Lakes / Oregon / Douglas County / Threemile Lake
Threemile Lake, Oregon
69 acres
Surface Area
Where It Sits, and How Deep It Goes
Locator - Oregon
43.77 degrees N, 124.17 degrees W - Douglas 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 Threemile Lake Stacks Up
- Larger than 47% of the 642 lakes counted in Oregon.
- About 57 miles from Eugene, as the crow flies.
Lakes Nearby
| Lake | County | Distance | Surface Area |
|---|---|---|---|
| Tahkenitch Lake | Douglas | 3.7 mi | 2,325 acres |
| Carter Lake | Douglas | 6.1 mi | 29 acres |
| Clear Lake | Douglas | 8.4 mi | 310 acres |
| Siltcoos Lake | Lane | 8.6 mi | 3,288 acres |
| Lake Edna | Douglas | 9.2 mi | 35 acres |
| Eel Lake | Douglas | 11 mi | 347 acres |
Straight-line distance between lake centers.
Facts and Figures
Questions About Threemile Lake
How Big Is Threemile Lake?
Threemile Lake covers 69 acres in Douglas County, Oregon.
What Is the Largest Lake in Douglas County?
Diamond Lake is the largest lake in Douglas County, at 3,040 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 124284209). Verified October 30, 2026.