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

Minnehaha County Lake Quality

South Dakota, 11 lakes, measured by SD DANR

Minnehaha County has 11 monitored lakes — a thin enough sample that one or two stressed lakes can move the county average noticeably. Use the per-lake pages below for what actually matters. The 11 monitored lakes in Minnehaha 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 Minnehaha County

Top-rated places to stay near Minnehaha County

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Quick Answers for Minnehaha County

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

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

All Lakes in Minnehaha County

11 lakes · 0 ranked on readings, 11 without enough sampling0 lakes ranked on readings · 11 without enough sampling, hidden

#LakeClarityPhosphorusAlgaeTrophicMax DepthAccess
Fensterman SloughMinnehahaNo recent samplesNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
Grass LakeMinnehahaNo recent samplesNo recent samplesNo recent samplesNo recent samplesNo recent samples✓ Public
Rehfeldt SloughMinnehahaNo recent samplesNo recent samples82.4 µg/LNo recent samplesNo recent samplesNot recorded
Lost LakeMinnehahaNo recent samplesNo recent samplesNo recent samplesNo recent samples7 ft✓ Public
Englehardt SloughMinnehahaNo recent samplesNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
Beaver LakeMinnehahaNo recent samplesNo recent samplesNo recent samplesNo recent samplesNo recent samples✓ Public
Scotts SloughMinnehahaNo recent samplesNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
Lost LakeMinnehahaNo recent samplesNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
Diamond LakeMinnehahaNo recent samplesNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
Buffalo LakeMinnehahaNo recent samplesNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
Clear LakeMinnehahaNo 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 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.