Lakes / Oregon / Lane County / Siltcoos Lake
Siltcoos Lake, Oregon
3,288 acres
Surface Area
Where It Sits, and How Deep It Goes
Locator - Oregon
43.88 degrees N, 124.09 degrees W - Lane 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 Siltcoos Lake Stacks Up
- Larger than 95% of the 642 lakes counted in Oregon.
- About 51 miles from Eugene, as the crow flies.
Lakes Nearby
| Lake | County | Distance | Surface Area |
|---|---|---|---|
| Woahink Lake | Lane | 2.8 mi | 784 acres |
| Carter Lake | Douglas | 3.3 mi | 29 acres |
| Cleawox Lake | Lane | 4.3 mi | 79 acres |
| Tahkenitch Lake | Douglas | 5.3 mi | 2,325 acres |
| Threemile Lake | Douglas | 8.6 mi | 69 acres |
| Munsel Lake | Lane | 9.1 mi | 105 acres |
Straight-line distance between lake centers.
Facts and Figures
Questions About Siltcoos Lake
How Big Is Siltcoos Lake?
Siltcoos Lake covers 3,288 acres in Lane County, Oregon.
What Is the Largest Lake in Lane County?
Fern Ridge Lake is the largest lake in Lane County, at 6,581 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 124284193). Verified October 30, 2026.