List of dams and reservoirs in the United Kingdom

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

England

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

Hampshire

• Havant Thicket Reservoir - under construction, scheduled to open 2029.

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

• Brent Reservoir (also known as the Welsh Harp)
• Grand Junction Reservoir
• Stain Hill Reservoirs
• Stoke Newington West Reservoir
• Woodberry Wetlands (Originally the Woodberry Down/Stoke Newington East Reservoir)
• Sunnyside Reservoir

The following reservoirs form the Lee Valley Reservoir Chain.

• 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
• (Upper and Lower) Chellow Dene Reservoirs
• 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

Northern Ireland

County Down

• Silent Valley Reservoir
• Spelga Reservoir

Scotland

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) (Loch Sloy Hydro-Electric Scheme) - 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 (Lussa Hydro-Electric Scheme) - 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
• Stanely Reservoir

Scottish Borders

• Acreknowe Reservoir
• Alemoor Loch
• Baddinsgill Reservoir
• Fruid Reservoir
• Megget Reservoir
• Talla Reservoir
• Watch Fly Reservoir
• Westwater Reservoir
• Williestruther Loch

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

Wales

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

See also

• Ofwat
• List of dams and reservoirs
• List of reservoirs in the United Kingdom by volume
• Geography of the United Kingdom
• List of lakes in England
• List of loughs in Ireland
• List of lochs in Scotland
• List of lakes in Wales
• List of rivers of the United Kingdom
• Waterways in the United Kingdom

References