Lakes / California / Riverside County / Lake Mathews
Lake Mathews, California
2,146 acres
Surface Area
Where It Sits, and How Deep It Goes
Locator - California
33.84 degrees N, 117.44 degrees W - Riverside 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 Mathews Stacks Up
- Larger than 94% of the 1,147 lakes counted in California.
- About 48 miles from Los Angeles, as the crow flies.
Lakes Nearby
| Lake | County | Distance | Surface Area |
|---|---|---|---|
| Lee Lake | Riverside | 6.5 mi | 60 acres |
| Lake Norconian | Riverside | 9.6 mi | 49 acres |
| Lake Evans | Riverside | 11 mi | 32 acres |
| Prado Flood Control Basin | Riverside | 13 mi | 424 acres |
| Lake Elsinore | Riverside | 14 mi | 3,158 acres |
| Perris Reservoir | Riverside | 15 mi | 2,233 acres |
Straight-line distance between lake centers.
Facts and Figures
Questions About Lake Mathews
How Big Is Lake Mathews?
Lake Mathews covers 2,146 acres in Riverside County, California.
What Is the Largest Lake in Riverside County?
Diamond Valley Lake is the largest lake in Riverside County, at 4,918 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 27836424). Verified October 30, 2026.