South Rivanna
Key Takeaway
South Rivanna is classified as high hazard in Virginia. It was completed in 1965 and is 61 years old. Its primary use is hydroelectric. 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 | 47 ft (taller than 92% in VA) |
| Dam Length | 700 ft |
| Dam Type | Gravity |
| Max Storage | 38.6K acre-ft |
| Normal Storage | 38.6K acre-ft |
| Surface Area | 410 acres |
| Drainage Area | 259 sq mi |
| Max Discharge | 157,700 cfs |
| Year Completed | 1965 (61 years old) |
| NID ID | VA003123 |
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
Rivanna Water & Sewer Authority
Public Utility
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What is the hazard classification of South Rivanna?
South Rivanna 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 South Rivanna?
South Rivanna is owned by Rivanna Water & Sewer Authority (Public Utility). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was South Rivanna built?
South Rivanna was completed in 1965, making it 61 years old. Many U.S. dams were built between the 1930s and 1970s during a period of major infrastructure investment.
What is the primary purpose of South Rivanna?
South Rivanna serves the following purposes: Hydroelectric. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.
How tall is South Rivanna?
South Rivanna has a dam height of 47 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 South Rivanna last inspected?
South Rivanna was last inspected on September 28, 2022. Inspection dates indicate when a formal review occurred, not the results of that inspection.