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LakeQuality

Lake water quality in England

England has 529 named lakes in this catalog, sampled 2016–2026. 524 have total phosphorus, 521 have chlorophyll-a, 1 have Secchi depth. Values are the authority's measurements, not a LakeQuality letter grade.

Lake map

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Places in England

Named lakes

LakePlaceTotal phosphorusChlorophyll-aSecchiYear
Abberton Reservoir From the ShorelineEssex Norfolk and Suffolk76 µg/L13 µg/L2025
Abbey LakeWest Thames30 µg/L4.0 µg/L2024
Abbey Meads LakeKent and South London31 µg/L11 µg/L2025
Alderfen BroadEssex Norfolk and Suffolk96 µg/L5.4 µg/L2026
Alderford LakeShrops Heref Worcs and Glos89 µg/L7.6 µg/L2026
Alkmund Park PoolShrops Heref Worcs and Glos185 µg/L37 µg/L2026
Allerton Ings Pasture PondYorkshire210 µg/L27 µg/L2026
Andys Lake East ShoreWest Thames11 µg/L2.0 µg/L2026
Anglers Reservoir by the PondYorkshire21 µg/L10 µg/L2026
Anglezarke Reservoir Rivington Catchement DipCumbria and Lancashire27 µg/L6.6 µg/L2020
Ardleigh ReservoirEssex Norfolk and Suffolk65 µg/L8.8 µg/L2026
Ashford Station LakeHerts and North London52 µg/L5.4 µg/L2026
Ashworth Moor ReservoirGtr Mancs Mersey and Ches25 µg/L5.6 µg/L2020
Audenshaw ReservoirGtr Mancs Mersey and Ches22 µg/L6.3 µg/L2020
Bainton Syndicate LakeLincs and Northants32 µg/L8.7 µg/L2026
Bakethin ReservoirNorthumberland Durham and Tees22 µg/L1.6 µg/L2020
Balderhead ReservoirNorthumberland Durham and Tees21 µg/L1.8 µg/L2026
Balderton LakeDerbys Notts and Leics29 µg/L3.1 µg/L2025
Bar MereGtr Mancs Mersey and Ches150 µg/L15 µg/L2023
Barnacre North ReservoirCumbria and Lancashire21 µg/L5.6 µg/L2020
Barnby Dun PondYorkshire160 µg/L6.6 µg/L2026
Barrow Reservoir Tower Northern TankWessex197 µg/L11 µg/L2020
Barston LakeStaffs Warks and West Mids435 µg/L49 µg/L2026
Barton BroadEssex Norfolk and Suffolk72 µg/L26 µg/L2026
Bartons Broads Residential Park LakeLincs and Northants655 µg/L4.4 µg/L2026
Bassenthwaite LakeCumbria and Lancashire13 µg/L4.1 µg/L2026
Belmont ReservoirGtr Mancs Mersey and Ches34 µg/L1.9 µg/L2025
Belvide Reservoir Fwf StillwaterStaffs Warks and West Mids259 µg/L12 µg/L2026
Berrington PoolShrops Heref Worcs and Glos92 µg/L13 µg/L2024
Betley MereGtr Mancs Mersey and Ches310 µg/L52 µg/L2026
Betley Mere Adjecent To Mere GutterGtr Mancs Mersey and Ches547 µg/L27 µg/L2019
Betley Mere From JettyGtr Mancs Mersey and Ches300 µg/L42 µg/L2020
Big Billinge LakeGtr Mancs Mersey and Ches175 µg/L7.5 µg/L2025
Big Lodge LakeCumbria and Lancashire61 µg/L8.3 µg/L2026
Big WatersNorthumberland Durham and Tees87 µg/L7.8 µg/L2020
Bilberry ReservoirYorkshire20 µg/L1.0 µg/L2026
Black Dicth PondWest Thames175 µg/L3.5 µg/L2023
Black Lough LakeNorthumberland Durham and Tees93 µg/L46 µg/L2026
Blackstone Edge ReservoirGtr Mancs Mersey and Ches46 µg/L5.3 µg/L2020
Blackton ReservoirNorthumberland Durham and Tees21 µg/L1.3 µg/L2020
Blagdon LakeWessex71 µg/L7.5 µg/L2020
Blashford LakeWessex21 µg/L6.2 µg/L2026
Blea WaterCumbria and Lancashire2.8 µg/L1.0 µg/L2022
Blelham TarnCumbria and Lancashire19 µg/L5.7 µg/L2026
Blickling Hall LakeEssex Norfolk and Suffolk21 µg/L9.2 µg/L2025
Boating LakeHerts and North London196 µg/L64 µg/L2017
Bolam LakeNorthumberland Durham and Tees46 µg/L4.9 µg/L2026
BoldermereWest Thames42 µg/L8.4 µg/L2024
Bomere PoolShrops Heref Worcs and Glos37 µg/L8.7 µg/L2025
Bomere Pool JettyShrops Heref Worcs and Glos33 µg/L9.5 µg/L2026
Bonehill Mill Fishery LakeStaffs Warks and West Mids200 µg/L58 µg/L2026
Boreham Mere FisheryEssex Norfolk and Suffolk59 µg/L47 µg/L2026
Boultham Mere ReserveLincs and Northants265 µg/L9.8 µg/L2026
Bowyers LakeHerts and North London37 µg/L2.7 µg/L2026
Bowyers Water :Waltham CrossHerts and North London38 µg/L5.7 µg/L2022
Bradbourne Lake KwtKent and South London33 µg/L11 µg/L2026
Bradgate Brook LakeDerbys Notts and Leics75 µg/L13 µg/L2026
Bradwell LakeCambs and Bedfordshire66 µg/L5.6 µg/L2026
Brasside PondNorthumberland Durham and Tees98 µg/L8.5 µg/L2024
Braydon PondWessex185 µg/L38 µg/L2026
Broadwater LakeHerts and North London115 µg/L8.9 µg/L2026
Brooklands LakeKent and South London33 µg/L5.3 µg/L2026
Broomey Croft PoolStaffs Warks and West Mids485 µg/L5.9 µg/L2026
Broomlee Lough LakeNorthumberland Durham and Tees16 µg/L4.0 µg/L2026
BrotherswaterCumbria and Lancashire5.3 µg/L1.5 µg/L2026
Burnt Fen BroadEssex Norfolk and Suffolk102 µg/L50 µg/L2020
Burntfen BroadEssex Norfolk and Suffolk130 µg/L45 µg/L2026
Burrows Pit LakeKent and South London100 µg/L40 µg/L2026
Burton Mill PondSolent and South Downs53 µg/L16 µg/L2026
Bussock PondLincs and Northants59 µg/L25 µg/L2025
Butterley ReservoirYorkshire28 µg/L1.4 µg/L2026
ButtermereCumbria and Lancashire4.4 µg/L1.8 µg/L2026
Buttermere As Part of A Wq SurveyCumbria and Lancashire6.5 µg/L3.1 µg/L2026
By Outfall LakeWest Thames31 µg/L24 µg/L2025
By Sluice LakeWest Thames74 µg/L10 µg/L2025
Cant Clough ReservoirCumbria and Lancashire18 µg/L3.3 µg/L2020
Cargill LakeHerts and North London160 µg/L9.5 µg/L2026
Carlton PondsYorkshire280 µg/L12 µg/L2026
Carr Brook (Blackwell Brook LakeDerbys Notts and Leics100 µg/L5.4 µg/L2022
Carr Mill Dam LakeGtr Mancs Mersey and Ches92 µg/L2.4 µg/L2026

Showing 80 of 529 named lakes. Open a county or place page for the rest.

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Official surface phosphorus, chlorophyll-a, and/or Secchi. Not a LakeQuality A–F grade — the authority does not publish a letter on this scale.

Monitoring: the Environment Agency (England).