# 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

### 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
* 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
* 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) - 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

## 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