Lakes / Oregon / Washington County / Henry Hagg Lake
Henry Hagg Lake, Oregon
1,086 acres
Surface Area
Where It Sits, and How Deep It Goes
Locator - Oregon
45.48 degrees N, 123.22 degrees W - Washington 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 Henry Hagg Lake Stacks Up
- Larger than 90% of the 642 lakes counted in Oregon.
- The largest lake in Washington County among those counted.
- About 26 miles from Portland, as the crow flies.
Lakes Nearby
| Lake | County | Distance | Surface Area |
|---|---|---|---|
| Stimson Millpond | Washington | 2.0 mi | 46 acres |
| Barney Reservoir | Washington | 8.5 mi | 342 acres |
| McGuire Reservoir | Yamhill | 15 mi | 181 acres |
| Skookum Lakes | Marion | 20 mi | 29 acres |
| Horseshoe Lake | Marion | 21 mi | 27 acres |
| Mission Creek Reservoir | Marion | 22 mi | 59 acres |
Straight-line distance between lake centers.
Facts and Figures
Questions About Henry Hagg Lake
How Big Is Henry Hagg Lake?
Henry Hagg Lake covers 1,086 acres in Washington County, Oregon.
What Is the Largest Lake in Washington County?
Henry Hagg Lake is the largest lake in Washington County, at 1,086 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 142403732). Verified October 30, 2026.