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

Lake County Lake Quality

South Dakota, 18 lakes, measured by SD DANR

There are 18 monitored lakes in Lake County. The mix is varied enough that the county-level average tells you the broad strokes, not the choose-this-cabin specifics. The 18 monitored lakes in Lake County carry whatever clarity, phosphorus, and chlorophyll-a readings SD DANR 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 Lake County

Top-rated places to stay near Lake County

Prices for Oct 16–18, 4 adults. Change dates on the map below.

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Quick Answers for Lake County

Cleanest lakes in Lake County →Best swimming lakes in South Dakota →

Planning a trip? Check special fishing regulations for Lake Winfred — or check the official South Dakota fishing regulations.

All Lakes in Lake County

18 lakes · 0 ranked on readings, 18 without enough sampling0 lakes ranked on readings · 18 without enough sampling, hidden

#LakeClarityPhosphorusAlgaeTrophicAccess
Lake WinfredLakeNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
Lake HenryLakeNo recent samplesNo recent samplesNo recent samplesNo recent samples✓ Public
Lake GeorgeLakeNo recent samplesNo recent samplesNo recent samplesNo recent samples✓ Public
Herman SloughLakeNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
Round LakeLakeNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
Long LakeLakeNo recent samplesNo recent samplesNo recent samplesNo recent samples✓ Public
Spring LakeLakeNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
Buffalo SloughLakeNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
Milwaukee LakeLakeNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
Pelican LakeLakeNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
Green LakeLakeNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
Molumby SloughLakeNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
Mud LakeLakeNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
East Lake BadusLakeNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
Dry LakeLakeNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
Lake BadusLakeNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
Gilman LakeLakeNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
Crane SloughLakeNo 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 South Dakota

Pennington County

2 lakes

Roberts County

20 lakes

Hughes County

2 lakes

Charles Mix County

8 lakes

Walworth County

4 lakes

Sully County

9 lakes

Browse every South Dakota 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 South Dakota Department of Agriculture and Natural Resources. See data sources.