Lakes / California / San Bernardino County / Copper Basin Reservoir
Copper Basin Reservoir, California
406 acres
Surface Area
Where It Sits, and How Deep It Goes
Locator - California
34.29 degrees N, 114.23 degrees W - San Bernardino 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 Copper Basin Reservoir Stacks Up
- Larger than 79% of the 1,147 lakes counted in California.
- About 201 miles from San Diego, as the crow flies.
Lakes Nearby
| Lake | County | Distance | Surface Area |
|---|---|---|---|
| Gene Wash Reservoir | San Bernardino | 3.4 mi | 178 acres |
Straight-line distance between lake centers.
Facts and Figures
Questions About Copper Basin Reservoir
How Big Is Copper Basin Reservoir?
Copper Basin Reservoir covers 406 acres in San Bernardino County, California.
What Is the Largest Lake in San Bernardino County?
Big Bear Lake is the largest lake in San Bernardino County, at 2,695 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 153299394). Verified October 30, 2026.