Lakes / Oregon / Umatilla County / Langdon Lake
Langdon Lake, Oregon
49 acres
Surface Area
Where It Sits, and How Deep It Goes
Locator - Oregon
45.78 degrees N, 118.09 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 Langdon Lake Stacks Up
- Larger than 34% of the 642 lakes counted in Oregon.
- About 197 miles from Bend, as the crow flies.
Lakes Nearby
| Lake | County | Distance | Surface Area |
|---|---|---|---|
| Jubilee Lake | Union | 7.3 mi | 92 acres |
| Conley Lake | Union | 31 mi | 120 acres |
| Morgan Lake | Union | 33 mi | 60 acres |
| McKay Reservoir | Umatilla | 36 mi | 1,174 acres |
| Lostine Reservoir | Wallowa | 40 mi | 64 acres |
| La Grande Reservoir | Union | 45 mi | 33 acres |
Straight-line distance between lake centers.
Facts and Figures
Questions About Langdon Lake
How Big Is Langdon Lake?
Langdon Lake covers 49 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 109337349). Verified October 30, 2026.