Winslow Dam
Winslow Dam is an earth dam located in Fauquier County, Virginia. It carries a Significant hazard potential classification and has a fair condition assessment.
About Winslow Dam
The primary purpose of Winslow Dam is recreation. The dam creates a reservoir used for recreational activities such as fishing, boating, and swimming. The dam is owned by Seneca Lake Estates, Inc. (private). It impounds the Negro Run.
The dam stands 36 feet tall and stretches 510 feet across, has a maximum storage capacity of 779 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 fair — the dam has minor deficiencies that are being addressed or do not pose an immediate safety threat. An emergency action plan is in place for this dam. The most recent inspection on record was 04/30/2022.
At 36 feet, this dam is taller than 83% of dams nationwide.
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Location
| State | Virginia |
| County | Fauquier |
| River/Stream | Negro Run |
| Coordinates | 38.57180, -77.58070 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 36 ft |
| Dam Height | 36 ft |
| Dam Length | 510 ft |
Storage & Hydraulics
| NID Storage | 779 acre-ft |
| Max Storage | 779 acre-ft |
| Normal Storage | 477 acre-ft |
| Drainage Area | 1 sq mi |
| Max Discharge | 11,815 cfs |
Ownership & Safety
| Purpose | Recreation |
| Owner | Seneca Lake Estates, Inc. |
| Owner Type | Private |
| Hazard Classification | Significant |
| Condition Assessment | Fair |
| Last Inspection | 04/30/2022 |
| Emergency Action Plan | Yes |
Identifiers
| NID ID | VA061022 |
| Federal ID | VA061022 |
| More Info | State Dam Safety Program |