Twin Lakes Dam
Key Takeaway
Twin Lakes Dam is classified as high hazard in Texas. It was completed in 1972 and is 54 years old. Its primary use is recreation. 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 | 26 ft (taller than 55.2% in TX) |
| Dam Length | 625 ft |
| Dam Type | Earth |
| Max Storage | 305 acre-ft |
| Normal Storage | 104 acre-ft |
| Surface Area | 10 acres |
| Drainage Area | 6 sq mi |
| Max Discharge | 15,450 cfs |
| Year Completed | 1972 (54 years old) |
| NID ID | TX06862 |
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
WILLIAMSON COUNTY
Local Government
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High Hazard 37 ftFrequently Asked Questions
What is the hazard classification of Twin Lakes Dam?
Twin Lakes 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 Twin Lakes Dam?
Twin Lakes Dam is owned by WILLIAMSON COUNTY (Local Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Twin Lakes Dam built?
Twin Lakes Dam was completed in 1972, making it 54 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 Lakes Dam?
Twin Lakes Dam serves the following purposes: Recreation. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.
How tall is Twin Lakes Dam?
Twin Lakes Dam has a dam height of 26 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 Lakes Dam last inspected?
Twin Lakes Dam was last inspected on July 8, 2020. Inspection dates indicate when a formal review occurred, not the results of that inspection.