Lakes / California / Santa Barbara County / Twitchell Reservoir
Twitchell Reservoir, California
156 acres
Surface Area
Where It Sits, and How Deep It Goes
Locator - California
34.99 degrees N, 120.33 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 Twitchell Reservoir Stacks Up
- Larger than 64% of the 1,147 lakes counted in California.
- About 125 miles from Fresno, as the crow flies.
Lakes Nearby
| Lake | County | Distance | Surface Area |
|---|---|---|---|
| Guadalupe Lake | Santa Barbara | 12 mi | 25 acres |
| Lopez Lake | San Luis Obispo | 17 mi | 586 acres |
| White Lake | San Luis Obispo | 17 mi | 45 acres |
| Oso Flaco Lake | San Luis Obispo | 17 mi | 40 acres |
| Lopez Reservoir | San Luis Obispo | 17 mi | 29 acres |
| Santa Margarita Lake | San Luis Obispo | 25 mi | 146 acres |
Straight-line distance between lake centers.
Facts and Figures
Waterbody ID{D7AD2A4A-FE51-4BA7-A42C-8273DAB084A5}
CountySanta Barbara
Lake TypeLake
Coordinates34.9885, -120.3284
Questions About Twitchell Reservoir
How Big Is Twitchell Reservoir?
Twitchell Reservoir covers 156 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 {D7AD2A4A-FE51-4BA7-A42C-8273DAB084A5}). Verified October 30, 2026.