Cleanest Lakes in Deuel County, South Dakota
Briggs Lake in Deuel County leads the rankings on measured clarity and nutrients. Below are the top 11 cleanest monitored lakes in Deuel County, South Dakota, ranked on EPA nutrient and algae measurements.
Ranked List
| # | Lake | County | Clarity | Phosphorus | Algae |
|---|---|---|---|---|---|
| 1 | Briggs Lake | Deuel | - | - | - |
| 2 | Lake Francis | Deuel | - | - | - |
| 3 | Lone Tree Lake | Deuel | - | - | - |
| 4 | North Coteau Lake | Deuel | - | - | - |
| 5 | South Coteau Lake | Deuel | - | - | - |
| 6 | East Coteau Lake | Deuel | - | - | - |
| 7 | Ketchum Lake | Deuel | - | - | - |
| 8 | Lake Sutton | Deuel | - | - | - |
| 9 | Cottonwood Slough | Deuel | - | - | - |
| 10 | South Slough | Deuel | - | - | - |
| 11 | Culver Lake | Deuel | - | - | - |
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