Union County Lake Quality
Indiana, 2 lakes, measured by IDEM
Union County has 2 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. The county's readings sit in the middle of the Indiana range, with one or two lakes pulling the average up or down depending on year.
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 Brookville Lake.
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Quick Answers for Union County
Planning a trip? Check special fishing regulations for Brookville Lake — or check the official Indiana fishing regulations.
All Lakes in Union County
2 lakes · 1 ranked on readings, 1 without enough sampling1 lake ranked on readings · 1 without enough sampling, hidden
| # | Lake | Clarity | Phosphorus | Algae | Trophic | Max Depth | Access |
|---|---|---|---|---|---|---|---|
| 1 | Brookville LakeUnion | No recent samples | 49 µg/L | 5.4 µg/L | No recent samples | No recent samples | ✓ Public |
| Whitewater LakeUnion | No recent samples | 88.8 µg/L | 34.4 µg/L | No recent samples | 45.9 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 Indiana Department of Environmental Management. See data sources.