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

Rainy River District County Lake Quality

Ontario, 78 lakes, measured by Ontario MECP

Rainy River District County in Ontario carries 78 monitored lakes — one of the lake-richer counties in our dataset. Coverage that dense usually reflects active lake-association sampling alongside state-agency monitoring. The 78 monitored lakes in Rainy River 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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Cleanest lakes in Rainy River District County →Best swimming lakes in Ontario →

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

All Lakes in Rainy River District County

78 lakes · 0 ranked on readings, 78 without enough sampling0 lakes ranked on readings · 78 without enough sampling, hidden

Include not-rated lakes (78)

Lake	Clarity	Phosphorus	Algae	Trophic	Access
Apungsisagen LakeRainy River District	5.2 ft	19.6 µg/L	No recent samples	No recent samples	Not recorded
Burditt LakeRainy River District	14.8 ft	7.9 µg/L	No recent samples	No recent samples	Not recorded
Crooked Pine LakeRainy River District	11.5 ft	8.2 µg/L	No recent samples	No recent samples	Not recorded
Crystal LakeRainy River District	17.4 ft	8.2 µg/L	No recent samples	No recent samples	Not recorded
Despair LakeRainy River District	6.2 ft	10.1 µg/L	No recent samples	No recent samples	Not recorded
Eva LakeRainy River District	26.6 ft	5.2 µg/L	No recent samples	No recent samples	Not recorded
Factor LakeRainy River District	No recent samples	5 µg/L	No recent samples	No recent samples	Not recorded
Lerome LakeRainy River District	13.9 ft	10.5 µg/L	No recent samples	No recent samples	Not recorded
Little Vermillion LakeRainy River District	5.6 ft	15.6 µg/L	No recent samples	No recent samples	Not recorded
Mccaulay LakeRainy River District	11.5 ft	7.1 µg/L	No recent samples	No recent samples	Not recorded
Namakan LakeRainy River District	7.9 ft	9.5 µg/L	No recent samples	No recent samples	Not recorded
Niobe LakeRainy River District	No recent samples	13.2 µg/L	No recent samples	No recent samples	Not recorded
Nym LakeRainy River District	No recent samples	6.7 µg/L	No recent samples	No recent samples	Not recorded
Off LakeRainy River District	4.6 ft	18.7 µg/L	No recent samples	No recent samples	Not recorded
Plateau LakeRainy River District	7.7 ft	9.5 µg/L	No recent samples	No recent samples	Not recorded
Rainy LakeRainy River District	9.2 ft	13.9 µg/L	No recent samples	No recent samples	Not recorded
Squeers LakeRainy River District	16.4 ft	9 µg/L	No recent samples	No recent samples	Not recorded
Wegg LakeRainy River District	8.2 ft	No recent samples	No recent samples	No recent samples	Not recorded
Weller LakeRainy River District	7.5 ft	No recent samples	No recent samples	No recent samples	Not recorded
Nydia LakeRainy River District	No recent samples	6.4 µg/L	No recent samples	No recent samples	Not recorded
Pickwick LakeRainy River District	No recent samples	11.9 µg/L	No recent samples	No recent samples	Not recorded
Rainy River LakeRainy River District	No recent samples	49.7 µg/L	No recent samples	No recent samples	Not recorded
Surprise LakeRainy River District	No recent samples	9.8 µg/L	No recent samples	No recent samples	Not recorded
Abbess LakeRainy River District	9.2 ft	9 µg/L	No recent samples	No recent samples	Not recorded
Argo LakeRainy River District	15.9 ft	6.5 µg/L	No recent samples	No recent samples	Not recorded
Bad Vermilion LakeRainy River District	12.8 ft	9.4 µg/L	No recent samples	No recent samples	Not recorded
Beaverhouse LakeRainy River District	21.1 ft	4.7 µg/L	No recent samples	No recent samples	Not recorded
Bethune LakeRainy River District	8.2 ft	6.7 µg/L	No recent samples	No recent samples	Not recorded
Blackstone LakeRainy River District	12.5 ft	5.6 µg/L	No recent samples	No recent samples	Not recorded
Burt LakeRainy River District	21.2 ft	3.6 µg/L	No recent samples	No recent samples	Not recorded
Calder LakeRainy River District	6.2 ft	12.9 µg/L	No recent samples	No recent samples	Not recorded
Calm LakeRainy River District	11.8 ft	9.6 µg/L	No recent samples	No recent samples	Not recorded
Camel LakeRainy River District	6.1 ft	12.8 µg/L	No recent samples	No recent samples	Not recorded
Captain Tom LakeRainy River District	5.6 ft	24.5 µg/L	No recent samples	No recent samples	Not recorded
Cirrus LakeRainy River District	14.1 ft	5.3 µg/L	No recent samples	No recent samples	Not recorded
Clearwater West LakeRainy River District	26.9 ft	4.7 µg/L	No recent samples	No recent samples	Not recorded
Conmee LakeRainy River District	8.4 ft	8.6 µg/L	No recent samples	No recent samples	Not recorded
Crowrock LakeRainy River District	14.1 ft	4.6 µg/L	No recent samples	No recent samples	Not recorded
Dovetail LakeRainy River District	10.8 ft	9.4 µg/L	No recent samples	No recent samples	Not recorded
Eltrut LakeRainy River District	4.3 ft	10.7 µg/L	No recent samples	No recent samples	Not recorded
Farley LakeRainy River District	3.6 ft	15.5 µg/L	No recent samples	No recent samples	Not recorded
Finlayson LakeRainy River District	10.5 ft	10.7 µg/L	No recent samples	No recent samples	Not recorded
Heron LakeRainy River District	4.9 ft	12.5 µg/L	No recent samples	No recent samples	Not recorded
West Jackfish LakeRainy River District	6.6 ft	17.9 µg/L	No recent samples	No recent samples	Not recorded
Jean LakeRainy River District	16.2 ft	6.4 µg/L	No recent samples	No recent samples	Not recorded
Kahshahpi LakeRainy River District	14.1 ft	4.9 µg/L	No recent samples	No recent samples	Not recorded
Keats LakeRainy River District	6.6 ft	9.1 µg/L	No recent samples	No recent samples	Not recorded
Lac la Croix LakeRainy River District	4.3 ft	9.9 µg/L	No recent samples	No recent samples	Not recorded
Lilac LakeRainy River District	9.7 ft	11.6 µg/L	No recent samples	No recent samples	Not recorded
Little Kishkutena LakeRainy River District	8.2 ft	13.6 µg/L	No recent samples	No recent samples	Not recorded
Little Turtle LakeRainy River District	4.9 ft	13 µg/L	No recent samples	No recent samples	Not recorded
Louisa LakeRainy River District	22 ft	6 µg/L	No recent samples	No recent samples	Not recorded
Lower Marmion LakeRainy River District	12.8 ft	11.2 µg/L	No recent samples	No recent samples	Not recorded
Lowry LakeRainy River District	4.9 ft	24.1 µg/L	No recent samples	No recent samples	Not recorded
Manion LakeRainy River District	6.6 ft	10.1 µg/L	No recent samples	No recent samples	Not recorded
Mcaree LakeRainy River District	7.1 ft	16 µg/L	No recent samples	No recent samples	Not recorded
Mcewen LakeRainy River District	11.2 ft	6.9 µg/L	No recent samples	No recent samples	Not recorded
Mercutio LakeRainy River District	6.6 ft	13.1 µg/L	No recent samples	No recent samples	Not recorded
Olifaunt LakeRainy River District	9.8 ft	9.2 µg/L	No recent samples	No recent samples	Not recorded
Other Man LakeRainy River District	9.8 ft	15 µg/L	No recent samples	No recent samples	Not recorded
Otukamamoan LakeRainy River District	9.5 ft	9.3 µg/L	No recent samples	No recent samples	Not recorded
Perch LakeRainy River District	6.9 ft	12 µg/L	No recent samples	No recent samples	Not recorded
Pettit LakeRainy River District	13.8 ft	7.6 µg/L	No recent samples	No recent samples	Not recorded
Pickerel LakeRainy River District	13.8 ft	5.7 µg/L	No recent samples	No recent samples	Not recorded
Pickerel LakeRainy River District	12.5 ft	4.8 µg/L	No recent samples	No recent samples	Not recorded
Poohbah LakeRainy River District	13.1 ft	12 µg/L	No recent samples	No recent samples	Not recorded
Rawn ReservoirRainy River District	6.2 ft	16.7 µg/L	No recent samples	No recent samples	Not recorded
Sandbeach LakeRainy River District	7.7 ft	5.1 µg/L	No recent samples	No recent samples	Not recorded
Sarah LakeRainy River District	15.3 ft	4.9 µg/L	No recent samples	No recent samples	Not recorded
Sheridan LakeRainy River District	15.4 ft	7.3 µg/L	No recent samples	No recent samples	Not recorded
Steep Rock LakeRainy River District	9.8 ft	10.9 µg/L	No recent samples	No recent samples	Not recorded
This Man LakeRainy River District	12.5 ft	7 µg/L	No recent samples	No recent samples	Not recorded
Thompson LakeRainy River District	12.5 ft	8.9 µg/L	No recent samples	No recent samples	Not recorded
Turtle LakeRainy River District	13.5 ft	4.8 µg/L	No recent samples	No recent samples	Not recorded
Upper Marmion LakeRainy River District	6.6 ft	13.6 µg/L	No recent samples	No recent samples	Not recorded
Wasaw LakeRainy River District	4.9 ft	26.3 µg/L	No recent samples	No recent samples	Not recorded
Wolesley LakeRainy River District	9 ft	9.3 µg/L	No recent samples	No recent samples	Not recorded
Your LakeRainy River District	7.2 ft	9.5 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.