| Loyalhanna Lake | |
| Subdivision Type1: | State |
| Subdivision Name1: | Pennsylvania |
| Subdivision Type2: | County |
| Subdivision Name2: | Westmoreland |
| Subdivision Type3: | Township |
| Subdivision Name3: | Loyalhanna |
| Mouth Coordinates: | 40.4567°N -79.4517°W |
| Mouth Elevation: | 919feet |
| River System: | Allegheny River |
| Custom Label: | GNIS Identifier |
| Custom Data: | 1180051 |
Loyalhanna Lake is a reservoir of about 480 acres on Loyalhanna Creek located in Loyalhanna Township, Westmoreland County near Saltsburg.[1] The U.S. Army Corps of Engineers operates the dam that forms the lake.