Maxwell Locks And Dam
Significant HazardNot Available ConditionEmergency Action Plan: Yes
Location
| State | Pennsylvania |
| County | Washington |
| Nearest City | BROWNSVILLE |
| River/Stream | MONONGAHELA RIVER |
| Coordinates | 40.00227, -79.95964 |
Physical Characteristics
| Dam Type | Gravity |
| NID Height | 56 ft |
| Dam Length | 692 ft |
| Year Completed | 1964 (62 years old) |
Storage & Hydraulics
| NID Storage | 30,900 acre-ft |
| Max Storage | 30,900 acre-ft |
| Normal Storage | 30,900 acre-ft |
| Surface Area | 1,380 acres |
| Drainage Area | 4,961 sq mi |
| Max Discharge | 120,000 cfs |
| Spillway Type | Controlled |
Ownership & Safety
| Purpose | Navigation |
| Owner | USACE - Pittsburgh District |
| Owner Type | Federal |
| Hazard Classification | Significant |
| Condition Assessment | Not Available |
| Last Inspection | 08/27/2025 |
| Emergency Action Plan | Yes |