Lake Tankersley Dam
Key Takeaway
Lake Tankersley Dam is classified as high hazard in Texas. It was completed in 1957 and is 69 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 | 36 ft (taller than 79.5% in TX) |
| Dam Length | 1,900 ft |
| Dam Type | Earth |
| Max Storage | 4.1K acre-ft |
| Normal Storage | 2.7K acre-ft |
| Surface Area | 275 acres |
| Drainage Area | 9 sq mi |
| Max Discharge | 15,378 cfs |
| Year Completed | 1957 (69 years old) |
| NID ID | TX04017 |
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
CITY OF MOUNT PLEASANT
Local Government
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Low Hazard 8 ftFrequently Asked Questions
What is the hazard classification of Lake Tankersley Dam?
Lake Tankersley 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 Lake Tankersley Dam?
Lake Tankersley Dam is owned by CITY OF MOUNT PLEASANT (Local Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Lake Tankersley Dam built?
Lake Tankersley Dam was completed in 1957, making it 69 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 Lake Tankersley Dam?
Lake Tankersley Dam serves the following purposes: Flood Risk Reduction, Water Supply. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.
How tall is Lake Tankersley Dam?
Lake Tankersley Dam has a dam height of 36 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 Lake Tankersley Dam last inspected?
Lake Tankersley Dam was last inspected on July 28, 2022. Inspection dates indicate when a formal review occurred, not the results of that inspection.