Hampden County Lake Quality
Massachusetts, 3 lakes, average grade B (Good)
Only 3 lakes in Hampden County carry an active grade. The county-level summary is therefore representative of those specific lakes, not necessarily of every water body in the county. With an average grade of B, Hampden County sits comfortably above the {{stateName}} median.
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. Vinica Pond (A) is the cleanest in the county.
Quick Answers for Hampden County
Planning a trip? Check special fishing regulations for Vinica Pond — or check the official Massachusetts fishing regulations.
All Lakes in Hampden County
| Rank | Lake | Grade | Clarity | Phosphorus |
|---|---|---|---|---|
| 1 | Vinica Pond | A | - | - |
| 2 | Hamilton Reservoir | A | - | - |
| 3 | Pequot Pond | D | - | - |
Other Counties in Massachusetts
See how Hampden County stacks up in the national county water-quality rankings, or browse the full directory of graded lakes across all 36 states.
Where to stay near Hampden County
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Source: EPA National Aquatic Resource Surveys, 2026.