Alder Lake, New York
45 acres
Surface Area
22 ft
Max Depth
9 ft
Average Depth
1.3 mi
Shoreline
2,182 ft
Surface Elevation
Where It Sits, and How Deep It Goes
Locator - New York
42.05 degrees N, 74.68 degrees W - Ulster County. State and county outlines drawn from Census boundary data; the lake marker is placed by its New York State DEC coordinates, not by eye. Schematic - not a survey map.
Depth Profile - Alder Lake
Schematic cross-section drawn to one shared depth scale - not a survey or bathymetric map.
How Alder Lake Stacks Up
- About 63 miles from Albany, as the crow flies.
- 1 fish species on the DEC list for this lake.
Fish Species
Brook Trout
Species recorded for this lake. Presence only - no abundance ratings.
Facts and Figures
Waterbody ID25528870
CountyUlster
Coordinates42.0489, -74.6763
Deepest Natural Lakes in New York
| # | Lake | County | Surface Area | Max Depth |
|---|---|---|---|---|
| 1 | Seneca Lake | Ontario, Yates, Seneca, Schuyler | 43,343 acres | 618 ft |
| 2 | Cayuga Lake | Cayuga | 42,956 acres | 435 ft |
| 3 | Skaneateles Lake | Onondaga, Cortland, Cayuga | 8,960 acres | 300 ft |
| 4 | Canandaigua Lake | Ontario, Yates | 10,558 acres | 276 ft |
| 5 | Lake George | Essex, Warren | 28,451 acres | 187 ft |
Largest Lakes in New York
| # | Lake | County | Surface Area | Max Depth |
|---|---|---|---|---|
| 1 | Lake Erie | Erie | 6,360,010 acres | - |
| 2 | Lake Ontario | Jefferson | 4,656,925 acres | - |
| 3 | Lake Champlain | Washington | 277,117 acres | - |
| 4 | Oneida Lake | Oswego | 51,324 acres | - |
| 5 | Seneca Lake | Ontario, Yates, Seneca, Schuyler | 43,343 acres | 618 ft |
Sources: New York State DEC lake data (ID 25528870); USGS. Verified October 30, 2026.