Lakes / California / Ventura County
Lakes in Ventura County, California
5 lakes counted in Ventura County - the largest is Lake Casitas at 1,540 acres.
5
Lakes Counted
1,540 acres
Largest - Lake Casitas
Ventura County, highlighted, with its largest counted lakes dotted. Outlines from Census boundary data.
All Counted Lakes
| # | Lake | County | Surface Area | Max Depth |
|---|---|---|---|---|
| 1 | Lake Casitas | Ventura | 1,540 acres | - |
| 2 | Lake Piru | Ventura | 1,066 acres | - |
| 3 | Wood Ranch Reservoir | Ventura | 217 acres | - |
| 4 | Lake Sherwood | Ventura | 138 acres | - |
| 5 | Matilija Lake | Ventura | 30 acres | - |
Sources: USGS National Hydrography Dataset lake data; USGS. Verified October 30, 2026.