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

Okanogan County Lake Quality

Washington, 58 lakes, measured by Washington Ecology

Okanogan County has 58 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 58 monitored lakes in Okanogan County carry whatever clarity, phosphorus, and chlorophyll-a readings Washington Ecology 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 Okanogan County

Top-rated places to stay near Okanogan County

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Quick Answers for Okanogan County

Cleanest lakes in Okanogan County →Best swimming lakes in Washington →

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

All Lakes in Okanogan County

58 lakes · 0 ranked on readings, 58 without enough sampling0 lakes ranked on readings · 58 without enough sampling, hidden

#LakeClarityPhosphorusAlgaeTrophicMax DepthAccess
Louis LakeOkanoganNo recent samplesNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
Patterson LakeOkanoganNo recent samplesNo recent samplesNo recent samplesNo recent samplesNo recent samples✓ Public
Pearrygin LakeOkanoganNo recent samplesNo recent samplesNo recent samplesNo recent samplesNo recent samples✓ Public
Big Twin LakeOkanoganNo recent samplesNo recent samplesNo recent samplesNo recent samplesNo recent samples✓ Public
Moccasin LakeOkanoganNo recent samplesNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
Davis LakeOkanoganNo recent samplesNo recent samplesNo recent samplesNo recent samplesNo recent samples✓ Public
Roberts LakeOkanoganNo recent samplesNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
Horseshoe LakeOkanoganNo recent samplesNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
Medicine LakeOkanoganNo recent samplesNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
Booher LakeOkanoganNo recent samplesNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
Alkali LakeOkanoganNo recent samplesNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
Evans LakeOkanoganNo recent samplesNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
Brown LakeOkanoganNo recent samplesNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
Green LakeOkanoganNo recent samplesNo recent samplesNo recent samplesNo recent samplesNo recent samples✓ Public
Leader LakeOkanoganNo recent samplesNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
Soap LakeOkanoganNo recent samplesNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
Rat LakeOkanoganNo recent samplesNo recent samplesNo recent samplesNo recent samplesNo recent samples✓ Public
Alta LakeOkanoganNo recent samplesNo recent samplesNo recent samplesNo recent samples75 ft✓ Public
Rufus Woods LakeOkanoganNo recent samplesNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
Duley LakeOkanoganNo recent samplesNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
White LakesOkanoganNo recent samplesNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
Freidlander LakeOkanoganNo recent samplesNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
Goose LakeOkanoganNo recent samplesNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
Grant LakeOkanoganNo recent samplesNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
Rebecca LakeOkanoganNo recent samplesNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
Buffalo LakeOkanoganNo recent samplesNo recent samplesNo recent samplesNo recent samplesNo recent samples✓ Public
Johnson LakeOkanoganNo recent samplesNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
Owhi LakeOkanoganNo recent samplesNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
Little Owhi LakeOkanoganNo recent samplesNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
Lyman LakeOkanoganNo recent samplesNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
Crawfish LakeOkanoganNo recent samplesNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
Omak LakeOkanoganNo recent samplesNo recent samplesNo recent samplesNo recent samples325 ftNot recorded
Figure Eight LakeOkanoganNo recent samplesNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
Patterson LakeOkanoganNo recent samplesNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
Duck LakeOkanoganNo recent samplesNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
Aeneas LakeOkanoganNo recent samplesNo recent samplesNo recent samplesNo recent samplesNo recent samples✓ Public
Whitestone LakeOkanoganNo recent samplesNo recent samplesNo recent samplesNo recent samplesNo recent samples✓ Public
Wannacut LakeOkanoganNo recent samplesNo recent samplesNo recent samplesNo recent samples140 ftNot recorded
Horseshoe LakeOkanoganNo recent samplesNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
Fanchers Dam ReservoirOkanoganNo recent samplesNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
Muskrat LakeOkanoganNo recent samplesNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
Lost LakeOkanoganNo recent samplesNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
Bonaparte LakeOkanoganNo recent samplesNo recent samplesNo recent samplesNo recent samplesNo recent samples✓ Public
Walker LakeOkanoganNo recent samplesNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
Beaver LakeOkanoganNo recent samplesNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
Beth LakeOkanoganNo recent samplesNo recent samplesNo recent samplesNo recent samplesNo recent samples✓ Public
Sidley LakeOkanoganNo recent samplesNo recent samplesNo recent samplesNo recent samplesNo recent samples✓ Public
Blue LakeOkanoganNo recent samplesNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
Osoyoos LakeOkanoganNo recent samplesNo recent samplesNo recent samplesNo recent samplesNo recent samples✓ Public
Chopaka LakeOkanoganNo recent samplesNo recent samplesNo recent samplesNo recent samples71 ftNot recorded
Lenton LakeOkanoganNo recent samplesNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
Alkali flatOkanoganNo recent samplesNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
Palmer LakeOkanoganNo recent samplesNo recent samplesNo recent samplesNo recent samples70 ftNot recorded
Conners LakeOkanoganNo recent samplesNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
Fish LakeOkanoganNo recent samplesNo recent samplesNo recent samplesNo recent samplesNo recent samples✓ Public
Blue LakeOkanoganNo recent samplesNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
Black LakeOkanoganNo recent samplesNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
Big Hidden LakeOkanoganNo recent samplesNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot 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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Other Counties in Washington

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Browse every Washington 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 Washington State Department of Ecology. See data sources.