Rossmoor Retarding Basin
Key Takeaway
Rossmoor Retarding Basin is classified as low hazard in California. It was completed in 2002 and is 24 years old. Its primary use is flood risk reduction.
Physical Details
| Dam Height | 14 ft (taller than 6.7% in CA) |
| Dam Length | 95 ft |
| Dam Type | Earth |
| Max Storage | 175 acre-ft |
| Surface Area | 25 acres |
| Drainage Area | 3 sq mi |
| Year Completed | 2002 (24 years old) |
| NID ID | CA01443 |
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
County of Orange
Local Government
Nearby Dams
Frequently Asked Questions
What is the hazard classification of Rossmoor Retarding Basin?
Rossmoor Retarding Basin 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 Rossmoor Retarding Basin?
Rossmoor Retarding Basin is owned by County of Orange (Local Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Rossmoor Retarding Basin built?
Rossmoor Retarding Basin was completed in 2002, making it 24 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 Rossmoor Retarding Basin?
Rossmoor Retarding Basin serves the following purposes: Flood Risk Reduction. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.
How tall is Rossmoor Retarding Basin?
Rossmoor Retarding Basin has a dam height of 14 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 Rossmoor Retarding Basin last inspected?
Rossmoor Retarding Basin was last inspected on February 24, 2022. Inspection dates indicate when a formal review occurred, not the results of that inspection.