Nantucket Dam
Key Takeaway
Nantucket Dam is classified as significant hazard in Texas. It was completed in 1977 and is 49 years old. Its primary use is recreation. Significant hazard means failure could cause economic or environmental damage. Learn more.
Physical Details
| Dam Height | 20 ft (taller than 33.5% in TX) |
| Dam Length | 900 ft |
| Dam Type | Earth |
| Max Storage | 428 acre-ft |
| Normal Storage | 140 acre-ft |
| Surface Area | 35 acres |
| Drainage Area | 2 sq mi |
| Max Discharge | 1,727 cfs |
| Year Completed | 1977 (49 years old) |
| NID ID | TX06372 |
Safety Information
No probable loss of human life, but can cause economic loss, environmental damage, or disruption of lifeline facilities.
Hazard potential describes downstream consequences of failure, not the dam's current condition. What does this mean?
Ownership
NANTUCKET PRESERVATION ASSOCIATION
Private
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Low Hazard 30 ftFrequently Asked Questions
What is the hazard classification of Nantucket Dam?
Nantucket Dam is classified as Significant Hazard. No probable loss of human life, but can cause economic loss, environmental damage, or disruption of lifeline facilities. This classification refers to the potential downstream consequences of a failure, not the dam's current structural condition.
Who owns and operates Nantucket Dam?
Nantucket Dam is owned by NANTUCKET PRESERVATION ASSOCIATION (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Nantucket Dam built?
Nantucket Dam was completed in 1977, making it 49 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 Nantucket Dam?
Nantucket 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 Nantucket Dam?
Nantucket Dam has a dam height of 20 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 Nantucket Dam last inspected?
Nantucket Dam was last inspected on November 13, 2018. Inspection dates indicate when a formal review occurred, not the results of that inspection.