Windham County Lake Quality
Connecticut, 7 lakes, measured by CT DEEP
Windham County holds 7 monitored lakes. With a sample that small the county-level summary describes those specific waters, not necessarily every water body in the county. 3 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 Windham 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 Alexander Lake.
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Quick Answers for Windham County
Planning a trip? Check special fishing regulations for Alexander Lake — or check the official Connecticut fishing regulations.
All Lakes in Windham County
7 lakes · 3 ranked on readings, 4 without enough sampling3 lakes ranked on readings · 4 without enough sampling, hidden
| # | Lake | Clarity | Phosphorus | Algae | Trophic | Access |
|---|---|---|---|---|---|---|
| 1 | Alexander LakeWindham | No recent samples | 27 µg/L | 0.9 µg/L | No recent samples | Not recorded |
| 2 | Roseland LakeWindham | No recent samples | 66 µg/L | 41.8 µg/L | No recent samples | Not recorded |
| 3 | West Thompson LakeWindham | 5.3 ft | 22 µg/L | 8.5 µg/L | No recent samples | Not recorded |
| Ashford LakeWindham | 5 ft | No recent samples | No recent samples | No recent samples | Not recorded | |
| Black PondWindham | 16.6 ft | No recent samples | No recent samples | No recent samples | ✓ Public | |
| Halls PondWindham | 8.1 ft | No recent samples | No recent samples | No recent samples | Not recorded | |
| Lake ChaffeeWindham | No recent samples | 23 µg/L | 3.7 µg/L | 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 Connecticut Department of Energy and Environmental Protection. See data sources.