Loyalhanna Dam
Pennsylvania — Westmoreland County — LOYALHANNA CREEK
Location
| State | Pennsylvania |
| County | Westmoreland |
| River | LOYALHANNA CREEK |
| Coordinates | 40.45684, -79.45148 |
Physical Characteristics
| NID Height | 120 ft |
| Dam Height | — |
| Dam Length | 960 ft |
| NID Storage | 127,556 acre-ft |
| Max Storage | 127,556 acre-ft |
| Surface Area | 210 acres |
Safety Classification
| Hazard Potential | High |
| Condition Assessment | Not Available |
| EAP Status | Yes |
| Last Inspection | January 13, 2026 |
| Inspection Frequency | 5 |
Dam Information
| Year Completed | 1942 |
| Primary Purpose | Flood Risk Reduction |
| Dam Type | Gravity |
| Owner Type | Federal |
| Owner | USACE - Pittsburgh District |
| Other Name | Loyalhanna Lake |
Location Map
About This Dam Record
Dam safety data is maintained by the Army Corps of Engineers National Inventory of Dams (NID). High-hazard dams are those where failure could cause loss of life or major property damage downstream.