Lakes / California / Santa Barbara County / Lake Cachuma
Lake Cachuma, California
2,584 acres
Surface Area
Where It Sits, and How Deep It Goes
Locator - California
34.58 degrees N, 119.94 degrees W - Santa Barbara County. State and county outlines drawn from Census boundary data; the lake marker is placed by its USGS National Hydrography Dataset coordinates, not by eye. Schematic - not a survey map.
How Lake Cachuma Stacks Up
- Larger than 95% of the 1,147 lakes counted in California.
- The largest lake in Santa Barbara County among those counted.
- About 104 miles from Los Angeles, as the crow flies.
Lakes Nearby
| Lake | County | Distance | Surface Area |
|---|---|---|---|
| Devereux Lagoon | Santa Barbara | 12 mi | 39 acres |
| Gibraltar Reservoir | Santa Barbara | 16 mi | 207 acres |
| Jameson Lake | Santa Barbara | 26 mi | 123 acres |
| Twitchell Reservoir | Santa Barbara | 36 mi | 156 acres |
| Matilija Lake | Ventura | 37 mi | 30 acres |
| Lake Casitas | Ventura | 37 mi | 1,540 acres |
Straight-line distance between lake centers.
Facts and Figures
Questions About Lake Cachuma
How Big Is Lake Cachuma?
Lake Cachuma covers 2,584 acres in Santa Barbara County, California.
What Is the Largest Lake in Santa Barbara County?
Lake Cachuma is the largest lake in Santa Barbara County, at 2,584 acres.
Largest Lakes in California
| # | Lake | County | Surface Area | Max Depth |
|---|---|---|---|---|
| 1 | Salton Sea | Imperial | 233,096 acres | - |
| 2 | Lake Tahoe | Placer | 122,975 acres | - |
| 3 | Goose Lake | Modoc | 93,048 acres | - |
| 4 | Honey Lake | Lassen | 59,917 acres | - |
| 5 | Mono Lake | Mono | 45,124 acres | - |
All 1,147 California lakes ranked by surface area
Sources: USGS NHD (The National Map NHD MapServer layer 12) named waterbodies FTYPE 390/436; counties via Census point-in-polygon lake data (ID 120025172). Verified October 30, 2026.