Alisal Creek
Key Takeaway
Alisal Creek is classified as high hazard in California. It was completed in 1971 and is 55 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 | 93 ft (taller than 80.3% in CA) |
| Dam Length | 1,100 ft |
| Dam Type | Earth |
| Max Storage | 2.3K acre-ft |
| Surface Area | 97 acres |
| Drainage Area | 8 sq mi |
| Year Completed | 1971 (55 years old) |
| NID ID | CA00731 |
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
The Alisal Ranch
Private
Nearby Dams
Frequently Asked Questions
What is the hazard classification of Alisal Creek?
Alisal Creek 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 Alisal Creek?
Alisal Creek is owned by The Alisal Ranch (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Alisal Creek built?
Alisal Creek 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 Alisal Creek?
Alisal Creek serves the following purposes: Water Supply, Irrigation, Recreation. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.
How tall is Alisal Creek?
Alisal Creek has a dam height of 93 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 Alisal Creek last inspected?
Alisal Creek was last inspected on May 20, 2022. Inspection dates indicate when a formal review occurred, not the results of that inspection.