Haiwee
Key Takeaway
Haiwee is classified as high hazard in California. It was completed in 1913 and is 113 years old. Its primary use is water supply. 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 | 81 ft (taller than 76.9% in CA) |
| Dam Length | 1,555 ft |
| Dam Type | Earth |
| Max Storage | 60.6K acre-ft |
| Surface Area | 1,350 acres |
| Drainage Area | 89 sq mi |
| Year Completed | 1913 (113 years old) |
| NID ID | CA00082 |
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 Los Angeles Department of Water And Power
Local Government
Frequently Asked Questions
What is the hazard classification of Haiwee?
Haiwee 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 Haiwee?
Haiwee is owned by City of Los Angeles Department of Water And Power (Local Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Haiwee built?
Haiwee was completed in 1913, making it 113 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 Haiwee?
Haiwee serves the following purposes: Water Supply, Irrigation. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.
How tall is Haiwee?
Haiwee has a dam height of 81 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 Haiwee last inspected?
Haiwee was last inspected on November 29, 2022. Inspection dates indicate when a formal review occurred, not the results of that inspection.