Potomac River Dam #4
Maryland — Washington County
Location
| State | Maryland |
| County | Washington |
| Coordinates | 39.49413, -77.82692 |
Physical Characteristics
| NID Height | 20 ft |
| Dam Height | 20 ft |
| Dam Length | 715 ft |
| NID Storage | 6,750 acre-ft |
| Max Storage | 6,750 acre-ft |
| Surface Area | 675 acres |
Safety Classification
| Hazard Potential | Significant |
| Condition Assessment | Not Available |
| EAP Status | — |
| Last Inspection | — |
| Inspection Frequency | 3 |
Dam Information
| Year Completed | 1869 |
| Primary Purpose | Hydroelectric |
| Dam Type | — |
| Owner Type | — |
| Owner | DOI NPS |
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.