Lakes / Oregon / Klamath County / Upper Klamath Lake
Upper Klamath Lake, Oregon
62,095 acres
Surface Area
Where It Sits, and How Deep It Goes
Locator - Oregon
42.40 degrees N, 121.92 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 Upper Klamath Lake Stacks Up
- The largest lake counted in Oregon by surface area - 62,095 acres.
- The largest lake in Klamath County among those counted.
- About 49 miles from Medford, as the crow flies.
Lakes Nearby
| Lake | County | Distance | Surface Area |
|---|---|---|---|
| Aspen Lake | Klamath | 9.1 mi | 3,564 acres |
| Agency Lake | Klamath | 9.8 mi | 10,319 acres |
| Lake Harriette | Klamath | 9.9 mi | 36 acres |
| Whiteline Reservoir | Klamath | 10 mi | 288 acres |
| Lake Ewauna | Klamath | 15 mi | 371 acres |
| Lake of the Woods | Klamath | 15 mi | 1,228 acres |
Straight-line distance between lake centers.
Facts and Figures
Questions About Upper Klamath Lake
How Big Is Upper Klamath Lake?
Upper Klamath Lake covers 62,095 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 168095445). Verified October 30, 2026.