Twin Buttes
Key Takeaway
Twin Buttes is classified as high hazard in Texas. It was completed in 1962 and is 64 years old. 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 | 134 ft (taller than 99.7% in TX) |
| Dam Length | 42,460 ft |
| Dam Type | Earth |
| Max Storage | 1.1M acre-ft |
| Normal Storage | 186.2K acre-ft |
| Surface Area | 23,508 acres |
| Drainage Area | 2,472 sq mi |
| Max Discharge | 47,300 cfs |
| Year Completed | 1962 (64 years old) |
| NID ID | TX00022 |
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
RECLAMATION
Federal Government
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Low Hazard 20 ftFrequently Asked Questions
What is the hazard classification of Twin Buttes?
Twin Buttes 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 Twin Buttes?
Twin Buttes is owned by RECLAMATION (Federal Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Twin Buttes built?
Twin Buttes was completed in 1962, making it 64 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 Twin Buttes?
Twin Buttes serves the following purposes: Flood Risk Reduction, Irrigation, Recreation. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.
How tall is Twin Buttes?
Twin Buttes has a dam height of 134 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 Twin Buttes last inspected?
Twin Buttes was last inspected on June 16, 2020. Inspection dates indicate when a formal review occurred, not the results of that inspection.