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List of dams and reservoirs in the United Kingdom facts for kids

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

England

Buckinghamshire

Cambridgeshire

Cheshire

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

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
  • 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

Essex

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:
  • Tameside:
    • Audenshaw Reservoirs
    • Brushes Reservoir
    • Denton Reservoirs
    • Godley Reservoir
    • Higher Swineshaw Reservoir
    • Lower Swineshaw Reservoir
    • Swineshaw Reservoirs
    • Walkerwood Reservoir
  • Wigan:
    • Worthington Lakes

Hertfordshire

Kent

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

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
  • Sunnyside Reservoir

The following reservoirs form the Lee Valley Reservoir Chain.

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

Shropshire

  • Chelmarsh Reservoir
  • Knighton Reservoir

Somerset

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

Suffolk

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

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

Worcestershire

Northern Ireland

County Down

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) - 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

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

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

Renfrewshire

  • Rowbank Reservoir

Scottish Borders

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

Carmarthenshire

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

Ceredigion

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

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

Neath 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
  • 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

Wrexham

  • Cae Llwyd Reservoir
  • Penycae Top Reservoir
  • Ty Mawr Reservoir

See also

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List of dams and reservoirs in the United Kingdom Facts for Kids. Kiddle Encyclopedia.