PlaceDossier / BC places / Lakes

BC lakes, reading by reading

931 lakes (797 named) with clarity or nutrient readings in the province's monitoring records, from 1966 to September 19, 2026. Each lake's page shows its readings year by year against BC's other sampled lakes.

103 Mile Lake108 Mile Lake130 Mile LakeAbruzzi LakeAconitum LakeAeroplane LakeAid LakeAiken LakeAlastair LakeAlice LakeAllan LakeAlouette LakeAlpha LakeAmanita LakeAmbrose LakeAnahim LakeAndy Bailey LakeAngly LakeAngora LakeAntoine LakeAnutz LakeAnzac LakeAtlin LakeAtluck LakeAtna LakeAugier LakeAylmer LakeAzouzetta LakeBaile LakeBaird LakeBalfour LakeBarnes LakeBarney LakeBatchellor LakeBattleship LakeBeadnell Lake: Secchi 11.1 m (2024–2025)Bear LakeBeatrice LakeBeaver Lake (Brooks Peninsula watershed)Beaver Lake (Cowichan watershed): Secchi 2.0 m (2007)Beaver Lake (Lower Chilcotin River watershed)Beaver Lake (Quesnel River watershed)Beaver Lake (Slocan River watershed)Beavertail LakeBeck Lake: Secchi 1.8 m (1992)Bednesti LakeBenson LakeBig Bar Lake: Secchi 6.4 m (2012–2017)Big Lake (Bridge Creek watershed)Big Lake (Quesnel River watershed)Bigelow LakeBilly LakeBirch Lake: Secchi 4.4 m (2012–2017)Birches LakeBirkenhead LakeBittern LakeBlack Lake (Alberni Inlet watershed)Black Lake (Lower North Thompson River watershed)Black Lake (Quesnel River watershed)Black Lake (Toba Inlet watershed)Blackhawk LakeBlackwater LakeBlaney LakeBleeker LakeBlenkinsop LakeBlinkhorn LakeBlue Earth LakeBlue Lake (Alberni Inlet watershed)Blue Lake (Narcosli Creek watershed)Blue Lake (Similkameen River watershed)Blue Sheep LakeBoar LakeBob Quinn LakeBog LakeBolduc LakeBonaparte Lake: Secchi 7.0 m (2016)Boneyard LakeBonney LakeBoomerang Lake (Babine Lake watershed)Boomerang Lake (Cheslatta River watershed)Boomerang Lake (Middle Stikine River watershed)Boot Lake (Campbell River watershed)Boot Lake (Kiskatinaw River watershed)Bootjack Lake: Secchi 5.3 m (2014)Border LakeBose LakeBouchie LakeBoundary LakeBowser LakeBrown LakeBrown Paint LakeBuchanan LakeBuckley LakeBulkley LakeBullocks Lake: Secchi 1.6 m (1978–1979)Bungalow LakeBurden LakeBurnaby LakeBurnell LakeButchart Lake: Secchi 8.0 m (2009)Butte LakeCadorna LakeCahill LakeCalling LakeCameron LakesCamp Island LakeCamp LakeCampbell Lake (South Thompson River watershed)Canim LakeCanoe LakeCapilano LakeCartwright LakeCasey LakeCassel LakeCat LakeCataract LakeCathers LakeCaverhill Lake: Secchi 7.6 m (2009–2010)Cecil LakeCecilia LakeCedar LakeCerulean LakeChambers LakeChapperon LakeCharlotte LakeCheewhat LakeChemainus LakeChief LakeChisholm LakeChismaina LakeChutanli LakeChuwhels LakeCircle LakeCirclet LakeClaud Elliott LakeClayoquot LakeClearwater LakesClements LakeCochin LakeComfort LakeComo Lake (Atlin Lake watershed)Como Lake (Lower Fraser watershed): Secchi 1.2 m (2015)Connor LakesCook LakeCoquitlam LakeCouncil Lake: Secchi 8.6 m (2009)Cow LakeCranby LakeCrawfish LakeCrescent LakeCrest LakeCross LakeCroteau LakeCry LakeCrystal LakeCuisson LakeDahl LakeDaisy LakeDamsumlo LakeDarkis LakeDarlington LakeDavie LakeDavis LakeDeadman LakeDeadwood LakeDease LakeDecker LakeDeer Lake: Secchi 2.5 m (2015–2016)Deka LakeDerickson LakeDeserted LakeDimple LakeDisella LakeDoe LakeDominic LakeDonner LakeDouglas Lake (Comox watershed)Douglas Lake (Nicola River watershed)Douse LakeDraw LakeDrewry LakeDrum LakesDuck LakeDunn LakeDunsapie LakeDurand LakeDurrance Lake: Secchi 5.8 m (2003)Eagle (Murphy) LakeEagles LakeEaglet LakeEalue LakeEast Barrière LakeEast Hautête LakeEaster LakeEcho Lake (Campbell River watershed)Echo Lake (Iskut River watershed)Echo Lake (Stuart River watershed)Ed Asp LakeEdith LakeEdwin LakesEena LakeEleanor LakeElizabeth LakeEllen LakeEllerslie LakeEllis LakeEmily LakeEnos LakeEohippus LakeEsary LakeEuchu ReachEulatazella LakeEwart LakeFace LakeFarewell LakeFawn LakeFelker LakeFifteen Mile LakeFinlayson LakesFish Lake (Stuart River watershed)Fish Lake (Taseko River watershed)Fletcher LakeFlora LakeFlume LakeFoley LakeForest Lake (Adams River watershed)Forest Lake (Twan Creek watershed)Fork Lake: Secchi 3.4 m (2003)Fortress LakeFour LakesFox LakeFrances LakeFrancis Lake (Harrison River watershed)Francis Lake (San Juan River watershed)Frank LakeFrederick LakeFrisken LakeFuller Lake: Secchi 6.0 m (2004)Garrett LakeGavin LakeGeorgie LakeGermansen LakeGlimpse LakeGoldstream LakeGoose LakeGooseneck LakeGoosly LakeGosling LakeGrace LakeGracie Lake: Secchi 14.5 m (2009)Grafton LakeGraham LakeGrave LakeGray LakeGreasetrail LakeGreat Central Lake: Secchi 7.0 m (2009)Green Lake (Green Lake watershed): Secchi 7.9 m (2010–2017)Green Lake (Horsefly River watershed)Green Lake (Okanagan River watershed)Griffin LakeGrizzly Lake (Kootenay River watershed)Grizzly Lake (Willow River watershed)Gruidae LakeGun Lake (Nahlin River watershed)Gunflint LakeGwillim LakeHadley LakeHague LakeHahas LakeHallett LakeHart LakeHartley LakeHathaway LakeHatzic LakeHayward Lake (Lower Fraser watershed)Hayward Lake (Lower Skeena River watershed)Heffley Lake: Secchi 10.7 m (2016)Help LakeHenning LakeHesquiat LakeHiggins LakeHigh Tuya LakeHill-Tout LakeHluey LakesHolland LakesHorn LakeHottah LakeHoy LakeHudson LakeHuff LakeHumpback Reservoir: Secchi 6.2 m (1984–1985)Huson LakeHyland LakeIkt LakeIllusion LakesIntata ReachIron LakeIronmask LakeJack of Clubs LakeJackfish LakeJacko LakeJackson LakeJacobs LakeJade LakeJakes LakeJennings LakesJigsaw LakeJim Mitchell LakeJim Smith LakeJoan LakeJoe LakeJohanson LakeJohn Frank LakeJohnson Lake (Nechako River watershed)Johnson Lake (St. Mary River watershed)Johnston Lake (Comox watershed)Johnston Lake (Lower Skeena River watershed)Jump LakeKaipit LakeKamloops Lake: Secchi 6.8 m (2015–2016)Kanim LakeKathleen Lake (Brooks Peninsula watershed)Kathleen Lake (Okanagan River watershed)Kawkawa LakeKeary LakeKeogh LakeKeta LakeKhtada LakeKidney LakeKidprice LakeKilpoola LakeKirby LakeKlinkit LakeKlua LakesKluachesi LakeKluea LakeKnewstubb LakeKnight LakeKostal LakeKunlin Lake: Secchi 9.4 m (2009)Kwai LakeKwinageese LakeKwinamuck LakeLac des RochesLachmach LakeLady LakeLadyslipper Lake: Secchi 8.5 m (2019)Laidman LakeLajoie Lake: Secchi 6.0 m (2009–2016)Lake BeautifulLake GeorgeLake Helen MackenzieLake MagogLang LakeLarix LakeLatimer LakeLaurie LakeLawson LakeLeask LakeLeg LakeLeighton LakeLeverson LakeLhuy Nachasgwen GunlinLifeline LakeLing LakeLittle Bobtail LakeLittle Dease LakeLittle Mosquito LakeLittle Quarry LakeLittle Toquaht LakeLittle Trapper LakeLittle White LakeLogan Lake: Secchi 3.7 m (2009–2016)Loon Lake: Secchi 6.0 m (2016)Looncry LakeLost LakeLower Arrow LakeLower Elk LakeLower Gnat LakeLower Stella LakeLubbe LakeLund LakeLynx LakeMackill LakeMadden LakeMahoney LakeMahood LakeMaid LakeMakii LakeMalaspina LakeMaltby LakeMamit LakeMarie LakeMarion Lake (Upper Sikanni Chief River watershed)Marion Lake (Work Channel watershed)Marquart LakeMartha LakeMatheson LakeMaxan Lake: Secchi 2.8 m (1975)Maynard LakeMcCauley LakeMcCoy LakeMcCreight LakeMcCulloch ReservoirMcDougall LakeMcGlashan LakeMcIntosh LakesMcKay LakeMcKenzie LakeMcKnab LakeMcLeese LakeMcLeod LakeMcQuarrie LakeMeek LakeMegin LakeMehan LakeMelissa LakeMenzies LakeMerrill LakeMesachie LakeMess LakeMichael Lake: Secchi 0.8 m (2008)Mike LakeMilburn LakeMirror LakeMisty LakeMitchell Lake: Secchi 3.8 m (2003)Moat LakeMohun LakeMokst LakeMonroe LakeMons LakeMonsoon LakeMonte Lake: Secchi 7.0 m (2016–2018)Moose Lake (Kootenay River watershed)Moose Lake (Lower North Thompson River watershed)Moose Lake (Murray River watershed)Moose Lake (Upper Eutsuk Lake watershed)Mooto LakeMorrison LakeMorton Lake: Secchi 4.3 m (2009)Mosquito Lake (Lillooet watershed)Mosquito Lake (Morsby Island watershed)Mosquito Lake (Upper Arrow Lake watershed)Mud LakeMunro Lake (Nass River watershed)Munro Lake (Nation River watershed)Muriel Lake: Secchi 4.0 m (2009)Murtle LakeMuskeg LakeNanaimo LakesNancy Greene LakeNanika LakeNass LakeNeedle LakeNeedmore LakeNellian LakeNess Lake: Secchi 3.8 m (2010)Netuts LakeNew LakeNewcombe LakeNickel Plate Lake: Secchi 5.7 m (2024–2025)Nimpo LakeNina LakeNine LakeNiska LakesNiskonlith LakeNita LakeNome LakeNorbury LakesNorman LakeNorth Barrière LakeNorth LakeNorth Star LakeNukko Lake: Secchi 3.2 m (1977)O'Connor Lake: Secchi 3.3 m (1991)Obo LakeOgLakeOliver LakeOne Island Lake: Secchi 4.1 m (2016)Onion LakeOona LakeOotsa LakeOshinow Lake: Secchi 8.5 m (2009)Otter Lake (Bridge Creek watershed)Otter Lake (Similkameen River watershed): Secchi 8.6 m (1992–1994)Pachena LakePalmer Meadows LakePam LakePanther LakePat LakePaul Lake (Graham Island watershed)Paul Lake (Lower North Thompson River watershed): Secchi 7.0 m (2016)Pavilion LakePaw LakePaxton LakePearse LakePease LakePerry LakePeter LakePeters LakePhillips LakePhinetta Lake: Secchi 2.2 m (2012)Pinantan LakePitoney LakePlate LakePoison LakesPolygon PondPrairie LakePressy LakePretty Girl LakePriest LakeProspect Lake: Secchi 4.7 m (2003)Punchaw LakePuntataenkut LakePuntchesakut Lake: Secchi 2.9 m (2023–2025)Purden LakeQuatse Lake: Secchi 2.2 m (2015–2016)Quinsam Lake: Secchi 7.0 m (1984–1985)Raven LakeRay LakeRed LakeRegan LakeReginald LakeRevelstoke LakeRheinhart LakeRichard LakeRiley LakeRipley LakeRobb LakeRobert LakeRoberts LakeRock Isle LakeRoe LakeRolley LakeRose LakeRound Lake (Bulkley River watershed)Round Lake (Parksville watershed)Ruth LakeRutherford LakeRykerts LakeSabiston LakeSagar LakeSakinaw Lake: Secchi 8.5 m (1980)Sandell LakeSara LakeSasamat Lake: Secchi 8.1 m (2015–2016)Saskum LakeSaxton LakeSchkam LakeSchoen Lake: Secchi 6.5 m (2009)Scrub LakeScuitto LakeSecond LakeSecord LakeSeeley LakeSepa LakeSeymour Lake (Bulkley River watershed)Seymour Lake (Squamish watershed)Shea LakeSheila LakeSheridan LakeSherk LakeShumway LakeShushartie LakeSilver LakeSix Mile LakesSixteen Mile LakeSkidegate LakeSkmana LakeSkunk LakeSmokee LakeSnakehead LakeSoap LakeSomenos LakeSouth Barrière LakeSpanish LakeSpectacle Lake (Jervis Inlet watershed)Spectacle Lake (Victoria watershed)Spectrum LakeSpider LakeSprise LakeSquirrel LakeSt. Mary Lake (St. Mary River watershed): Secchi 3.4 m (2017)Stack LakesStanley LakeStar LakeStave LakeStepp LakeStump Lake (Kettle River watershed)Stump Lake (Lower Nicola River watershed): Secchi 4.0 m (2016–2018)Stump Lake (Squamish watershed)Sua LakeSulphurous LakeSummit Lake (Elk River watershed)Summit Lake (Middle Muskwa River watershed): Secchi 6.1 m (2024–2025)Summit Lake (Slocan River watershed): Secchi 4.4 m (2015)Sunburst LakeSunrise LakeSustut LakeSuzanne LakeSwalwell LakeSwift LakeTachilta LakesTahtsa ReachTarget LakeTaseko LakesTatla LakeTatsamenie LakeTatsatua LakeTchesinkut LakeTeanook Lake: Secchi 5.1 m (2003)Ten Mile LakeThetis Lake: Secchi 4.0 m (2005)Third LakeThompson LakeThree Isle LakeThree Valley LakeTigulhdzinTill LakeTimothy LakeToboggan LakeTodagin LakeTom LakeToodoggone LakeTootsee LakeToquaht LakeTrout Lake: Secchi 12.2 m (2015–2017)Tsalitpn LakeTsiko LakeTucho LakeTuck LakeTumeka LakeTurtle LakeTutshi LakeTuya LakeTyee LakeUchuck LakeUnnamed lake in the Adams River watershedUnnamed lake in the Adams River watershedUnnamed lake in the Babine Lake watershedUnnamed lake in the Babine Lake watershedUnnamed lake in the Babine River watershedUnnamed lake in the Babine River watershedUnnamed lake in the Babine River watershedUnnamed lake in the Babine River watershedUnnamed lake in the Babine River watershedUnnamed lake in the Blackwater River watershedUnnamed lake in the Blue River watershedUnnamed lake in the Bonaparte River watershedUnnamed lake in the Bridge Creek watershedUnnamed lake in the Brooks Peninsula watershedUnnamed lake in the Brooks Peninsula watershedUnnamed lake in the Bulkley River watershedUnnamed lake in the Bull River watershedUnnamed lake in the Campbell River watershedUnnamed lake in the Campbell River watershed: Secchi 5.8 m (1993)Unnamed lake in the Campbell River watershedUnnamed lake in the Chilako River watershedUnnamed lake in the Chilako River watershedUnnamed lake in the Chilliwack River watershedUnnamed lake in the Columbia River watershedUnnamed lake in the Columbia River watershedUnnamed lake in the Comox watershedUnnamed lake in the Cottonwood River watershedUnnamed lake in the Cottonwood River watershedUnnamed lake in the Cottonwood River watershedUnnamed lake in the Dog Creek watershedUnnamed lake in the Dog Creek watershedUnnamed lake in the Dog Creek watershedUnnamed lake in the Elk River watershedUnnamed lake in the Elk River watershedUnnamed lake in the Elk River watershedUnnamed lake in the Elk River watershedUnnamed lake in the Elk River watershedUnnamed lake in the Elk River watershedUnnamed lake in the Elk River watershedUnnamed lake in the Green Lake watershedUnnamed lake in the Guichon Creek watershedUnnamed lake in the Holberg watershedUnnamed lake in the Jennings River watershedUnnamed lake in the Jennings River watershedUnnamed lake in the Jennings River watershedUnnamed lake in the Kispiox River watershedUnnamed lake in the Kispiox River watershedUnnamed lake in the Kispiox River watershedUnnamed lake in the Knight Inlet watershedUnnamed lake in the Kootenay River watershedUnnamed lake in the Kshwan River watershedUnnamed lake in the Kshwan River watershedUnnamed lake in the Kshwan River watershedUnnamed lake in the Kshwan River watershedUnnamed lake in the Little Rancheria River watershedUnnamed lake in the Lower Chilako River watershedUnnamed lake in the Lower Chilako River watershedUnnamed lake in the Lower Chilako River watershedUnnamed lake in the Lower Fraser watershedUnnamed lake in the Lower Nicola River watershedUnnamed lake in the Lower North Thompson River watershed: Secchi 2.9 m (2012)Unnamed lake in the Lower North Thompson River watershedUnnamed lake in the Lower North Thompson River watershedUnnamed lake in the Lower North Thompson River watershedUnnamed lake in the Lower Omineca River watershedUnnamed lake in the Lower Salmon River watershedUnnamed lake in the Mahood Lake watershedUnnamed lake in the Mahood Lake watershedUnnamed lake in the Mahood Lake watershedUnnamed lake in the Mahood Lake watershedUnnamed lake in the Mahood Lake watershedUnnamed lake in the Middle Banks Island watershedUnnamed lake in the Morice River watershedUnnamed lake in the Morice River watershedUnnamed lake in the Nascall River watershedUnnamed lake in the Nass River watershedUnnamed lake in the Nass River watershedUnnamed lake in the Nass River watershedUnnamed lake in the Nation River watershedUnnamed lake in the Nation River watershedUnnamed lake in the Nation River watershedUnnamed lake in the Nazko River watershedUnnamed lake in the Nechako River watershedUnnamed lake in the Nechako River watershedUnnamed lake in the Nimpkish River watershedUnnamed lake in the Nimpkish River watershedUnnamed lake in the Okanagan River watershedUnnamed lake in the Okanagan River watershedUnnamed lake in the Okanagan River watershed: Secchi 6.0 m (1983)Unnamed lake in the Okanagan River watershedUnnamed lake in the Okanagan River watershedUnnamed lake in the Okanagan River watershedUnnamed lake in the Quesnel River watershedUnnamed lake in the Quesnel River watershedUnnamed lake in the Quesnel River watershedUnnamed lake in the Revelstoke Lake watershedUnnamed lake in the San Jose River watershedUnnamed lake in the San Jose River watershedUnnamed lake in the San Juan River watershedUnnamed lake in the Seton Lake watershedUnnamed lake in the Seton Lake watershedUnnamed lake in the Seton Lake watershedUnnamed lake in the Shuswap Lake watershedUnnamed lake in the Similkameen River watershedUnnamed lake in the South Thompson River watershedUnnamed lake in the South Thompson River watershedUnnamed lake in the South Thompson River watershedUnnamed lake in the South Thompson River watershedUnnamed lake in the South Thompson River watershedUnnamed lake in the Squamish watershedUnnamed lake in the Squamish watershedUnnamed lake in the St. Mary River watershedUnnamed lake in the St. Mary River watershedUnnamed lake in the Stuart River watershedUnnamed lake in the Swift River watershedUnnamed lake in the Tahsis watershedUnnamed lake in the Takla Lake watershedUnnamed lake in the Takla Lake watershedUnnamed lake in the Teslin River watershedUnnamed lake in the Teslin River watershedUnnamed lake in the Thompson River watershedUnnamed lake in the Thompson River watershedUnnamed lake in the Thompson River watershedUnnamed lake in the Thompson River watershedUnnamed lake in the Toba Inlet watershedUnnamed lake in the Toba Inlet watershedUnnamed lake in the Toba Inlet watershedUnnamed lake in the Toba Inlet watershedUnnamed lake in the Twan Creek watershedUnnamed lake in the Upper Jennings River watershedUnnamed lake in the Upper Peace River watershedUnnamed lake in the Victoria watershedUnnamed lake in the Willow River watershedUpana LakeUpper Arrow LakeUpper Elk LakeUpper South Barrière LakeUpper Summit LakeUpper Thelwood LakeUslika LakeValentine LakeValerie LakeVenables LakeVerdant LakeVictoria Lake (Brooks Peninsula watershed)Victoria Lake (Nahlin River watershed)Vivian LakeWahleach LakeWarner LakeWasa Lake: Secchi 5.8 m (2003–2004)Wasi LakeWatch LakeWatson LakeWedgwood LakeWee Sandy LakeWestern LakeWestwood Lake: Secchi 6.0 m (1985–1986)Whitesail LakeWhitetail LakeWhitewood LakeWhitley LakeWilbur LakeWillard LakeWilliamson LakeWilliston LakeWolfe LakeWonder LakeWood Lake (Harrison River watershed)Yehiniko LakeYellen LakeZeballos LakeAdams Lake: Secchi 9.9 m (2016–2025)Allison Lake: Secchi 7.6 m (1984–1993)Alta Lake: Secchi 6.4 m (2016–2025)Babine Lake: Secchi 5.3 m (2017–2026)Bainbridge Lake: Secchi 6.5 m (2016–2025)Beaver Lake (Victoria watershed): Secchi 3.0 m (1993–1995)Bendziny: Secchi 4.0 m (2016–2025)Berman Lake: Secchi 4.7 m (1978)Bowron Lake: Secchi 6.0 m (2016–2025)Brannen Lake: Secchi 5.5 m (2016–2025)Bridge Lake: Secchi 5.9 m (2025)Brohm Lake: Secchi 7.0 m (2015–2024)Burns Lake: Secchi 2.1 m (2017–2026)Buttle Lake: Secchi 7.5 m (1993–2002)Callaghan Lake: Secchi 12.9 m (2023–2025)Campbell Lake (Campbell River watershed): Secchi 10 m (2004–2010)Cathedral Lakes: Secchi 4.3 m (2019–2023)Chain Lake: Secchi 2.7 m (2022–2024)Charlie Lake: Secchi 1.9 m (2017–2026)Chilliwack Lake: Secchi 13 m (2015–2024)Chimney Lake: Secchi 2.9 m (2017–2025)Christina Lake: Secchi 11.6 m (2016–2025)Cluculz Lake: Secchi 4.0 m (2017–2025)Columbia Lake: Secchi 4.3 m (2016–2025)Comox Lake: Secchi 10 m (2006–2015)Cowichan Lake: Secchi 11.5 m (2016–2025)Cultus Lake: Secchi 8.7 m (2018–2024)Cusheon Lake: Secchi 3.8 m (2003–2011)Diana Lake: Secchi 2.2 m (2016–2025)Diver Lake: Secchi 2.8 m (2022–2023)Dragon Lake: Secchi 5.0 m (2016–2025)Dutch Lake: Secchi 8.3 m (2009–2017)Elk Lake: Secchi 4.8 m (2016–2025)Ellison Lake: Secchi 0.7 m (2016–2025)Florence Lake: Secchi 2.5 m (2007–2008)François Lake: Secchi 6.4 m (2016–2025)Fraser Lake: Secchi 3.3 m (2017–2025)Gardom Lake: Secchi 6.6 m (2009–2017)Glen Lake: Secchi 3.8 m (2008–2009)Green Lake (Parksville watershed): Secchi 4.3 m (2008–2014)Gun Lake (Seton Lake watershed): Secchi 18.1 m (2024–2025)Horse Lake: Secchi 5.1 m (2016–2025)Hotel Lake: Secchi 6.0 m (2025)Jewel Lake: Secchi 8.6 m (1999–2007)John Hart Lake: Secchi 9.5 m (2003–2010)Kalamalka Lake: Secchi 4.9 m (2016–2025)Kathlyn Lake: Secchi 3.5 m (2016–2025)Kemp Lake: Secchi 4.0 m (2007–2016)Kinbasket Lake: Secchi 8.0 m (1974–1979)Kootenay Lake: Secchi 6.1 m (1975–1984)Lac la Hache: Secchi 4.0 m (1978–1982)Lac Le Jeune: Secchi 5.8 m (2012–2016)Lake Errock: Secchi 3.1 m (2023–2025)Lake Koocanusa: Secchi 2.0 m (2017–2026)Lake Maxwell: Secchi 4.5 m (2003–2011)Lake Stowell: Secchi 3.6 m (1978–1979)Lake Weston: Secchi 3.8 m (2003–2011)Lakelse Lake: Secchi 5.0 m (2016–2025)Langford Lake: Secchi 5.4 m (2016–2025)Larry Lake: Secchi 5.5 m (1992–1993)Lillian Lake: Secchi 5.3 m (2024–2025)Link Lake: Secchi 3.3 m (1987–1992)Little Shuswap Lake: Secchi 7.0 m (2011–2014)Lizard Lake: Secchi 8.7 m (2017–2025)Long Lake: Secchi 3.7 m (2022–2023)Mabel Lake: Secchi 10.8 m (2016–2025)Mara Lake: Secchi 10.4 m (2016–2025)Middle Quinsam Lake: Secchi 9.0 m (1985–1993)Missezula Lake: Secchi 5.4 m (1987–1993)Moberly Lake: Secchi 1.8 m (2017–2026)Morice Lake: Secchi 9.0 m (2015–2021)Moyie Lake: Secchi 6.4 m (2016–2025)Muncho Lake: Secchi 9.6 m (2024–2026)Murch Lake: Secchi 5.8 m (1978)Nadsilnich Lake: Secchi 1.5 m (2017–2025)Naltesby Lake: Secchi 2.6 m (2018–2026)Nicola Lake: Secchi 2.9 m (2016–2025)Nulki Lake: Secchi 1.2 m (2022–2023)Okanagan Lake: Secchi 5.5 m (2016–2025)Old Wolf Lake: Secchi 5.6 m (1985–1994)Osoyoos Lake: Secchi 4.1 m (2016–2025)Osprey Lake: Secchi 4.2 m (1987–1993)Paska Lake: Secchi 3.0 m (2014–2016)Peachland Lake: Secchi 6.8 m (1987–1995)Pennask Lake: Secchi 2.6 m (2017–2026)Peter Hope Lake: Secchi 6.3 m (2016–2018)Polley Lake: Secchi 3.3 m (2014)Premier Lake: Secchi 10 m (2016–2025)Quamichan Lake: Secchi 1.0 m (2016–2025)Quennell Lake: Secchi 1.2 m (2023–2024)Quesnel Lake: Secchi 5.5 m (2014)Roche Lake: Secchi 3.7 m (2015–2018)Shawnigan Lake: Secchi 5.3 m (2013–2018)Shuswap Lake: Secchi 4.8 m (2016–2025)Skaha Lake: Secchi 6.2 m (2016–2025)Slocan Lake: Secchi 15.6 m (2016–2025)Sooke Lake: Secchi 7.8 m (1984–1985)Spa Lake: Secchi 3.9 m (2022–2026)Sproat Lake: Secchi 13.5 m (2006–2009)St. Mary Lake (Victoria watershed): Secchi 2.1 m (2003–2011)Stocking Lake: Secchi 6.1 m (1985–1994)Strohn Lake: Secchi 0.4 m (2024–2026)Stuart Lake: Secchi 4.9 m (2016–2025)Sugar Lake: Secchi 9.3 m (2016–2025)Sugsaw Lake: Secchi 4.0 m (2007–2009)Summit Lake (Crooked River watershed): Secchi 2.5 m (2022–2024)Swan Lake (Lower Peace River watershed): Secchi 1.3 m (2016–2025)Swan Lake (Victoria watershed): Secchi 1.0 m (2025)Tabor Lake: Secchi 2.2 m (2017–2025)Tachick Lake: Secchi 1.5 m (2024–2025)Tunkwa Lake: Secchi 3.1 m (2018–2019)Twin Lakes: Secchi 3.7 m (2001–2009)Tyhee Lake: Secchi 6.0 m (2016–2025)Unnamed lake in the Guichon Creek watershed: Secchi 5.1 m (2014–2015)Upper Campbell Lake: Secchi 11 m (1986–1995)Upper Quinsam Lake: Secchi 10.3 m (1981)Vaseux Lake: Secchi 4.8 m (2021–2025)White Lake: Secchi 10.5 m (2015–2023)Whiteswan Lake: Secchi 11.3 m (2016–2025)Williams Lake: Secchi 1.2 m (2017–2025)Windermere Lake: Secchi 4.4 m (2016–2025)Wood Lake (Okanagan River watershed): Secchi 2.8 m (2016–2025)

Colour: median summer Secchi depthSmall hollow dots: no clarity comparison

0.4 m18.1 m

Five equal groups of the 122 lakes with at least 5 Secchi readings in their latest 10 sampled years. Darker is clearer.

Top of each ranking

Clearest lakes

  1. Gun Lake (Seton Lake watershed)18.1 m
  2. Slocan Lake15.6 m
  3. Chilliwack Lake13 m
  4. Christina Lake11.6 m
  5. Cowichan Lake11.5 m
  6. Whiteswan Lake11.3 m
  7. Upper Campbell Lake11 m
  8. Mabel Lake10.8 m

Most-sampled lakes

  1. Lake Koocanusa7,282
  2. Kootenay Lake4,048
  3. Okanagan Lake3,252
  4. Shuswap Lake2,390
  5. Upper Arrow Lake1,681
  6. Osoyoos Lake1,549
  7. Lower Arrow Lake1,351
  8. Kalamalka Lake1,179

Every sampled lake

#

A

B

C

D

E

F

G

H

I

J

K

L

M

N

O

P

Q

R

S

T

U

V

W

Y

Z

Algae bloom reports and invasive mussel checks aren't in this record: the province's Algae Watch map and mussel monitoring aren't published as open data. For swimming, check the regional health authority's beach advisories; for blooms and mussels, ask the province's regional environment office or the local lake association.

Source: BC Environmental Monitoring Data System (EnMoDS) results, Environmental Monitoring and Analysis Branch, Province of BC, records to September 19, 2026 (Open Government Licence – British Columbia); lake outlines and names: Freshwater Atlas lakes, Province of BC (Open Government Licence – British Columbia). Summaries by PlaceDossier.