Lakes / California / San Diego County / Sweetwater Reservoir
Sweetwater Reservoir, California
689 acres
Surface Area
Where It Sits, and How Deep It Goes
Locator - California
32.70 degrees N, 116.99 degrees W - San Diego 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 Sweetwater Reservoir Stacks Up
- Larger than 85% of the 1,147 lakes counted in California.
- About 10 miles from San Diego, as the crow flies.
Lakes Nearby
| Lake | County | Distance | Surface Area |
|---|---|---|---|
| Upper Otay Lake | San Diego | 4.5 mi | 30 acres |
| Lower Otay Lake | San Diego | 6.2 mi | 1,015 acres |
| Murray Reservoir | San Diego | 6.9 mi | 140 acres |
| Lake Jennings | San Diego | 13 mi | 158 acres |
| Loveland Reservoir | San Diego | 14 mi | 368 acres |
| Lake Miramar | San Diego | 16 mi | 145 acres |
Straight-line distance between lake centers.
Facts and Figures
Questions About Sweetwater Reservoir
How Big Is Sweetwater Reservoir?
Sweetwater Reservoir covers 689 acres in San Diego County, California.
What Is the Largest Lake in San Diego County?
Lake Henshaw is the largest lake in San Diego County, at 1,754 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 120025152). Verified October 30, 2026.