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

Kootenai County Lake Quality

Idaho, 22 lakes, measured by Idaho DEQ

There are 22 monitored lakes in Kootenai County. The mix is varied enough that the county-level average tells you the broad strokes, not the choose-this-cabin specifics. The 22 monitored lakes in Kootenai County carry whatever clarity, phosphorus, and chlorophyll-a readings Idaho DEQ 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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Where to stay near Kootenai County

Top-rated places to stay near Kootenai County

Prices for Oct 30–Nov 1, 4 adults. Change dates on the map below.

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Quick Answers for Kootenai County

Cleanest lakes in Kootenai County →Cleanest lakes in Idaho →Best swimming lakes in Idaho →

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

All Lakes in Kootenai County

22 lakes · 0 ranked on readings, 22 without enough sampling0 lakes ranked on readings · 22 without enough sampling, hidden

#LakeClarityPhosphorusAlgaeTrophicMax DepthAccess
Usgs LakeKootenaiNo recent samples6.5 µg/L1.7 µg/LNo recent samplesNo recent samples✓ Public
Ideq LakeKootenaiNo recent samples5.5 µg/L1.1 µg/LNo recent samplesNo recent samples✓ Public
Coeur D' Alene LakeKootenaiNo recent samples12 µg/LNo recent samplesNo recent samplesNo recent samples✓ Public
Thompson LakeKootenaiNo recent samplesNo recent samplesNo recent samplesNo recent samples24.9 ft✓ Public
Anderson LakeKootenaiNo recent samplesNo recent samplesNo recent samplesNo recent samples15.1 ft✓ Public
Thompson LakeKootenaiNo recent samplesNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
Harrison SloughKootenaiNo recent samplesNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
Chatcolet LakeKootenaiNo recent samplesNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
Blue LakeKootenaiNo recent samplesNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
Swan LakeKootenaiNo recent samplesNo recent samplesNo recent samplesNo recent samples15.1 ftNot recorded
Black LakeKootenaiNo recent samplesNo recent samplesNo recent samplesNo recent samples24.9 ftNot recorded
Medicine LakeKootenaiNo recent samplesNo recent samplesNo recent samplesNo recent samples15.1 ftNot recorded
Cave LakeKootenaiNo recent samplesNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
Killarney LakeKootenaiNo recent samplesNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
Rose LakeKootenaiNo recent samplesNo recent samplesNo recent samplesNo recent samples29.9 ft✓ Public
Lake HaydenKootenaiNo recent samplesNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
Alpine LakeKootenaiNo recent samplesNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
Chilco LakeKootenaiNo recent samplesNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
Avondale LakeKootenaiNo recent samplesNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
Fernan LakeKootenaiNo recent samplesNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
Hauser LakeKootenaiNo recent samplesNo recent samplesNo recent samplesNo recent samplesNo recent samples✓ Public
Spirit LakeKootenaiNo recent samplesNo recent samplesNo recent samplesNo recent samplesNo recent samples✓ Public

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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Other Counties in Idaho

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2 lakes

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Bear Lake County

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Valley County

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Bonneville County

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Blaine County

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Browse every Idaho lake, or the full directory of lakes across all United States (49 states), Canada (Ontario, Québec, Nova Scotia, British Columbia and Newfoundland and Labrador), and 38 other country hubs..

Source: the Idaho Department of Environmental Quality. See data sources.