New Haven County Lake Quality
Connecticut, 6 lakes, measured by CT DEEP
New Haven County holds 6 monitored lakes. With a sample that small the county-level summary describes those specific waters, not necessarily every water body in the county. 2 of those lakes carry recent nutrient and algae readings. The county-level summary describes that subset, not every water body listed. Most monitored lakes in New Haven County carry favourable nutrient and algae readings for Connecticut.
Most of the county's monitored lakes are shallow, under 50 feet, which means wind keeps the water column mixed all summer and sediment-bound phosphorus releases back into the surface layer whenever the bottom is disturbed. Lake Quassapaug has the lowest nutrient and algae readings in the county.
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Quick Answers for New Haven County
Planning a trip? Check special fishing regulations for Lake Quassapaug — or check the official Connecticut fishing regulations.
All Lakes in New Haven County
6 lakes · 2 ranked on readings, 4 without enough sampling2 lakes ranked on readings · 4 without enough sampling, hidden
| # | Lake | Clarity | Phosphorus | Algae | Trophic | Access |
|---|---|---|---|---|---|---|
| 1 | Lake QuassapaugNew Haven | No recent samples | 15.5 µg/L | 2.9 µg/L | No recent samples | Not recorded |
| 2 | Quonnipaug LakeNew Haven | No recent samples | 22 µg/L | 2.7 µg/L | No recent samples | ✓ Public |
| Hitchcock LakeNew Haven | 4.8 ft | No recent samples | No recent samples | No recent samples | Not recorded | |
| North Farms ReservoirNew Haven | 6.6 ft | No recent samples | No recent samples | No recent samples | ✓ Public | |
| Tracys PondNew Haven | 2 ft | No recent samples | No recent samples | No recent samples | Not recorded | |
| West LakeNew Haven | 5.2 ft | 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 Connecticut Department of Energy and Environmental Protection. See data sources.