Lakes / Oregon / Columbia County / McNary Lake
McNary Lake, Oregon
214 acres
Surface Area
Where It Sits, and How Deep It Goes
Locator - Oregon
45.78 degrees N, 122.80 degrees W - Columbia 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 McNary Lake Stacks Up
- Larger than 73% of the 642 lakes counted in Oregon.
- About 19 miles from Portland, as the crow flies.
Lakes Nearby
| Lake | County | Distance | Surface Area |
|---|---|---|---|
| Aarons Lake | Columbia | 0.9 mi | 84 acres |
| Crane Lake | Columbia | 0.9 mi | 122 acres |
| Malarky Lake | Columbia | 2.0 mi | 33 acres |
| Seal Lake | Columbia | 2.0 mi | 25 acres |
| Racetrack Lake | Columbia | 2.2 mi | 29 acres |
| Cunningham Lake | Columbia | 2.4 mi | 157 acres |
Straight-line distance between lake centers.
Facts and Figures
Questions About McNary Lake
How Big Is McNary Lake?
McNary Lake covers 214 acres in Columbia County, Oregon.
What Is the Largest Lake in Columbia County?
Scappoose Bay is the largest lake in Columbia County, at 300 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 152897114). Verified October 30, 2026.