Hoover Dam
Key Takeaway
Hoover Dam is classified as low hazard in South Dakota. It was completed in 1930 and is 96 years old. Its primary use is fish and wildlife pond.
Physical Details
| Dam Height | 16 ft (taller than 15.7% in SD) |
| Dam Length | 2,148 ft |
| Dam Type | Earth |
| Max Storage | 888 acre-ft |
| Normal Storage | 190 acre-ft |
| Surface Area | 61 acres |
| Drainage Area | 23 sq mi |
| Max Discharge | 2,080 cfs |
| Year Completed | 1930 (96 years old) |
| Year Modified | 2003 |
| NID ID | SD02515 |
Safety Information
No probable loss of human life and low economic/environmental losses expected.
Hazard potential describes downstream consequences of failure, not the dam's current condition. What does this mean?
Ownership
MARK JENSEN
Private
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Low Hazard 15 ftFrequently Asked Questions
What is the hazard classification of Hoover Dam?
Hoover Dam is classified as Low Hazard. No probable loss of human life and low economic/environmental losses expected. This classification refers to the potential downstream consequences of a failure, not the dam's current structural condition.
Who owns and operates Hoover Dam?
Hoover Dam is owned by MARK JENSEN (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Hoover Dam built?
Hoover Dam was completed in 1930, making it 96 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 Hoover Dam?
Hoover Dam serves the following purposes: Fish And Wildlife Pond, Fire Protection, Stock, Or Small Fish Pond. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.
How tall is Hoover Dam?
Hoover Dam has a dam height of 16 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 Hoover Dam last inspected?
Hoover Dam was last inspected on November 19, 2003. Inspection dates indicate when a formal review occurred, not the results of that inspection.