Mercer County Lake Quality
Missouri, 4 lakes, measured by Missouri DNR
Mercer County holds 4 monitored lakes. With a sample that small the county-level summary describes those specific waters, not necessarily every water body in the county. 1 of those lake carry recent nutrient and algae readings. The county-level summary describes that subset, not every water body listed. Taken together, the monitored lakes of Mercer County sit near the low-nutrient end of the Missouri range.
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 Lake Marie.
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Quick Answers for Mercer County
Planning a trip? Check special fishing regulations for Lake Marie — or check the official Missouri fishing regulations.
All Lakes in Mercer County
4 lakes · 1 ranked on readings, 3 without enough sampling1 lake ranked on readings · 3 without enough sampling, hidden
| # | Lake | Clarity | Phosphorus | Algae | Trophic | Access |
|---|---|---|---|---|---|---|
| 1 | Lake MarieMercer | 7.8 ft | 13 µg/L | 2.7 µg/L | No recent samples | Not recorded |
| Lake PahoMercer | 2.2 ft | 37 µg/L | 48.2 µg/L | No recent samples | ✓ Public | |
| Twin LakeMercer | No recent samples | No recent samples | No recent samples | No recent samples | Not recorded | |
| Ballast Pit LakeMercer | 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 Missouri Department of Natural Resources. See data sources.