Clarke County Lake Quality
Iowa, 3 lakes, measured by Iowa DNR
Clarke 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. 2 of those lakes carry recent nutrient and algae readings. The county-level summary describes that subset, not every water body listed. Phosphorus and algae readings vary widely across Clarke County; the per-lake pages below carry the numbers.
The county's lakes lean shallow, which makes the readings sensitive to wind, sediment-resuspension, and any nutrient inputs from the watershed. The cleanest measured lake is West Lake Osceola.
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Quick Answers for Clarke County
Planning a trip? Check special fishing regulations for West Lake Osceola — or check the official Iowa fishing regulations.
All Lakes in Clarke County
3 lakes · 2 ranked on readings, 1 without enough sampling2 lakes ranked on readings · 1 without enough sampling, hidden
| # | Lake | Clarity | Phosphorus | Algae | Trophic | Access |
|---|---|---|---|---|---|---|
| 1 | West Lake OsceolaClarke | 2.2 ft | 75.5 µg/L | 28.7 µg/L | No recent samples | Not recorded |
| 2 | East Lake OsceolaClarke | 1.2 ft | 268.3 µg/L | 81.6 µg/L | No recent samples | Not recorded |
| Grade LakeClarke | No recent samples | No recent samples | No recent samples | No recent samples | Not 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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Source: the Iowa Department of Natural Resources. See data sources.