Lakes / Pennsylvania / Armstrong County
Lakes in Armstrong County, Pennsylvania
2 lakes counted in Armstrong County - the largest is Keystone Lake at 950 acres.
2
Lakes Counted
950 acres
Largest - Keystone Lake
Armstrong County, highlighted, with its largest counted lakes dotted. Outlines from Census boundary data.
All Counted Lakes
| # | Lake | County | Surface Area | Max Depth |
|---|---|---|---|---|
| 1 | Keystone Lake | Armstrong | 950 acres | None |
| 2 | Crooked Creek Lake | Armstrong | 350 acres | None |
Sources: Pennsylvania Fish and Boat Commission lake data; USGS. Verified October 28, 2026.