Hoover
COLORADO RIVER·
Clark, Nevada·
Built 1935·
Concrete·
730 ft tall
Physical Details
| Dam Height | 730 ft (taller than 99.8% in NV) |
| Dam Length | 1,244 ft |
| Dam Type | Concrete |
| Max Storage | 30.2M acre-ft |
| Normal Storage | 28.3M acre-ft |
| Surface Area | 162,700 acres |
| Drainage Area | 167,800 sq mi |
| Max Discharge | 200,000 cfs |
| Year Completed | 1935 (91 years old) |
| NID ID | NV10122 |
Safety Information
High Hazard
Loss of human life is likely if the dam fails
Emergency Action Plan: Yes
Last Inspection: April 16, 2020
State Regulated: No
Ownership
RECLAMATION
Federal Government
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Significant Hazard 133 ftFrequently Asked Questions
What is the hazard classification of Hoover?
Hoover is classified as High Hazard. Loss of human life is likely if the dam fails.
Who owns Hoover?
Hoover is owned by RECLAMATION (Federal Government).
When was Hoover last inspected?
Hoover was last inspected on April 16, 2020.
When was Hoover built?
Hoover was completed in 1935, making it 91 years old.
Data from the National Inventory of Dams (NID) maintained by the US Army Corps of Engineers. Dam conditions may have changed since the last update. This site is not affiliated with USACE. Do not use for emergency planning — contact your local dam safety program.