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

Idaho County Lake Quality

Idaho, 26 lakes, measured by Idaho DEQ

The county-level average smooths over real differences — a single agricultural watershed near the southwest corner can pull the average down even if the rest of the county runs clean. The 26 monitored lakes in Idaho 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 Idaho County

Top-rated places to stay near Idaho County

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Quick Answers for Idaho County

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

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

All Lakes in Idaho County

26 lakes · 0 ranked on readings, 26 without enough sampling0 lakes ranked on readings · 26 without enough sampling, hidden

#LakeClarityPhosphorusAlgaeTrophicAccess
Black LakeIdahoNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
Sheepeater LakeIdahoNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
Fish LakeIdahoNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
Crystal LakeIdahoNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
Moores LakeIdahoNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
Hazard LakeIdahoNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
Big Hazard LakeIdahoNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
Upper Hazard LakeIdahoNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
Sheep LakeIdahoNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
Baldy LakeIdahoNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
Tolo LakeIdahoNo recent samplesNo recent samplesNo recent samplesNo recent samples✓ Public
Lizard LakesIdahoNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
Florence LakeIdahoNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
Elizabeth LakeIdahoNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
Old Man LakeIdahoNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
Long LakeIdahoNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
Fish LakeIdahoNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
Walton LakesIdahoNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
Hidden LakeIdahoNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
Big Sand LakeIdahoNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
Battle LakeIdahoNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
Cub LakeIdahoNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
White Cap LakesIdahoNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
Coquina LakeIdahoNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
Parachute LakeIdahoNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
White Sand LakeIdahoNo 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 Idaho

Gem County

2 lakes

Canyon County

2 lakes

Bear Lake County

3 lakes

Valley County

26 lakes

Bonneville County

9 lakes

Blaine County

12 lakes

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.