Maxwell Locks and Dam
Pennsylvania — Washington County — MONONGAHELA RIVER
Location
| State | Pennsylvania |
| County | Washington |
| River | MONONGAHELA RIVER |
| Coordinates | 40.00227, -79.95964 |
Physical Characteristics
| NID Height | 56 ft |
| Dam Height | — |
| Dam Length | 692 ft |
| NID Storage | 30,900 acre-ft |
| Max Storage | 30,900 acre-ft |
| Surface Area | 1,380 acres |
Safety Classification
| Hazard Potential | Significant |
| Condition Assessment | Not Available |
| EAP Status | Yes |
| Last Inspection | August 27, 2025 |
| Inspection Frequency | 5 |
Dam Information
| Year Completed | 1964 |
| Primary Purpose | Navigation |
| Dam Type | Gravity |
| Owner Type | Federal |
| Owner | USACE - Pittsburgh District |
| Other Name | Maxwell Pool |
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.