Westchester County Lake Quality
New York, 6 lakes, average grade D (Poor)
Westchester County has 6 graded 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. On average, Westchester County lakes grade D, with phosphorus loading and reduced clarity showing up across most of the dataset.
The county's lakes lean shallow, which makes the grades sensitive to wind, sediment-resuspension, and any nutrient inputs from the watershed. The cleanest lake on the books is Oscaleta Lake (C); the most-stressed is Lake Lincolndale (F).
Quick Answers for Westchester County
Planning a trip? Check special fishing regulations for Oscaleta Lake — or check the official New York fishing regulations.
All Lakes in Westchester County
| Rank | Lake | Grade | Clarity | Phosphorus |
|---|---|---|---|---|
| 1 | Oscaleta Lake | C | 8.4 ft | - |
| 2 | Lake Mohegan | D | 3.4 ft | - |
| 3 | Lake Rippowam | D | 5.4 ft | - |
| 4 | Lake Waccabuc | D | 5.7 ft | - |
| 5 | Lake Lincolndale | F | 2.8 ft | - |
| 6 | Howlands Lake | F | 3.1 ft | - |
Other Counties in New York
See how Westchester County stacks up in the national county water-quality rankings, or browse the full directory of graded lakes across all 15 states.
Where to stay near Westchester County
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Source: EPA National Aquatic Resource Surveys, 2026.