Atascadero Park
Key Takeaway
Atascadero Park is classified as high hazard in California. It was completed in 1918 and is 108 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 | 18 ft (taller than 12.6% in CA) |
| Dam Length | 500 ft |
| Dam Type | Earth |
| Max Storage | 250 acre-ft |
| Surface Area | 30 acres |
| Drainage Area | 1 sq mi |
| Year Completed | 1918 (108 years old) |
| NID ID | CA00723 |
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 Atascadero
Local Government
Nearby Dams
Frequently Asked Questions
What is the hazard classification of Atascadero Park?
Atascadero Park 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 Atascadero Park?
Atascadero Park is owned by City of Atascadero (Local Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Atascadero Park built?
Atascadero Park was completed in 1918, making it 108 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 Atascadero Park?
Atascadero Park 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 Atascadero Park?
Atascadero Park has a dam height of 18 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 Atascadero Park last inspected?
Atascadero Park was last inspected on January 27, 2022. Inspection dates indicate when a formal review occurred, not the results of that inspection.