Garrison Ranch Lake Dam
Key Takeaway
Garrison Ranch Lake Dam is classified as high hazard in Texas. It was completed in 1957 and is 69 years old. 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 | 38 ft (taller than 82.5% in TX) |
| Dam Length | 850 ft |
| Dam Type | Earth |
| Max Storage | 680 acre-ft |
| Normal Storage | 162 acre-ft |
| Surface Area | 15 acres |
| Drainage Area | 42 sq mi |
| Max Discharge | 79,000 cfs |
| Year Completed | 1957 (69 years old) |
| NID ID | TX02909 |
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
GEORGE YAX;TRAILS END RANCH
Private
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Significant Hazard 37 ftFrequently Asked Questions
What is the hazard classification of Garrison Ranch Lake Dam?
Garrison Ranch Lake 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 Garrison Ranch Lake Dam?
Garrison Ranch Lake Dam is owned by GEORGE YAX;TRAILS END RANCH (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Garrison Ranch Lake Dam built?
Garrison Ranch Lake 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.
How tall is Garrison Ranch Lake Dam?
Garrison Ranch Lake Dam has a dam height of 38 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 Garrison Ranch Lake Dam last inspected?
Garrison Ranch Lake Dam was last inspected on February 21, 2019. Inspection dates indicate when a formal review occurred, not the results of that inspection.