Lakes / California / Colusa County / Upper Letts Lake
Upper Letts Lake, California
34 acres
Surface Area
Where It Sits, and How Deep It Goes
Locator - California
39.31 degrees N, 122.71 degrees W - Colusa 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 Upper Letts Lake Stacks Up
- Larger than 16% of the 1,147 lakes counted in California.
- About 82 miles from Sacramento, as the crow flies.
Lakes Nearby
| Lake | County | Distance | Surface Area |
|---|---|---|---|
| East Park Reservoir | Colusa | 11 mi | 1,334 acres |
| Lake Pillsbury | Lake | 15 mi | 1,947 acres |
| Indian Valley Reservoir | Lake | 16 mi | 3,263 acres |
| Lower Blue Lake | Lake | 18 mi | 52 acres |
| Blue Lakes | Lake | 19 mi | 106 acres |
| Clear Lake | Lake | 19 mi | 39,651 acres |
Straight-line distance between lake centers.
Facts and Figures
Questions About Upper Letts Lake
How Big Is Upper Letts Lake?
Upper Letts Lake covers 34 acres in Colusa County, California.
What Is the Largest Lake in Colusa County?
East Park Reservoir is the largest lake in Colusa County, at 1,334 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 114913113). Verified October 30, 2026.