Lakes / California / Shasta County / Tunnel Reservoir
Tunnel Reservoir, California
33 acres
Surface Area
Where It Sits, and How Deep It Goes
Locator - California
41.00 degrees N, 121.89 degrees W - Shasta 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 Tunnel Reservoir Stacks Up
- Larger than 14% of the 1,147 lakes counted in California.
- About 168 miles from Sacramento, as the crow flies.
Lakes Nearby
| Lake | County | Distance | Surface Area |
|---|---|---|---|
| Iron Canyon Reservoir | Shasta | 6.0 mi | 429 acres |
| Pit Six Reservoir | Shasta | 6.4 mi | 269 acres |
| Pit Four Reservoir | Shasta | 6.6 mi | 72 acres |
| Lake Margaret | Shasta | 8.8 mi | 104 acres |
| Pit 7 Reservoir | Shasta | 9.9 mi | 480 acres |
| Lake Britton | Shasta | 13 mi | 1,078 acres |
Straight-line distance between lake centers.
Facts and Figures
Questions About Tunnel Reservoir
How Big Is Tunnel Reservoir?
Tunnel Reservoir covers 33 acres in Shasta County, California.
What Is the Largest Lake in Shasta County?
Shasta Lake is the largest lake in Shasta County, at 12,416 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 83408728). Verified October 30, 2026.