Lakes / Oregon / Lincoln County / Olalla Reservoir
Olalla Reservoir, Oregon
103 acres
Surface Area
Where It Sits, and How Deep It Goes
Locator - Oregon
44.69 degrees N, 123.93 degrees W - Lincoln 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 Olalla Reservoir Stacks Up
- Larger than 58% of the 642 lakes counted in Oregon.
- About 47 miles from Salem, as the crow flies.
Lakes Nearby
| Lake | County | Distance | Surface Area |
|---|---|---|---|
| Newport Reservoir | Lincoln | 5.3 mi | 29 acres |
| Thompson Lake | Benton | 19 mi | 29 acres |
| Eckman Lake | Lincoln | 20 mi | 58 acres |
| Devils Lake | Lincoln | 21 mi | 673 acres |
| Aaron Mercer Reservoir | Polk | 27 mi | 55 acres |
| Clemens Log Pond | Benton | 30 mi | 84 acres |
Straight-line distance between lake centers.
Facts and Figures
Questions About Olalla Reservoir
How Big Is Olalla Reservoir?
Olalla Reservoir covers 103 acres in Lincoln County, Oregon.
What Is the Largest Lake in Lincoln County?
Devils Lake is the largest lake in Lincoln County, at 673 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 107964787). Verified October 30, 2026.