List of dams and reservoirs in United Kingdom
From Infogalactic: the planetary knowledge core
This is a list of dams and reservoirs in the United Kingdom.
Contents
- 1 England
- 1.1 Buckinghamshire
- 1.2 Cambridgeshire
- 1.3 Cheshire
- 1.4 Cornwall
- 1.5 County Durham
- 1.6 Cumbria
- 1.7 Derbyshire
- 1.8 Devon
- 1.9 East Sussex
- 1.10 Essex
- 1.11 Gloucestershire
- 1.12 Greater Manchester
- 1.13 Hertfordshire
- 1.14 Kent
- 1.15 Lancashire
- 1.16 Leicestershire
- 1.17 Lincolnshire
- 1.18 London
- 1.19 Northamptonshire
- 1.20 Northumberland
- 1.21 North Yorkshire
- 1.22 Oxfordshire
- 1.23 Rutland
- 1.24 Shropshire
- 1.25 Somerset
- 1.26 South Yorkshire
- 1.27 Staffordshire
- 1.28 Surrey
- 1.29 Suffolk
- 1.30 Warwickshire
- 1.31 West Midlands
- 1.32 West Sussex
- 1.33 West Yorkshire
- 1.34 Wiltshire
- 1.35 Worcestershire
- 2 Northern Ireland
- 3 Scotland
- 3.1 City of Aberdeen
- 3.2 Aberdeenshire
- 3.3 Angus
- 3.4 Argyll and Bute
- 3.5 Clackmannanshire
- 3.6 Dumfries and Galloway
- 3.7 City of Dundee
- 3.8 East Ayrshire
- 3.9 East Dunbartonshire
- 3.10 East Lothian
- 3.11 East Renfrewshire
- 3.12 City of Edinburgh
- 3.13 Falkirk
- 3.14 Fife
- 3.15 City of Glasgow
- 3.16 Highland
- 3.17 Inverclyde
- 3.18 Midlothian
- 3.19 Moray
- 3.20 North Ayrshire
- 3.21 North Lanarkshire
- 3.22 Orkney
- 3.23 Perth and Kinross
- 3.24 Renfrewshire
- 3.25 Scottish Borders
- 3.26 Shetland
- 3.27 South Ayrshire
- 3.28 South Lanarkshire
- 3.29 Stirling
- 3.30 West Dunbartonshire
- 3.31 West Lothian
- 3.32 Western Isles
- 4 Wales
- 5 See also
England
Buckinghamshire
- Foxcote Reservoir, north of Buckingham
- Weston Turville Reservoir, between Weston Turville and Wendover
Cambridgeshire
Cheshire
- Bollinhurst Reservoir
- Bosley Reservoir, Bosley
- Horse Coppice Reservoir
- Lamaload Reservoir, east of Macclesfield
- 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
- Carsington Water
- Combs Reservoir
- Errwood Reservoir
- Fernilee Reservoir
- Foremark Reservoir
- Hurst Reservoir
- Mossy Lea Reservoir
- Ogston Reservoir
- Staunton Harold Reservoir
- Upper Derwent Valley
- Longdendale Chain of reservoirs
- Arnfield Reservoir
- Hollingworth Reservoir now drained and a nature reserve
- Bottoms Reservoir
- Valehouse Reservoir
- Rhodeswood Reservoir
- Torside Reservoir
- Woodhead Reservoir
- Swineshaw Reservoir (Derbyshire)
- Upper Swineshaw Reservoir (Derbyshire)
- Toddbrook Reservoir
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
Greater Manchester
- Bolton:
- Manchester:
- Oldham:
- Ashworth Moor Reservoir
- Besom Hill Reservoir
- Black Moss Reservoir
- 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:
- Wigan:
Hertfordshire
Kent
Lancashire
- Anglezarke Reservoir
- Belmont Reservoir
- Black Moss Reservoirs
- Calf Hey Reservoir
- Cowm Reservoir
- Delph Reservoir
- Dingle Reservoir
- Holden Wood Reservoir
- Jumbles Reservoir
- Lower Rivington Reservoir
- Lower Roddlesworth Reservoir
- Lower Ogden Reservoir
- Rake Brook Reservoir
- Spring Mill Reservoir
- Springs Reservoir
- Turton and Entwistle Reservoir
- Upper Rivington Reservoir
- Upper Roddlesworth Reservoir
- 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
London
- Brent Reservoir (also known as the Welsh Harp)
- Island Barn Reservoir
- King George VI Reservoir
- Queen Elizabeth II Reservoir
- Queen Mary Reservoir
- Queen Mother Reservoir
- Staines Reservoirs
- Stoke Newington West Reservoir
- Wraysbury 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
- Boddington Reservoir, a canal supply reservoir between Byfield and Upper Boddington
- Cransley Reservoir (Kettering)
- Daventry Reservoir in Daventry Country Park
- Drayton Reservoir (Daventry)
- Hollowell reservoir
- Naseby Reservoir
- Pitsford Water
- Ravensthorpe Reservoir
- Stanford Reservoir, between Stanford-on-Avon and South Kilworth
- Sulby and Welford Reservoirs
- Sywell Reservoir
- Thorpe Malsor Reservoir (Kettering)
Northumberland
- Bakethin Reservoir
- Catcleugh Reservoir
- Colt Crag Reservoir
- Fontburn
- Hallington Reservoirs
- Little Swinburne Reservoir
- Kielder Water
- Whittle Dene
North Yorkshire
- Angram Reservoir
- Upper and Lower Bardon Reservoirs
- 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
- Lumley Moor Reservoir
- March Ghyll Reservoir
- Mossy Moor Reservoir
- Oulston Reservoir
- Roundhill Reservoir
- Scaling Reservoir
- Scar House Reservoir
- Scargill Reservoir
- Swinsty Reservoir
- Ten Acre Reservoir
- Thornton Steward Reservoir
- Thruscross Reservoir
- Winterburn Reservoir
Oxfordshire
Rutland
Shropshire
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
- Sutton Bingham Reservoir
- Wimbleball Lake
South Yorkshire
- Agden Reservoir
- Broadstone Reservoir
- Broomhead Reservoir
- Dale Dyke Reservoir
- Damflask Reservoir
- Elsecar Reservoir
- Howden Reservoir
- 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
- Underbank Reservoir
- Weecher Reservoir
- Wharncliffe Reservoir
- Windleden Reservoirs
- Winscar Reservoir
- Worsbrough Reservoir
Staffordshire
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- 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
- Stain Hill Reservoirs
- Staines Reservoirs
- Sunnyside Reservoir
- Wraysbury Reservoir
Suffolk
Warwickshire
- Draycote Water
- Oldbury Reservoir
- Packington Lakes - support for the Grand Union Canal
- Shustoke Reservoirs
- 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
- Baitings Reservoir
- Bilberry Reservoir
- Blackmoorfoot Reservoir
- Black Moss Reservoir
- Blakeley Reservoir
- Booth Dean Upper Reservoir
- Booth Dean Lower Reservoir
- Boothwood 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
- Embsay 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
Co. 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
Dumfries and Galloway
City of Dundee
East Ayrshire
East Dunbartonshire
East Lothian
East Renfrewshire
- Balgray Reservoir
- Littleton Resrvoir
- Ryat Linn Reservoir
- Waulkmill Glen Reservoir
- Walton Dam
- Glanderston Dam
- Snypes Dam
- Kirkton Dam
City of Edinburgh
Falkirk
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
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 Katrine
- Loch Glascarnoch
Inverclyde
Midlothian
Moray
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
Perth and Kinross
- Dunalastair Water
- Loch Tummel - part of the Tummel Valley hydroelectric scheme
- Lower Glendevon Reservoir
- Upper Glendevon Reservoir
Renfrewshire
Scottish Borders
- Alemoor Loch
- Baddinsgill Reservoir
- Fruid Reservoir
- Megget Reservoir
- Talla Reservoir
- Westwater Reservoir
Shetland
South Ayrshire
- Bradan Service Reservoir
- Collenan
- Glendrissaigh
- Loch Bradan
- Loch Riecawr
- Loch Spallander
- Loch Spouts
- Penwhapple
- Raith
South Lanarkshire
Stirling
West Dunbartonshire
West Lothian
Western Isles
- Loch Mor an Stairr - Isle of Lewis
- Roghadal Reservoir - Isle of Harris
Wales
Anglesey (Ynys Mon)
- Llyn Alaw - Water supply to much of north Anglesey
- Llyn Cefni - Water supply to central Anglesey
Cardiff
- Llanishen Reservoir - Water supply to Cardiff
- Lisvane Reservoir - Water Supply to Cardiff
Carmarthenshire
Ceredigion
Conwy
- Llyn Bodgynydd - supply for the Pandora lead mine (disused)
- Llyn Brenig - part of Dee Regulation system - also in Denbighshire
- Llyn Coedty - provides power for an aluminium smelter
- Llyn Conwy - water supply for Llanrwst and Betws-y-Coed
- Llyn Cowlyd - water supply for Conwy and Colwyn Bay
- 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)
Denbighshire
- Aled Isaf Reservoir
- Alwen Reservoir
- Cae Llwyd Reservoir
- Llyn Aled
- Llyn Alwen
- Llyn Brenig - part of the River Dee regulation system
- Llyn Celyn - part of the River Dee regulation system. Its construction caused local outrage with the flooding of a Welsh village to enable water to be supplied to England
- Pendinas Reservoir
- Llyn Tegid (Bala Lake)
- Nant-y-Ffrith Reservoir
- Ty Mawr 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. Also supports the rare Arctic char
- 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 Corus Group steel-works at Port Talbot
Pembrokeshire
- Bosherston lakes - amenity reservoir
- 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
- Elan Valley Reservoirs - a group of reservoirs supplying Birmingham and parts of the West Midlands conurbation with drinking water
- Llyn Efyrnwy (Lake Vyrnwy) - supplies water to the Liverpool area
- Talybont Reservoir
- Ystradfellte Reservoir
- Llyn Clywedog
Swansea
Torfaen
See also
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| North America | ||
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