Hartford County Lake Quality
Connecticut, 10 lakes, measured by CT DEEP
Hartford County has 10 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. 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 Hartford 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 Batterson Park Pond.
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Quick Answers for Hartford County
Planning a trip? Check special fishing regulations for Batterson Park Pond — or check the official Connecticut fishing regulations.
All Lakes in Hartford County
10 lakes · 3 ranked on readings, 7 without enough sampling3 lakes ranked on readings · 7 without enough sampling, hidden
| # | Lake | Clarity | Phosphorus | Algae | Trophic | Access |
|---|---|---|---|---|---|---|
| 1 | Batterson Park PondHartford | No recent samples | 28 µg/L | 21.6 µg/L | No recent samples | ✓ Public |
| 2 | Lake TerramuggusHartford | No recent samples | 31 µg/L | 0.9 µg/L | No recent samples | Not recorded |
| 3 | Rainbow ReservoirHartford | No recent samples | 50 µg/L | No recent samples | No recent samples | Not recorded |
| Barber PondHartford | No recent samples | No recent samples | No recent samples | No recent samples | Not recorded | |
| Diamond LakeHartford | 6.6 ft | No recent samples | No recent samples | No recent samples | Not recorded | |
| Howells PondHartford | 4.7 ft | No recent samples | No recent samples | No recent samples | ✓ Public | |
| Manitook LakeHartford | 13.9 ft | No recent samples | No recent samples | No recent samples | Not recorded | |
| Rainbow PondHartford | 6.3 ft | No recent samples | No recent samples | No recent samples | ✓ Public | |
| Silver LakeHartford | 4.4 ft | No recent samples | No recent samples | No recent samples | Not recorded | |
| Whites PondHartford | No recent samples | 149.5 µg/L | 13.2 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.