Winters Branch Dam is an earth dam located in Manassas County, Virginia. It carries a Significant hazard potential classification and has a satisfactory condition assessment.
Dam profile
NID height · 27 ft27 ft tall and 470 ft long, taller than 59% of U.S. dams with a recorded height. Height is drawn to scale against a two-story house, about 25 ft; the profile is a generic embankment section and the water level is illustrative.
About Winters Branch Dam
The primary purpose of Winters Branch Dam is flood risk reduction. The dam is designed to control downstream flooding by temporarily storing excess water during storms and releasing it at a controlled rate. The dam is owned by City of Manassas;city of Manassas (local government). It impounds the Winters Branch.
The dam stands 27 feet tall and stretches 470 feet across, creates a reservoir covering 1 acres, has a maximum storage capacity of 175 acre-feet, and collects water from a drainage area of 1 square miles.
This dam has a significant hazard potential classification, meaning that a failure could cause significant economic damage — flooding roads, bridges, or property downstream — but is not expected to result in loss of life. Its condition is rated satisfactory, indicating no existing or potential dam safety deficiencies are recognized. An emergency action plan is in place for this dam. The most recent inspection on record was 05/27/2021.
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Location
| State | Virginia |
| County | Manassas |
| River/Stream | Winters Branch |
| Coordinates | 38.74170, -77.49240 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 27 ft |
| Dam Height | 27 ft |
| Dam Length | 470 ft |
Storage & Hydraulics
| NID Storage | 175 acre-ft |
| Max Storage | 175 acre-ft |
| Normal Storage | 3 acre-ft |
| Surface Area | 1 acres |
| Drainage Area | 1 sq mi |
Ownership & Safety
| Purpose | Flood Risk Reduction |
| Owner | City of Manassas;city of Manassas |
| Owner Type | Local Government |
| Hazard Classification | Significant |
| Condition Assessment | Satisfactory |
| Last Inspection | 05/27/2021 |
| Emergency Action Plan | Yes |
Identifiers
| NID ID | VA683001 |
| Federal ID | VA683001 |
| More Info | State Dam Safety Program |