Lakes / Georgia / Forsyth County
Lakes in Forsyth County, Georgia
4 lakes counted in Forsyth County - the largest is Lake Sidney Lanier at 38,293 acres.
4
Lakes Counted
38,293 acres
Largest - Lake Sidney Lanier
Forsyth County, highlighted, with its largest counted lakes dotted. Outlines from Census boundary data.
All Counted Lakes
| # | Lake | County | Surface Area | Max Depth |
|---|---|---|---|---|
| 1 | Lake Sidney Lanier | Forsyth | 38,293 acres | - |
| 2 | Twin Lakes | Forsyth | 37 acres | - |
| 3 | Reservoir 21 | Forsyth | 32 acres | - |
| 4 | Reservoir Number One | Forsyth | 30 acres | - |
Sources: USGS National Hydrography Dataset lake data; USGS. Verified October 30, 2026.