Warren County Lake Quality
Iowa, 3 lakes, measured by Iowa DNR
Warren 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. 1 of those lake carry recent nutrient and algae readings. The county-level summary describes that subset, not every water body listed. Most monitored lakes in Warren County are productive, shallow basins; each lake page shows its own phosphorus and chlorophyll-a readings beside the EPA condition class.
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 Hooper Pond Lake.
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Quick Answers for Warren County
Planning a trip? Check special fishing regulations for Hooper Pond Lake — or check the official Iowa fishing regulations.
All Lakes in Warren County
3 lakes · 1 ranked on readings, 2 without enough sampling1 lake ranked on readings · 2 without enough sampling, hidden
| # | Lake | Clarity | Phosphorus | Algae | Trophic | Access |
|---|---|---|---|---|---|---|
| 1 | Hooper Pond LakeWarren | 2.5 ft | 61 µg/L | 25.1 µg/L | No recent samples | ✓ Public |
| Lake Ahquabi BeachWarren | No recent samples | No recent samples | No recent samples | No recent samples | Not recorded | |
| Lake ColechesterWarren | 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.