Lakes / California / Siskiyou County / Lower Klamath Lake Sump
Lower Klamath Lake Sump, Siskiyou County, California
848 acres
Surface Area
Where It Sits, and How Deep It Goes
Locator - California
41.91 degrees N, 121.66 degrees W - Siskiyou 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 Lower Klamath Lake Sump Stacks Up
- Larger than 88% of the 1,147 lakes counted in California.
- About 230 miles from Sacramento, as the crow flies.
Lakes Nearby
| Lake | County | Distance | Surface Area |
|---|---|---|---|
| Lower Klamath Lake Sump | Siskiyou | 2.0 mi | 1,952 acres |
| Lower Klamath Lake | Siskiyou | 4.6 mi | 231 acres |
| Lower Klamath Lake | Siskiyou | 6.8 mi | 1,337 acres |
| Tule Lake | Siskiyou | 6.9 mi | 7,403 acres |
| Souza Lake | Siskiyou | 7.8 mi | 37 acres |
| Tule Lake | Siskiyou | 8.1 mi | 32 acres |
Straight-line distance between lake centers.
Facts and Figures
Waterbody ID{0687CEE8-6F3D-40D7-A681-2FB32C361ABA}
CountySiskiyou
Lake TypeLake
Coordinates41.9064, -121.6645
Questions About Lower Klamath Lake Sump
How Big Is Lower Klamath Lake Sump?
Lower Klamath Lake Sump covers 848 acres in Siskiyou County, California.
What Is the Largest Lake in Siskiyou County?
Tule Lake is the largest lake in Siskiyou County, at 7,403 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 {0687CEE8-6F3D-40D7-A681-2FB32C361ABA}). Verified October 30, 2026.