Emergency Sewage Retention Pond No.2 Structure

Tributary to Bull Run· Fairfax, Virginia· Earth· 25 ft tall
Significant Hazard Other Local Government

Key Takeaway

Emergency Sewage Retention Pond No.2 Structure is classified as significant hazard in Virginia. Its primary use is other. Significant hazard means failure could cause economic or environmental damage. Learn more.

Physical Details

Dam Height 25 ft (taller than 46.7% in VA)
Dam Length1,220 ft
Dam TypeEarth
Max Storage140 acre-ft
Drainage Area0 sq mi
NID IDVA059056

Safety Information

Significant Hazard

No probable loss of human life, but can cause economic loss, environmental damage, or disruption of lifeline facilities.

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

Emergency Action Plan: No
State Regulated: Yes
Regulatory Agency: Department of Conservation and Recreation

Ownership

Upper Occoquan Sewage Authority

Local Government

Nearby Dams

Frequently Asked Questions

What is the hazard classification of Emergency Sewage Retention Pond No.2 Structure?

Emergency Sewage Retention Pond No.2 Structure is classified as Significant Hazard. No probable loss of human life, but can cause economic loss, environmental damage, or disruption of lifeline facilities. This classification refers to the potential downstream consequences of a failure, not the dam's current structural condition.

Who owns and operates Emergency Sewage Retention Pond No.2 Structure?

Emergency Sewage Retention Pond No.2 Structure is owned by Upper Occoquan Sewage Authority (Local Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.

What is the primary purpose of Emergency Sewage Retention Pond No.2 Structure?

Emergency Sewage Retention Pond No.2 Structure serves the following purposes: Other. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.

How tall is Emergency Sewage Retention Pond No.2 Structure?

Emergency Sewage Retention Pond No.2 Structure has a dam height of 25 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.

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.