Lakes / New Jersey / Mercer County
Lakes in Mercer County, New Jersey
7 lakes counted in Mercer County - the largest is Mercer County Lake at 290.09 acres.
7
Lakes Counted
290.09 acres
Largest - Mercer County Lake
Mercer County, highlighted, with its largest counted lakes dotted. Outlines from Census boundary data.
All Counted Lakes
| # | Lake | County | Surface Area | Max Depth |
|---|---|---|---|---|
| 1 | Mercer County Lake | Mercer | 290.09 acres | - |
| 2 | Carnegie Lake | Mercer | 243.89 acres | - |
| 3 | Spring Lake | Mercer | 62.02 acres | - |
| 4 | Plainsboro Pond | Mercer | 37.56 acres | - |
| 5 | Grovers Mill Pond | Mercer | 31.14 acres | - |
| 6 | Gropp Lake | Mercer | 30.64 acres | - |
| 7 | Rosedale Lake | Mercer | 29.87 acres | - |
Sources: USGS National Hydrography Dataset lake data; USGS. Verified October 30, 2026.