Lakes / New York / Ontario County
Lakes in Ontario County, New York
8 lakes counted in Ontario County - the largest is Seneca Lake at 43,343 acres.
8
Lakes Counted
43,343 acres
Largest - Seneca Lake
618 ft
Deepest - Seneca Lake
Ontario County, highlighted, with its largest counted lakes dotted. Outlines from Census boundary data.
All Counted Lakes
| # | Lake | County | Surface Area | Max Depth |
|---|---|---|---|---|
| 1 | Seneca Lake | Ontario, Yates, Seneca, Schuyler | 43,343 acres | 618 ft |
| 2 | Canandaigua Lake | Ontario, Yates | 10,558 acres | 276 ft |
| 3 | Hemlock Lake | Livingston, Ontario | 1,800 acres | 91 ft |
| 4 | Honeoye Lake | Ontario | 1,772 acres | 30 ft |
| 5 | Canadice Lake | Ontario | 649 acres | 95 ft |
| 6 | Newark Reservoir | Ontario | 98 acres | - |
| 7 | Burnett Pond | Ontario | 48 acres | - |
| 8 | Fairport Reservoirs | Ontario | 26 acres | - |
Sources: New York State DEC lake data; USGS. Verified October 30, 2026.