Upper Occoquan Sewage Authority Dam
Key Takeaway
Upper Occoquan Sewage Authority Dam is classified as high hazard in Virginia. Its primary use is other. 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 | 41 ft (taller than 87.7% in VA) |
| Dam Length | 1,680 ft |
| Dam Type | Earth |
| Max Storage | 1.1K acre-ft |
| Normal Storage | 515 acre-ft |
| Surface Area | 54 acres |
| Drainage Area | 1 sq mi |
| NID ID | VA059024 |
Safety Information
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?
Ownership
UOSA
Local Government
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Significant Hazard 26 ftFrequently Asked Questions
What is the hazard classification of Upper Occoquan Sewage Authority Dam?
Upper Occoquan Sewage Authority 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 Upper Occoquan Sewage Authority Dam?
Upper Occoquan Sewage Authority Dam is owned by UOSA (Local Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
What is the primary purpose of Upper Occoquan Sewage Authority Dam?
Upper Occoquan Sewage Authority Dam 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 Upper Occoquan Sewage Authority Dam?
Upper Occoquan Sewage Authority Dam has a dam height of 41 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 Upper Occoquan Sewage Authority Dam last inspected?
Upper Occoquan Sewage Authority Dam was last inspected on September 22, 2022. Inspection dates indicate when a formal review occurred, not the results of that inspection.