Loyalhanna Dam
High HazardNot Available ConditionEmergency Action Plan: Yes
Location
| State | Pennsylvania |
| County | Westmoreland |
| Nearest City | SALTSBURG |
| River/Stream | LOYALHANNA CREEK |
| Coordinates | 40.45684, -79.45148 |
Physical Characteristics
| Dam Type | Gravity |
| NID Height | 120 ft |
| Dam Length | 960 ft |
| Year Completed | 1942 (84 years old) |
Storage & Hydraulics
| NID Storage | 127,556 acre-ft |
| Max Storage | 127,556 acre-ft |
| Normal Storage | 2,000 acre-ft |
| Surface Area | 210 acres |
| Drainage Area | 290 sq mi |
| Max Discharge | 106,800 cfs |
| Spillway Type | Controlled |
Ownership & Safety
| Purpose | Flood Risk Reduction |
| Owner | USACE - Pittsburgh District |
| Owner Type | Federal |
| Hazard Classification | High |
| Condition Assessment | Not Available |
| Last Inspection | 01/13/2026 |
| Emergency Action Plan | Yes |