Lakes / California / Trinity County / Ewing Reservoir
Ewing Reservoir, California
41 acres
Surface Area
Where It Sits, and How Deep It Goes
Locator - California
40.57 degrees N, 123.17 degrees W - Trinity 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 Ewing Reservoir Stacks Up
- Larger than 25% of the 1,147 lakes counted in California.
- About 163 miles from Sacramento, as the crow flies.
Lakes Nearby
| Lake | County | Distance | Surface Area |
|---|---|---|---|
| Ruth Lake | Trinity | 20 mi | 1,075 acres |
| Lewiston Lake | Trinity | 23 mi | 674 acres |
| Rainbow Lake | Shasta | 25 mi | 92 acres |
| Papoose Lake | Trinity | 29 mi | 28 acres |
| Sapphire Lake | Trinity | 31 mi | 48 acres |
| Granite Lake | Trinity | 31 mi | 25 acres |
Straight-line distance between lake centers.
Facts and Figures
Questions About Ewing Reservoir
How Big Is Ewing Reservoir?
Ewing Reservoir covers 41 acres in Trinity County, California.
What Is the Largest Lake in Trinity County?
Trinity Lake is the largest lake in Trinity County, at 15,587 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 108018885). Verified October 30, 2026.