Lakes / California / Lassen County / Poison Lake
Poison Lake, California
533 acres
Surface Area
Where It Sits, and How Deep It Goes
Locator - California
40.66 degrees N, 121.20 degrees W - Lassen 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 Poison Lake Stacks Up
- Larger than 82% of the 1,147 lakes counted in California.
- About 145 miles from Sacramento, as the crow flies.
Lakes Nearby
| Lake | County | Distance | Surface Area |
|---|---|---|---|
| Crater Lake | Lassen | 8.4 mi | 28 acres |
| Butte Lake | Lassen | 8.4 mi | 208 acres |
| Bear Lake | Lassen | 8.9 mi | 38 acres |
| Bear Valley Reservoir | Lassen | 9.2 mi | 110 acres |
| Widow Lake | Lassen | 9.2 mi | 29 acres |
| Triangle Lake | Lassen | 9.3 mi | 50 acres |
Straight-line distance between lake centers.
Facts and Figures
Waterbody ID{612F09AE-22A7-49CD-8525-E75AB5CCDE77}
CountyLassen
Lake TypeLake
Coordinates40.6613, -121.2003
Questions About Poison Lake
How Big Is Poison Lake?
Poison Lake covers 533 acres in Lassen County, California.
What Is the Largest Lake in Lassen County?
Honey Lake is the largest lake in Lassen County, at 59,917 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 {612F09AE-22A7-49CD-8525-E75AB5CCDE77}). Verified October 30, 2026.