Lakes / California / Colusa County
Lakes in Colusa County, California
3 lakes counted in Colusa County - the largest is East Park Reservoir at 1,334 acres.
3
Lakes Counted
1,334 acres
Largest - East Park Reservoir
Colusa County, highlighted, with its largest counted lakes dotted. Outlines from Census boundary data.
All Counted Lakes
| # | Lake | County | Surface Area | Max Depth |
|---|---|---|---|---|
| 1 | East Park Reservoir | Colusa | 1,334 acres | - |
| 2 | Upper Letts Lake | Colusa | 34 acres | - |
| 3 | Powell Slough | Colusa | 27 acres | - |
Sources: USGS National Hydrography Dataset lake data; USGS. Verified October 30, 2026.