Rocky Branch Regional Swm Dam

Rocky Branch· Prince William, Virginia· Earth· 22 ft tall
High Hazard Flood Risk Reduction Not Listed

Key Takeaway

Rocky Branch Regional Swm Dam is classified as high hazard in Virginia. Its primary use is flood risk reduction. High hazard means loss of life is likely if the dam fails — it does not indicate the dam's current condition. Learn more.

Physical Details

Dam Height 22 ft (taller than 34.1% in VA)
Dam Length935 ft
Dam TypeEarth
Max Storage376 acre-ft
Normal Storage4 acre-ft
Surface Area1 acres
Drainage Area1 sq mi
NID IDVA153025

Safety Information

High Hazard

Loss of human life is likely if the dam fails.

Hazard potential describes downstream consequences of failure, not the dam's current condition. What does this mean?

Emergency Action Plan: Yes
Last Inspection: June 25, 2022
State Regulated: Yes
Regulatory Agency: Department of Conservation and Recreation

Ownership

Virginia Gateway Owners Association

Not Listed

Nearby Dams

Frequently Asked Questions

What is the hazard classification of Rocky Branch Regional Swm Dam?

Rocky Branch Regional Swm Dam is classified as High Hazard. Loss of human life is likely if the dam fails. This classification refers to the potential downstream consequences of a failure, not the dam's current structural condition.

Who owns and operates Rocky Branch Regional Swm Dam?

Rocky Branch Regional Swm Dam is owned by Virginia Gateway Owners Association (Not Listed). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.

What is the primary purpose of Rocky Branch Regional Swm Dam?

Rocky Branch Regional Swm Dam serves the following purposes: Flood Risk Reduction. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.

How tall is Rocky Branch Regional Swm Dam?

Rocky Branch Regional Swm Dam has a dam height of 22 ft. Dam height is measured from the natural streambed at the downstream toe to the top of the dam, and may differ from the visible height.

When was Rocky Branch Regional Swm Dam last inspected?

Rocky Branch Regional Swm Dam was last inspected on June 25, 2022. Inspection dates indicate when a formal review occurred, not the results of that inspection.

Data from the National Inventory of Dams (NID) maintained by the US Army Corps of Engineers. Dam conditions may have changed since the last update. This site is not affiliated with USACE. Do not use for emergency planning — contact your local dam safety program.