South Mopac Dam
Key Takeaway
South Mopac Dam is classified as significant hazard in Texas. It was completed in 1998 and is 28 years old. Its primary use is flood risk reduction. Significant hazard means failure could cause economic or environmental damage. Learn more.
Physical Details
| Dam Height | 18 ft (taller than 25.8% in TX) |
| Dam Length | 1,600 ft |
| Dam Type | Earth |
| Max Storage | 283 acre-ft |
| Normal Storage | 0 acre-ft |
| Surface Area | 0 acres |
| Drainage Area | 4 sq mi |
| Max Discharge | 9,460 cfs |
| Year Completed | 1998 (28 years old) |
| NID ID | TX06509 |
Safety Information
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?
Ownership
CITY OF AUSTIN
Local Government
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What is the hazard classification of South Mopac Dam?
South Mopac Dam 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 South Mopac Dam?
South Mopac Dam is owned by CITY OF AUSTIN (Local Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was South Mopac Dam built?
South Mopac Dam was completed in 1998, making it 28 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 Mopac Dam?
South Mopac 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 South Mopac Dam?
South Mopac Dam has a dam height of 18 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 Mopac Dam last inspected?
South Mopac Dam was last inspected on July 22, 2021. Inspection dates indicate when a formal review occurred, not the results of that inspection.