Keystone Lake (Armstrong County, Pennsylvania)
| Keystone Lake | |
|---|---|
| Location | Armstrong County, Pennsylvania, U.S. state |
| Coordinates | 40°45′02″N 79°17′09″W / 40.750557°N 79.285899°W |
| Type | reservoir |
| Basin countries | United States |
| Surface area | 120 acres (49 ha) |
| Surface elevation | 1,076 feet (328 m) |
Keystone Lake (also known as Keystone Reservoir and Plum Creek Reservoir) is a reservoir in Armstrong County in the U.S. state of Pennsylvania. The elevation of Keystone Lake is 1,076 feet (328 m) above sea level.