Lakes / Oregon / Marion County / Mission Lake
Mission Lake, Oregon
29 acres
Surface Area
Where It Sits, and How Deep It Goes
Locator - Oregon
45.08 degrees N, 123.05 degrees W - Marion 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 Mission Lake Stacks Up
- Larger than 9% of the 642 lakes counted in Oregon.
- About 10 miles from Salem, as the crow flies.
Lakes Nearby
| Lake | County | Distance | Surface Area |
|---|---|---|---|
| Clear Lake | Marion | 3.5 mi | 37 acres |
| Lambert Slough | Yamhill | 4.4 mi | 117 acres |
| Horseshoe Lake | Marion | 8.9 mi | 27 acres |
| Willamette Slough | Marion | 10 mi | 55 acres |
| McKay Reservoir | Marion | 10 mi | 28 acres |
| Mission Creek Reservoir | Marion | 11 mi | 59 acres |
Straight-line distance between lake centers.
Facts and Figures
Questions About Mission Lake
How Big Is Mission Lake?
Mission Lake covers 29 acres in Marion County, Oregon.
What Is the Largest Lake in Marion County?
Detroit Lake is the largest lake in Marion County, at 3,593 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 147815706). Verified October 30, 2026.