Black Hawk
Key Takeaway
Black Hawk is classified as significant hazard in California. It was completed in 1971 and is 55 years old. Its primary use is water supply. Significant hazard means failure could cause economic or environmental damage. Learn more.
Physical Details
| Dam Height | 45 ft (taller than 54% in CA) |
| Dam Length | 510 ft |
| Dam Type | Earth |
| Max Storage | 740 acre-ft |
| Surface Area | 55 acres |
| Drainage Area | 59 sq mi |
| Year Completed | 1971 (55 years old) |
| NID ID | CA00707 |
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
Private Entity
Private
Nearby Dams
Frequently Asked Questions
What is the hazard classification of Black Hawk?
Black Hawk 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 Black Hawk?
Black Hawk is owned by Private Entity (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Black Hawk built?
Black Hawk was completed in 1971, making it 55 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 Black Hawk?
Black Hawk serves the following purposes: Water Supply, Recreation. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.
How tall is Black Hawk?
Black Hawk has a dam height of 45 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 Black Hawk last inspected?
Black Hawk was last inspected on May 25, 2022. Inspection dates indicate when a formal review occurred, not the results of that inspection.