Douglas County Lake Quality
South Dakota, 3 lakes, measured by SD DANR
Douglas County has 3 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 3 monitored lakes in Douglas 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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Quick Answers for Douglas County
Planning a trip? Check special fishing regulations for Joubert Lake — or check the official South Dakota fishing regulations.
All Lakes in Douglas County
3 lakes · 0 ranked on readings, 3 without enough sampling0 lakes ranked on readings · 3 without enough sampling, hidden
| # | Lake | Clarity | Phosphorus | Algae | Trophic | Max Depth | Access |
|---|---|---|---|---|---|---|---|
| Joubert LakeDouglas | No recent samples | No recent samples | No recent samples | No recent samples | No recent samples | Not recorded | |
| New Holland LakeDouglas | No recent samples | No recent samples | No recent samples | No recent samples | No recent samples | Not recorded | |
| Corsica LakeDouglas | No recent samples | No recent samples | No recent samples | No recent samples | 7 ft | ✓ 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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Source: the South Dakota Department of Agriculture and Natural Resources. See data sources.