Lakes / Oregon / Umatilla County / McKay Reservoir
McKay Reservoir, Umatilla County, Oregon
1,174 acres
Surface Area
Where It Sits, and How Deep It Goes
Locator - Oregon
45.59 degrees N, 118.78 degrees W - Umatilla 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 McKay Reservoir Stacks Up
- Larger than 91% of the 642 lakes counted in Oregon.
- About 163 miles from Bend, as the crow flies.
Lakes Nearby
| Lake | County | Distance | Surface Area |
|---|---|---|---|
| Cold Springs Reservoir | Umatilla | 26 mi | 1,440 acres |
| Langdon Lake | Umatilla | 36 mi | 49 acres |
| Morgan Lake | Union | 37 mi | 60 acres |
| Willow Creek Reservoir | Morrow | 40 mi | 154 acres |
| Lake Penland | Morrow | 41 mi | 62 acres |
| La Grande Reservoir | Union | 42 mi | 33 acres |
Straight-line distance between lake centers.
Facts and Figures
Questions About McKay Reservoir
How Big Is McKay Reservoir?
McKay Reservoir covers 1,174 acres in Umatilla County, Oregon.
What Is the Largest Lake in Umatilla County?
Cold Springs Reservoir is the largest lake in Umatilla County, at 1,440 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 145369434). Verified October 30, 2026.