Heenan Lake
Key Takeaway
Heenan Lake is classified as low hazard in California. It was completed in 1929 and is 97 years old. Its primary use is water supply.
Physical Details
| Dam Height | 39 ft (taller than 44.4% in CA) |
| Dam Length | 600 ft |
| Dam Type | Earth |
| Max Storage | 3.1K acre-ft |
| Surface Area | 124 acres |
| Drainage Area | 4 sq mi |
| Year Completed | 1929 (97 years old) |
| NID ID | CA00641 |
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
California Department of Fish and Wildlife
State Government
Nearby Dams
Frequently Asked Questions
What is the hazard classification of Heenan Lake?
Heenan Lake 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 Heenan Lake?
Heenan Lake is owned by California Department of Fish and Wildlife (State Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Heenan Lake built?
Heenan Lake was completed in 1929, making it 97 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 Heenan Lake?
Heenan Lake 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 Heenan Lake?
Heenan Lake has a dam height of 39 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 Heenan Lake last inspected?
Heenan Lake was last inspected on June 22, 2022. Inspection dates indicate when a formal review occurred, not the results of that inspection.