Late afternoon sun over Slim Lake, scattering a bright path across wind-textured water

Thunder Bay District County Lake Quality

Ontario, 288 lakes, measured by Ontario MECP

Thunder Bay District County has 288 monitored lakes, enough that within-county variation matters as much as the county average. Some are deep glacial basins, others are shallow agricultural-watershed waters, and the measurements reflect that mix. The 288 monitored lakes in Thunder Bay District County carry whatever clarity, phosphorus, and chlorophyll-a readings Ontario MECP has published, shown as reported.

Most of the county's monitored lakes are shallow, under 50 feet, which means wind keeps the water column mixed all summer and sediment-bound phosphorus releases back into the surface layer whenever the bottom is disturbed.

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Planning a trip? Check special fishing regulations for Arrow Lake — or check the official Ontario fishing regulations.

All Lakes in Thunder Bay District County

288 lakes · 0 ranked on readings, 288 without enough sampling0 lakes ranked on readings · 288 without enough sampling, hidden

Include not-rated lakes (288)

Lake	Clarity	Phosphorus	Algae	Trophic	Access
Arrow LakeThunder Bay District	24 ft	7.5 µg/L	No recent samples	No recent samples	Not recorded
Barnum LakeThunder Bay District	7.2 ft	9.2 µg/L	No recent samples	No recent samples	Not recorded
Bass LakeThunder Bay District	11.8 ft	8.3 µg/L	No recent samples	No recent samples	Not recorded
Beaverkit LakeThunder Bay District	2.6 ft	11.4 µg/L	No recent samples	No recent samples	Not recorded
Burk LakeThunder Bay District	9.8 ft	6 µg/L	No recent samples	No recent samples	Not recorded
Cloud LakeThunder Bay District	4.3 ft	23.9 µg/L	No recent samples	No recent samples	Not recorded
Cox LakeThunder Bay District	2 ft	51.3 µg/L	No recent samples	No recent samples	Not recorded
Cummins LakeThunder Bay District	5.2 ft	11.3 µg/L	No recent samples	No recent samples	Not recorded
Cushing LakeThunder Bay District	3.8 ft	21.1 µg/L	No recent samples	No recent samples	Not recorded
Deception LakeThunder Bay District	20.2 ft	5.8 µg/L	No recent samples	No recent samples	Not recorded
Elbow LakeThunder Bay District	9.5 ft	8.3 µg/L	No recent samples	No recent samples	Not recorded
Fodder LakeThunder Bay District	3.6 ft	13.1 µg/L	No recent samples	No recent samples	Not recorded
Greenpike LakeThunder Bay District	6.4 ft	8.3 µg/L	No recent samples	No recent samples	Not recorded
Greenwater LakeThunder Bay District	12.6 ft	13 µg/L	No recent samples	No recent samples	Not recorded
Ham LakeThunder Bay District	6.2 ft	11.3 µg/L	No recent samples	No recent samples	Not recorded
Hawkeye LakeThunder Bay District	No recent samples	12.8 µg/L	No recent samples	No recent samples	Not recorded
Hazelwood LakeThunder Bay District	No recent samples	8.3 µg/L	No recent samples	No recent samples	Not recorded
Hoof LakeThunder Bay District	No recent samples	15.9 µg/L	No recent samples	No recent samples	Not recorded
Howcum LakeThunder Bay District	5.7 ft	12.6 µg/L	No recent samples	No recent samples	Not recorded
Icarus LakeThunder Bay District	11.8 ft	9.2 µg/L	No recent samples	No recent samples	Not recorded
Iron Range LakeThunder Bay District	8.9 ft	7.7 µg/L	No recent samples	No recent samples	Not recorded
Island LakeThunder Bay District	12.6 ft	8.2 µg/L	No recent samples	No recent samples	Not recorded
Lac des Mille Lacs LakeThunder Bay District	4.3 ft	22.7 µg/L	No recent samples	No recent samples	Not recorded
Lenore LakeThunder Bay District	6.6 ft	12.3 µg/L	No recent samples	No recent samples	Not recorded
Little Athelstane LakeThunder Bay District	No recent samples	11.9 µg/L	No recent samples	No recent samples	Not recorded
Little Cedar LakeThunder Bay District	6.2 ft	16.4 µg/L	No recent samples	No recent samples	Not recorded
Loon LakeThunder Bay District	No recent samples	8.9 µg/L	No recent samples	No recent samples	Not recorded
Lottit LakeThunder Bay District	4.9 ft	11.8 µg/L	No recent samples	No recent samples	Not recorded
Lyne LakeThunder Bay District	9.8 ft	7.1 µg/L	No recent samples	No recent samples	Not recorded
Maccormack LakeThunder Bay District	6.2 ft	9.2 µg/L	No recent samples	No recent samples	Not recorded
Madalaine LakeThunder Bay District	6.6 ft	9.8 µg/L	No recent samples	No recent samples	Not recorded
Marks LakeThunder Bay District	6.9 ft	10.4 µg/L	No recent samples	No recent samples	Not recorded
Myrt LakeThunder Bay District	No recent samples	6.4 µg/L	No recent samples	No recent samples	Not recorded
No Name LakeThunder Bay District	9.2 ft	No recent samples	No recent samples	No recent samples	Not recorded
Oliver LakeThunder Bay District	19 ft	5.2 µg/L	No recent samples	No recent samples	Not recorded
One Island LakeThunder Bay District	6.1 ft	8 µg/L	No recent samples	No recent samples	Not recorded
Pagwachuan LakeThunder Bay District	17.4 ft	No recent samples	No recent samples	No recent samples	Not recorded
Peterkin LakeThunder Bay District	7.5 ft	12.2 µg/L	No recent samples	No recent samples	Not recorded
Prelate LakeThunder Bay District	No recent samples	14.5 µg/L	No recent samples	No recent samples	Not recorded
Reta LakeThunder Bay District	6.1 ft	7.4 µg/L	No recent samples	No recent samples	Not recorded
Roundtable LakeThunder Bay District	7.9 ft	8.8 µg/L	No recent samples	No recent samples	Not recorded
Shaco LakeThunder Bay District	6.4 ft	8 µg/L	No recent samples	No recent samples	Not recorded
Shebandowan LakeThunder Bay District	8 ft	12 µg/L	No recent samples	No recent samples	Not recorded
Shebandowan LakeThunder Bay District	9.2 ft	7.9 µg/L	No recent samples	No recent samples	Not recorded
Silver LakeThunder Bay District	16.1 ft	5.1 µg/L	No recent samples	No recent samples	Not recorded
Spike LakeThunder Bay District	7.4 ft	10.5 µg/L	No recent samples	No recent samples	Not recorded
Sunbow LakeThunder Bay District	7.5 ft	8.9 µg/L	No recent samples	No recent samples	Not recorded
Sunday LakeThunder Bay District	No recent samples	13.4 µg/L	No recent samples	No recent samples	Not recorded
Sunset LakeThunder Bay District	15.6 ft	7.9 µg/L	No recent samples	No recent samples	Not recorded
Superior LakeThunder Bay District	10.8 ft	5.2 µg/L	No recent samples	No recent samples	Not recorded
Surprise LakeThunder Bay District	5.6 ft	10.8 µg/L	No recent samples	No recent samples	Not recorded
Swallow LakeThunder Bay District	No recent samples	23.4 µg/L	No recent samples	No recent samples	Not recorded
Tomlinson LakeThunder Bay District	7.5 ft	9.1 µg/L	No recent samples	No recent samples	Not recorded
Tornroos LakeThunder Bay District	9.2 ft	9.3 µg/L	No recent samples	No recent samples	Not recorded
Trout LakeThunder Bay District	5.9 ft	10.5 µg/L	No recent samples	No recent samples	Not recorded
Two Island LakeThunder Bay District	No recent samples	11.1 µg/L	No recent samples	No recent samples	Not recorded
Upper Hunter'S LakeThunder Bay District	9.5 ft	6.8 µg/L	No recent samples	No recent samples	Not recorded
Upsala LakeThunder Bay District	7.9 ft	No recent samples	No recent samples	No recent samples	Not recorded
Wabikoba LakeThunder Bay District	6.6 ft	No recent samples	No recent samples	No recent samples	Not recorded
Walker LakeThunder Bay District	9 ft	5.4 µg/L	No recent samples	No recent samples	Not recorded
Warnica LakeThunder Bay District	9.5 ft	12.9 µg/L	No recent samples	No recent samples	Not recorded
Wartman LakeThunder Bay District	4.9 ft	9 µg/L	No recent samples	No recent samples	Not recorded
White LakeThunder Bay District	11.2 ft	8.2 µg/L	No recent samples	No recent samples	Not recorded
Whitefish LakeThunder Bay District	8 ft	10.7 µg/L	No recent samples	No recent samples	Not recorded
Windigoostigwan LakeThunder Bay District	11.5 ft	5.6 µg/L	No recent samples	No recent samples	Not recorded
Deer LakeThunder Bay District	No recent samples	8.2 µg/L	No recent samples	No recent samples	Not recorded
Elizabeth LakeThunder Bay District	No recent samples	9.7 µg/L	No recent samples	No recent samples	Not recorded
Firehill LakeThunder Bay District	No recent samples	8.5 µg/L	No recent samples	No recent samples	Not recorded
Florence LakeThunder Bay District	No recent samples	6.1 µg/L	No recent samples	No recent samples	Not recorded
Foxxe LakeThunder Bay District	No recent samples	4.4 µg/L	No recent samples	No recent samples	Not recorded
Frazer LakeThunder Bay District	No recent samples	6.8 µg/L	No recent samples	No recent samples	Not recorded
Hicks LakeThunder Bay District	No recent samples	8.9 µg/L	No recent samples	No recent samples	Not recorded
Jackfish LakeThunder Bay District	No recent samples	10.1 µg/L	No recent samples	No recent samples	Not recorded
Little Santoy LakeThunder Bay District	No recent samples	7.1 µg/L	No recent samples	No recent samples	Not recorded
Lofquist LakeThunder Bay District	No recent samples	6.2 µg/L	No recent samples	No recent samples	Not recorded
Maki LakeThunder Bay District	No recent samples	9.1 µg/L	No recent samples	No recent samples	Not recorded
Mary LakeThunder Bay District	No recent samples	11.3 µg/L	No recent samples	No recent samples	Not recorded
Mcleish LakeThunder Bay District	No recent samples	8.4 µg/L	No recent samples	No recent samples	Not recorded
Milton LakeThunder Bay District	No recent samples	16.6 µg/L	No recent samples	No recent samples	Not recorded
Paul LakeThunder Bay District	No recent samples	9 µg/L	No recent samples	No recent samples	Not recorded
Polly LakeThunder Bay District	No recent samples	11.6 µg/L	No recent samples	No recent samples	Not recorded
Rolland LakeThunder Bay District	No recent samples	7.6 µg/L	No recent samples	No recent samples	Not recorded
Sandstone LakeThunder Bay District	No recent samples	7.9 µg/L	No recent samples	No recent samples	Not recorded
Santoy LakeThunder Bay District	No recent samples	5.1 µg/L	No recent samples	No recent samples	Not recorded
Stewart LakeThunder Bay District	No recent samples	6.5 µg/L	No recent samples	No recent samples	Not recorded
Timmus LakeThunder Bay District	No recent samples	4.8 µg/L	No recent samples	No recent samples	Not recorded
Walkinshaw LakeThunder Bay District	No recent samples	10.5 µg/L	No recent samples	No recent samples	Not recorded
Whitelily LakeThunder Bay District	No recent samples	11.9 µg/L	No recent samples	No recent samples	Not recorded
Whitesand LakeThunder Bay District	15.1 ft	5.6 µg/L	No recent samples	No recent samples	Not recorded
Windigokan LakeThunder Bay District	No recent samples	8 µg/L	No recent samples	No recent samples	Not recorded
Yellowhammer LakeThunder Bay District	No recent samples	6.1 µg/L	No recent samples	No recent samples	Not recorded
Addie LakeThunder Bay District	6.2 ft	11.7 µg/L	No recent samples	No recent samples	Not recorded
Arc LakeThunder Bay District	7.5 ft	No recent samples	No recent samples	No recent samples	Not recorded
Arnott LakeThunder Bay District	23 ft	14.3 µg/L	No recent samples	No recent samples	Not recorded
Arrowroot LakeThunder Bay District	4.9 ft	8.2 µg/L	No recent samples	No recent samples	Not recorded
Athelstane L. LakeThunder Bay District	10.5 ft	8.5 µg/L	No recent samples	No recent samples	Not recorded
Atik L. LakeThunder Bay District	12.1 ft	8.3 µg/L	No recent samples	No recent samples	Not recorded
Bamoos LakeThunder Bay District	16.4 ft	12.3 µg/L	No recent samples	No recent samples	Not recorded
Barbara LakeThunder Bay District	10.8 ft	3.5 µg/L	No recent samples	No recent samples	Not recorded
Barbara LakeThunder Bay District	6.2 ft	12.5 µg/L	No recent samples	No recent samples	Not recorded
Batwing L. LakeThunder Bay District	5.6 ft	8.8 µg/L	No recent samples	No recent samples	Not recorded
Beatty L. LakeThunder Bay District	13.5 ft	9.7 µg/L	No recent samples	No recent samples	Not recorded
Beck LakeThunder Bay District	6.9 ft	11.1 µg/L	No recent samples	No recent samples	Not recorded
Bedivere LakeThunder Bay District	7.7 ft	13.6 µg/L	No recent samples	No recent samples	Not recorded
Bell LakeThunder Bay District	12.8 ft	No recent samples	No recent samples	No recent samples	Not recorded
Bertaud LakeThunder Bay District	6.2 ft	No recent samples	No recent samples	No recent samples	Not recorded
Big Duck LakeThunder Bay District	4.9 ft	12.1 µg/L	No recent samples	No recent samples	Not recorded
Bigamy LakeThunder Bay District	3.4 ft	10.1 µg/L	No recent samples	No recent samples	Not recorded
Bisect LakeThunder Bay District	11.5 ft	6.4 µg/L	No recent samples	No recent samples	Not recorded
Black Sturgeon L. LakeThunder Bay District	9.8 ft	4.4 µg/L	No recent samples	No recent samples	Not recorded
Blunder LakeThunder Bay District	5.1 ft	12.3 µg/L	No recent samples	No recent samples	Not recorded
Brightsand LakeThunder Bay District	4.9 ft	10.8 µg/L	No recent samples	No recent samples	Not recorded
Buckaday LakeThunder Bay District	9.4 ft	10.1 µg/L	No recent samples	No recent samples	Not recorded
Bukemiga LakeThunder Bay District	6.6 ft	23.3 µg/L	No recent samples	No recent samples	Not recorded
Burchell L. LakeThunder Bay District	20.7 ft	3.2 µg/L	No recent samples	No recent samples	Not recorded
Burrows LakeThunder Bay District	6.9 ft	11.4 µg/L	No recent samples	No recent samples	Not recorded
Cairngorm LakeThunder Bay District	8.7 ft	5.1 µg/L	No recent samples	No recent samples	Not recorded
Camel Read LakeThunder Bay District	13.1 ft	4.8 µg/L	No recent samples	No recent samples	Not recorded
Castle L. LakeThunder Bay District	16.7 ft	6.3 µg/L	No recent samples	No recent samples	Not recorded
Catlonite LakeThunder Bay District	6.2 ft	7.1 µg/L	No recent samples	No recent samples	Not recorded
Cavell LakeThunder Bay District	4.9 ft	6.6 µg/L	No recent samples	No recent samples	Not recorded
Charon LakeThunder Bay District	8.2 ft	15.6 µg/L	No recent samples	No recent samples	Not recorded
Circle L. LakeThunder Bay District	6.9 ft	10.5 µg/L	No recent samples	No recent samples	Not recorded
Clegge LakeThunder Bay District	8.9 ft	5.6 µg/L	No recent samples	No recent samples	Not recorded
Cliff LakeThunder Bay District	14.8 ft	5.5 µg/L	No recent samples	No recent samples	Not recorded
Crayfish LakeThunder Bay District	5.9 ft	8.6 µg/L	No recent samples	No recent samples	Not recorded
Crevasse LakeThunder Bay District	13.8 ft	6.9 µg/L	No recent samples	No recent samples	Not recorded
Cry L. LakeThunder Bay District	24.3 ft	4.2 µg/L	No recent samples	No recent samples	Not recorded
De Lesseps LakeThunder Bay District	11.5 ft	4.5 µg/L	No recent samples	No recent samples	Not recorded
Diablo LakeThunder Bay District	9.8 ft	11.4 µg/L	No recent samples	No recent samples	Not recorded
Dilla LakeThunder Bay District	8.5 ft	9.9 µg/L	No recent samples	No recent samples	Not recorded
Disraeli LakeThunder Bay District	13.1 ft	7.4 µg/L	No recent samples	No recent samples	Not recorded
Dog L. LakeThunder Bay District	7.5 ft	7.9 µg/L	No recent samples	No recent samples	Not recorded
Eileen LakeThunder Bay District	14.8 ft	11.1 µg/L	No recent samples	No recent samples	Not recorded
Elbow L. LakeThunder Bay District	8.2 ft	10 µg/L	No recent samples	No recent samples	Not recorded
Ellen LakeThunder Bay District	8.5 ft	4 µg/L	No recent samples	No recent samples	Not recorded
Empire LakeThunder Bay District	20.8 ft	12.2 µg/L	No recent samples	No recent samples	Not recorded
Fallingsnow L. LakeThunder Bay District	12.8 ft	5.3 µg/L	No recent samples	No recent samples	Not recorded
Fernow LakeThunder Bay District	13.1 ft	9.1 µg/L	No recent samples	No recent samples	Not recorded
Fitchie LakeThunder Bay District	5.2 ft	No recent samples	No recent samples	No recent samples	Not recorded
Fog LakeThunder Bay District	5.9 ft	No recent samples	No recent samples	No recent samples	Not recorded
Frain LakeThunder Bay District	4.9 ft	No recent samples	No recent samples	No recent samples	Not recorded
Frank LakeThunder Bay District	5.2 ft	12.5 µg/L	No recent samples	No recent samples	Not recorded
Gamsby LakeThunder Bay District	8.2 ft	6.8 µg/L	No recent samples	No recent samples	Not recorded
Gennis LakeThunder Bay District	8.5 ft	8.1 µg/L	No recent samples	No recent samples	Not recorded
Granite LakeThunder Bay District	8.2 ft	7.6 µg/L	No recent samples	No recent samples	Not recorded
Grassy LakeThunder Bay District	6.6 ft	9.8 µg/L	No recent samples	No recent samples	Not recorded
Greenbush LakeThunder Bay District	9.7 ft	7.3 µg/L	No recent samples	No recent samples	Not recorded
Greenwater LakeThunder Bay District	47.9 ft	1.8 µg/L	No recent samples	No recent samples	Not recorded
Greenwich L. LakeThunder Bay District	7.5 ft	4.2 µg/L	No recent samples	No recent samples	Not recorded
Greenwood LakeThunder Bay District	6.6 ft	9 µg/L	No recent samples	No recent samples	Not recorded
Grouse L. LakeThunder Bay District	15.1 ft	6.3 µg/L	No recent samples	No recent samples	Not recorded
Hamilton LakeThunder Bay District	9.2 ft	6.4 µg/L	No recent samples	No recent samples	Not recorded
Harmon LakeThunder Bay District	7.2 ft	8.3 µg/L	No recent samples	No recent samples	Not recorded
Heathcote LakeThunder Bay District	4.9 ft	6.4 µg/L	No recent samples	No recent samples	Not recorded
Hilma LakeThunder Bay District	10.5 ft	11.2 µg/L	No recent samples	No recent samples	Not recorded
Hine LakeThunder Bay District	6.9 ft	8.6 µg/L	No recent samples	No recent samples	Not recorded
Holinshead L. LakeThunder Bay District	5.9 ft	15.9 µg/L	No recent samples	No recent samples	Not recorded
Holly L. LakeThunder Bay District	6.6 ft	7.3 µg/L	No recent samples	No recent samples	Not recorded
Huronian L. LakeThunder Bay District	10.5 ft	5.3 µg/L	No recent samples	No recent samples	Not recorded
Innes L. LakeThunder Bay District	10 ft	7.4 µg/L	No recent samples	No recent samples	Not recorded
Jackfish LakeThunder Bay District	13.1 ft	9.3 µg/L	No recent samples	No recent samples	Not recorded
Jacob LakeThunder Bay District	6.2 ft	19.9 µg/L	No recent samples	No recent samples	Not recorded
Jeno LakeThunder Bay District	12.1 ft	18.6 µg/L	No recent samples	No recent samples	Not recorded
Jolly L. LakeThunder Bay District	5.2 ft	13.5 µg/L	No recent samples	No recent samples	Not recorded
Kagiano LakeThunder Bay District	11.5 ft	6.2 µg/L	No recent samples	No recent samples	Not recorded
Kamikau L. LakeThunder Bay District	10.8 ft	5.1 µg/L	No recent samples	No recent samples	Not recorded
Kashabowie L. LakeThunder Bay District	8.9 ft	7.8 µg/L	No recent samples	No recent samples	Not recorded
Kashishibog LakeThunder Bay District	8.2 ft	8.3 µg/L	No recent samples	No recent samples	Not recorded
Kawaweogama LakeThunder Bay District	9.4 ft	9.2 µg/L	No recent samples	No recent samples	Not recorded
Kearns L. LakeThunder Bay District	6.9 ft	10.9 µg/L	No recent samples	No recent samples	Not recorded
Kekekuab LakeThunder Bay District	4.9 ft	14.6 µg/L	No recent samples	No recent samples	Not recorded
Kenogamisis LakeThunder Bay District	3.3 ft	15.1 µg/L	No recent samples	No recent samples	Not recorded
Kilbarry LakeThunder Bay District	8.2 ft	7.9 µg/L	No recent samples	No recent samples	Not recorded
Kilgour LakeThunder Bay District	7.2 ft	8.2 µg/L	No recent samples	No recent samples	Not recorded
Killala LakeThunder Bay District	13.3 ft	7.4 µg/L	No recent samples	No recent samples	Not recorded
Klotz LakeThunder Bay District	10.3 ft	11 µg/L	No recent samples	No recent samples	Not recorded
Kwinkwaga LakeThunder Bay District	7.9 ft	6.6 µg/L	No recent samples	No recent samples	Not recorded
Lac des Iles LakeThunder Bay District	6.6 ft	18.4 µg/L	No recent samples	No recent samples	Not recorded
Des Mille Lacs LakeThunder Bay District	5.9 ft	17.7 µg/L	No recent samples	No recent samples	Not recorded
Lac du Milieu LakeThunder Bay District	5.9 ft	16.2 µg/L	No recent samples	No recent samples	Not recorded
Lake NipigonThunder Bay District	11.5 ft	9.2 µg/L	No recent samples	No recent samples	Not recorded
Little Hilma LakeThunder Bay District	7.2 ft	6 µg/L	No recent samples	No recent samples	Not recorded
Marks LakeThunder Bay District	3.9 ft	16.6 µg/L	No recent samples	No recent samples	Not recorded
Little Metionga LakeThunder Bay District	5.2 ft	12.7 µg/L	No recent samples	No recent samples	Not recorded
Little Moraine LakeThunder Bay District	22.6 ft	9.6 µg/L	No recent samples	No recent samples	Not recorded
Little North LakeThunder Bay District	19.7 ft	25.6 µg/L	No recent samples	No recent samples	Not recorded
Loganberry LakeThunder Bay District	4.9 ft	15.1 µg/L	No recent samples	No recent samples	Not recorded
Long LakeThunder Bay District	10.2 ft	7 µg/L	No recent samples	No recent samples	Not recorded
Lost L. LakeThunder Bay District	5.6 ft	9.1 µg/L	No recent samples	No recent samples	Not recorded
Louise LakeThunder Bay District	8.2 ft	7 µg/L	No recent samples	No recent samples	Not recorded
Lower Shebandowan LakeThunder Bay District	7.2 ft	10.5 µg/L	No recent samples	No recent samples	Not recorded
Macintosh LakeThunder Bay District	7.2 ft	7.5 µg/L	No recent samples	No recent samples	Not recorded
Mack LakeThunder Bay District	11.2 ft	16.2 µg/L	No recent samples	No recent samples	Not recorded
Mackenzie LakeThunder Bay District	6.6 ft	13.7 µg/L	No recent samples	No recent samples	Not recorded
Maggotte L. LakeThunder Bay District	5.2 ft	8.7 µg/L	No recent samples	No recent samples	Not recorded
Magone LakeThunder Bay District	26.2 ft	12.7 µg/L	No recent samples	No recent samples	Not recorded
Marie Louise LakeThunder Bay District	8.2 ft	8.6 µg/L	No recent samples	No recent samples	Not recorded
Mccrea LakeThunder Bay District	6.2 ft	7 µg/L	No recent samples	No recent samples	Not recorded
Mccrea LakeThunder Bay District	9.2 ft	7.4 µg/L	No recent samples	No recent samples	Not recorded
Mckay LakeThunder Bay District	11.5 ft	9.9 µg/L	No recent samples	No recent samples	Not recorded
Metionga LakeThunder Bay District	5.6 ft	10.2 µg/L	No recent samples	No recent samples	Not recorded
Middle Shebandowan LakeThunder Bay District	9 ft	7.4 µg/L	No recent samples	No recent samples	Not recorded
Middle Shebandowan LakeThunder Bay District	7.5 ft	10 µg/L	No recent samples	No recent samples	Not recorded
Mikinak LakeThunder Bay District	7.2 ft	10 µg/L	No recent samples	No recent samples	Not recorded
Minchin LakeThunder Bay District	15.7 ft	6.2 µg/L	No recent samples	No recent samples	Not recorded
Miniss L. LakeThunder Bay District	6.2 ft	No recent samples	No recent samples	No recent samples	Not recorded
Mishi LakeThunder Bay District	18 ft	3.9 µg/L	No recent samples	No recent samples	Not recorded
Mowe L. LakeThunder Bay District	8.2 ft	10.7 µg/L	No recent samples	No recent samples	Not recorded
Muskeg LakeThunder Bay District	5.6 ft	19.4 µg/L	No recent samples	No recent samples	Not recorded
Muskrat L. LakeThunder Bay District	5.9 ft	18.7 µg/L	No recent samples	No recent samples	Not recorded
Nalla LakeThunder Bay District	13 ft	20.2 µg/L	No recent samples	No recent samples	Not recorded
Nelson LakeThunder Bay District	6.6 ft	12.4 µg/L	No recent samples	No recent samples	Not recorded
North Mccrea LakeThunder Bay District	11.5 ft	5.7 µg/L	No recent samples	No recent samples	Not recorded
Northern Light L. LakeThunder Bay District	8.5 ft	11.4 µg/L	No recent samples	No recent samples	Not recorded
Obonga L. LakeThunder Bay District	9.2 ft	5.3 µg/L	No recent samples	No recent samples	Not recorded
Onaman LakeThunder Bay District	7.4 ft	10.4 µg/L	No recent samples	No recent samples	Not recorded
One Island LakeThunder Bay District	7.4 ft	4.2 µg/L	No recent samples	No recent samples	Not recorded
Oskawe LakeThunder Bay District	8.2 ft	9.5 µg/L	No recent samples	No recent samples	Not recorded
Pagwachuan LakeThunder Bay District	15.4 ft	6.8 µg/L	No recent samples	No recent samples	Not recorded
Pakashkan L. LakeThunder Bay District	9.8 ft	9.9 µg/L	No recent samples	No recent samples	Not recorded
Parks LakeThunder Bay District	10.3 ft	6.7 µg/L	No recent samples	No recent samples	Not recorded
Partridge LakeThunder Bay District	8.2 ft	6.5 µg/L	No recent samples	No recent samples	Not recorded
Pashkokogan LakeThunder Bay District	6.2 ft	No recent samples	No recent samples	No recent samples	Not recorded
Pearson LakeThunder Bay District	6.2 ft	16.2 µg/L	No recent samples	No recent samples	Not recorded
Penassen LakeThunder Bay District	6.6 ft	8.2 µg/L	No recent samples	No recent samples	Not recorded
Pinel LakeThunder Bay District	5.6 ft	8.9 µg/L	No recent samples	No recent samples	Not recorded
Pringle LakeThunder Bay District	17.6 ft	5.1 µg/L	No recent samples	No recent samples	Not recorded
Proctor LakeThunder Bay District	9.8 ft	8.3 µg/L	No recent samples	No recent samples	Not recorded
Purdom L. LakeThunder Bay District	5.2 ft	10.9 µg/L	No recent samples	No recent samples	Not recorded
Rabbitbelly LakeThunder Bay District	5.2 ft	12.2 µg/L	No recent samples	No recent samples	Not recorded
Randolph LakeThunder Bay District	9.8 ft	7.1 µg/L	No recent samples	No recent samples	Not recorded
Redhead LakeThunder Bay District	4.3 ft	9.3 µg/L	No recent samples	No recent samples	Not recorded
Ricestalk LakeThunder Bay District	4.3 ft	14.4 µg/L	No recent samples	No recent samples	Not recorded
Ripple LakeThunder Bay District	7.9 ft	7.9 µg/L	No recent samples	No recent samples	Not recorded
Rudge L. LakeThunder Bay District	9.8 ft	5.1 µg/L	No recent samples	No recent samples	Not recorded
Saganagons LakeThunder Bay District	10 ft	8.6 µg/L	No recent samples	No recent samples	Not recorded
Sandison LakeThunder Bay District	4.3 ft	7.3 µg/L	No recent samples	No recent samples	Not recorded
Sandspit LakeThunder Bay District	12.3 ft	10.7 µg/L	No recent samples	No recent samples	Not recorded
Sassenach LakeThunder Bay District	5.6 ft	6.2 µg/L	No recent samples	No recent samples	Not recorded
Savant LakeThunder Bay District	13.8 ft	No recent samples	No recent samples	No recent samples	Not recorded
Savas LakeThunder Bay District	4.6 ft	13.3 µg/L	No recent samples	No recent samples	Not recorded
Scruffy LakeThunder Bay District	7.2 ft	10 µg/L	No recent samples	No recent samples	Not recorded
Selwyn LakeThunder Bay District	4.3 ft	No recent samples	No recent samples	No recent samples	Not recorded
Seseganaga LakeThunder Bay District	7.5 ft	No recent samples	No recent samples	No recent samples	Not recorded
Shabuskwia LakeThunder Bay District	4.9 ft	9.7 µg/L	No recent samples	No recent samples	Not recorded
Shacabac LakeThunder Bay District	13.1 ft	19 µg/L	No recent samples	No recent samples	Not recorded
Shawanibis LakeThunder Bay District	7.2 ft	6.1 µg/L	No recent samples	No recent samples	Not recorded
Silver LakeThunder Bay District	7.5 ft	8.2 µg/L	No recent samples	No recent samples	Not recorded
Smye LakeThunder Bay District	4.9 ft	No recent samples	No recent samples	No recent samples	Not recorded
Snowshoe LakeThunder Bay District	6.6 ft	22.1 µg/L	No recent samples	No recent samples	Not recorded
South Beatty LakeThunder Bay District	8.2 ft	9.7 µg/L	No recent samples	No recent samples	Not recorded
Sparkling L. LakeThunder Bay District	6.6 ft	8.7 µg/L	No recent samples	No recent samples	Not recorded
Sprat LakeThunder Bay District	3.9 ft	9.5 µg/L	No recent samples	No recent samples	Not recorded
Springwater LakeThunder Bay District	13.5 ft	10.9 µg/L	No recent samples	No recent samples	Not recorded
Squeers LakeThunder Bay District	19.7 ft	11.4 µg/L	No recent samples	No recent samples	Not recorded
Stetham L. LakeThunder Bay District	10.2 ft	5.9 µg/L	No recent samples	No recent samples	Not recorded
Stingray LakeThunder Bay District	9.8 ft	5.3 µg/L	No recent samples	No recent samples	Not recorded
Sturgeon LakeThunder Bay District	21 ft	No recent samples	No recent samples	No recent samples	Not recorded
Tilly L. LakeThunder Bay District	11.2 ft	3.9 µg/L	No recent samples	No recent samples	Not recorded
Tinto L. LakeThunder Bay District	10.5 ft	6.7 µg/L	No recent samples	No recent samples	Not recorded
Titmarsh L. LakeThunder Bay District	12.1 ft	5.2 µg/L	No recent samples	No recent samples	Not recorded
Twinhouse L. LakeThunder Bay District	11.8 ft	6.3 µg/L	No recent samples	No recent samples	Not recorded
Union LakeThunder Bay District	6.6 ft	13.6 µg/L	No recent samples	No recent samples	Not recorded
Unknown LakeThunder Bay District	19.7 ft	5.8 µg/L	No recent samples	No recent samples	Not recorded
Upper Hunters LakeThunder Bay District	6.6 ft	8.6 µg/L	No recent samples	No recent samples	Not recorded
Upper Kaogomok LakeThunder Bay District	4.9 ft	15.9 µg/L	No recent samples	No recent samples	Not recorded
Upper Shebandowan LakeThunder Bay District	9.2 ft	7.2 µg/L	No recent samples	No recent samples	Not recorded
Victoria LakeThunder Bay District	13.5 ft	No recent samples	No recent samples	No recent samples	Not recorded
Wabakimi LakeThunder Bay District	6.6 ft	6.6 µg/L	No recent samples	No recent samples	Not recorded
Wabinosh LakeThunder Bay District	5.6 ft	15.5 µg/L	No recent samples	No recent samples	Not recorded
Walotka L. LakeThunder Bay District	16.4 ft	5.4 µg/L	No recent samples	No recent samples	Not recorded
Wapikaimaski LakeThunder Bay District	5.7 ft	8.2 µg/L	No recent samples	No recent samples	Not recorded
Wawang LakeThunder Bay District	11.2 ft	10.6 µg/L	No recent samples	No recent samples	Not recorded
Waweig L. LakeThunder Bay District	19 ft	5.9 µg/L	No recent samples	No recent samples	Not recorded
Weaver LakeThunder Bay District	5.9 ft	12.1 µg/L	No recent samples	No recent samples	Not recorded
Webster LakeThunder Bay District	5.9 ft	8.3 µg/L	No recent samples	No recent samples	Not recorded
Weese LakeThunder Bay District	8.2 ft	7.5 µg/L	No recent samples	No recent samples	Not recorded
Weewullee L. LakeThunder Bay District	10.5 ft	7.7 µg/L	No recent samples	No recent samples	Not recorded
Weikwabinonaw LakeThunder Bay District	5.2 ft	10.1 µg/L	No recent samples	No recent samples	Not recorded
West Arm Armistice LakeThunder Bay District	4.9 ft	10.5 µg/L	No recent samples	No recent samples	Not recorded
White Otter LakeThunder Bay District	8.7 ft	9.1 µg/L	No recent samples	No recent samples	Not recorded
Whiteclay LakeThunder Bay District	6.6 ft	7 µg/L	No recent samples	No recent samples	Not recorded
Wideman L. LakeThunder Bay District	12.8 ft	6.5 µg/L	No recent samples	No recent samples	Not recorded
Wig LakeThunder Bay District	14.9 ft	9 µg/L	No recent samples	No recent samples	Not recorded
Wildgoose LakeThunder Bay District	11.6 ft	7.7 µg/L	No recent samples	No recent samples	Not recorded
Wintering LakeThunder Bay District	12.3 ft	8 µg/L	No recent samples	No recent samples	Not recorded
Young LakeThunder Bay District	3.6 ft	17.3 µg/L	No recent samples	No recent samples	Not recorded

NR = no nutrient or algae reading on record. The measurements are published as the authority reports them. Where the data comes from.

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Source: the Ontario Ministry of the Environment, Conservation and Parks. See data sources.