Coastways
Key Takeaway
Coastways is classified as high hazard in California. It was completed in 1951 and is 75 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 | 46 ft (taller than 55.4% in CA) |
| Dam Length | 1,000 ft |
| Dam Type | Earth |
| Max Storage | 100 acre-ft |
| Surface Area | 9 acres |
| Drainage Area | 0 sq mi |
| Year Completed | 1951 (75 years old) |
| NID ID | CA01007 |
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
Coastways Ranch
Private
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Low Hazard 21 ftFrequently Asked Questions
What is the hazard classification of Coastways?
Coastways 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 Coastways?
Coastways is owned by Coastways Ranch (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Coastways built?
Coastways was completed in 1951, making it 75 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 Coastways?
Coastways 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 Coastways?
Coastways has a dam height of 46 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 Coastways last inspected?
Coastways was last inspected on April 6, 2022. Inspection dates indicate when a formal review occurred, not the results of that inspection.