Dutch Flat Afterbay
Key Takeaway
Dutch Flat Afterbay is classified as low hazard in California. It was completed in 1965 and is 61 years old. Its primary use is irrigation.
Physical Details
| Dam Height | 165 ft (taller than 91.8% in CA) |
| Dam Length | 600 ft |
| Dam Type | Rockfill |
| Max Storage | 2.0K acre-ft |
| Normal Storage | 1.9K acre-ft |
| Surface Area | 42 acres |
| Drainage Area | 23 sq mi |
| Max Discharge | 15,000 cfs |
| Year Completed | 1965 (61 years old) |
| NID ID | CA00257 |
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
Nevada Irrigation District
Public Utility
Nearby Dams
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Low Hazard 44 ftFrequently Asked Questions
What is the hazard classification of Dutch Flat Afterbay?
Dutch Flat Afterbay 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 Dutch Flat Afterbay?
Dutch Flat Afterbay is owned by Nevada Irrigation District (Public Utility). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Dutch Flat Afterbay built?
Dutch Flat Afterbay was completed in 1965, making it 61 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 Dutch Flat Afterbay?
Dutch Flat Afterbay serves the following purposes: Irrigation, Hydroelectric, Water Supply. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.
How tall is Dutch Flat Afterbay?
Dutch Flat Afterbay has a dam height of 165 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 Dutch Flat Afterbay last inspected?
Dutch Flat Afterbay was last inspected on August 22, 2022. Inspection dates indicate when a formal review occurred, not the results of that inspection.