Elmendorf Lake Dam
Key Takeaway
Elmendorf Lake Dam is classified as high hazard in Texas. It was completed in 1967 and is 59 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 | 10 ft (taller than 3.8% in TX) |
| Dam Length | 2,000 ft |
| Dam Type | Concrete |
| Max Storage | 105 acre-ft |
| Normal Storage | 105 acre-ft |
| Surface Area | 17 acres |
| Drainage Area | 19 sq mi |
| Max Discharge | 75,842 cfs |
| Year Completed | 1967 (59 years old) |
| NID ID | TX01446 |
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 SAN ANTONIO
Local Government
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High HazardFrequently Asked Questions
What is the hazard classification of Elmendorf Lake Dam?
Elmendorf 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 Elmendorf Lake Dam?
Elmendorf Lake Dam is owned by CITY OF SAN ANTONIO (Local Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Elmendorf Lake Dam built?
Elmendorf Lake Dam was completed in 1967, making it 59 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 Elmendorf Lake Dam?
Elmendorf Lake Dam serves the following purposes: Flood Risk Reduction, Recreation. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.
How tall is Elmendorf Lake Dam?
Elmendorf Lake Dam has a dam height of 10 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 Elmendorf Lake Dam last inspected?
Elmendorf Lake Dam was last inspected on September 25, 2018. Inspection dates indicate when a formal review occurred, not the results of that inspection.