Lakes / Oregon / Klamath County / Lost Lake
Lost Lake, Klamath County, Oregon
29 acres
Surface Area
Where It Sits, and How Deep It Goes
Locator - Oregon
42.09 degrees N, 120.90 degrees W - Klamath 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 Lost Lake Stacks Up
- Larger than 9% of the 642 lakes counted in Oregon.
- About 102 miles from Medford, as the crow flies.
Lakes Nearby
| Lake | County | Distance | Surface Area |
|---|---|---|---|
| Strawberry Reservoir | Lake | 2.8 mi | 233 acres |
| Tull Reservoir | Klamath | 4.1 mi | 40 acres |
| South Arm Reservoir | Lake | 5.0 mi | 103 acres |
| Grohs Reservoir | Klamath | 5.9 mi | 85 acres |
| Albertson Reservoir | Lake | 5.9 mi | 97 acres |
| Upper Midway Reservoir | Klamath | 6.4 mi | 49 acres |
Straight-line distance between lake centers.
Facts and Figures
Questions About Lost Lake
How Big Is Lost Lake?
Lost Lake covers 29 acres in Klamath County, Oregon.
What Is the Largest Lake in Klamath County?
Upper Klamath Lake is the largest lake in Klamath County, at 62,095 acres.
Largest Lakes in Oregon
| # | Lake | County | Surface Area | Max Depth |
|---|---|---|---|---|
| 1 | Upper Klamath Lake | Klamath | 62,095 acres | - |
| 2 | Lake Umatilla | Morrow | 50,042 acres | - |
| 3 | Lake Abert | Lake | 37,137 acres | - |
| 4 | Summer Lake | Lake | 31,602 acres | - |
| 5 | Harney Lake | Harney | 31,290 acres | - |
All 642 Oregon 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 82757409). Verified October 30, 2026.