of the West Midlands conurbation with drinking water
 * Claerwen Reservoir
 * Craig-goch Reservoir
 * Penygarreg Reservoir
 * Garreg-ddu Reservoir
 * Caban-coch Reservoir
 * Lake Vyrnwy (Llyn Efyrnwy) - supplies water to the Liverpool area
 * Talybont Reservoir
 * Ystradfellte Reservoir
 * Clywedog Reservoir (Llyn Clywedog)

Rhondda Cynon Taf

 * Lluest-wen Reservoir

Swansea

 * Cray Reservoir
 * Swansea Barrage
 * Upper and Lower Lliw Reservoirs

Torfaen

 * Llandegfedd Reservoir

Wrexham

 * Cae Llwyd Reservoir
 * Penycae Top Reservoir
 * Ty Mawr Reservoir