Goodwin
Key Takeaway
Goodwin is classified as high hazard in California. It was completed in 1912 and is 114 years old. Its primary use is other. 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 | 101 ft (taller than 82.4% in CA) |
| Dam Length | 460 ft |
| Dam Type | Multi-Arch |
| Max Storage | 500 acre-ft |
| Surface Area | 70 acres |
| Drainage Area | 997 sq mi |
| Year Completed | 1912 (114 years old) |
| NID ID | CA00260 |
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
Tri-Dam Project
Public Utility
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Low Hazard 24 ftFrequently Asked Questions
What is the hazard classification of Goodwin?
Goodwin 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 Goodwin?
Goodwin is owned by Tri-Dam Project (Public Utility). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Goodwin built?
Goodwin was completed in 1912, making it 114 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 Goodwin?
Goodwin serves the following purposes: Other, Irrigation, Water Supply. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.
How tall is Goodwin?
Goodwin has a dam height of 101 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 Goodwin last inspected?
Goodwin was last inspected on January 27, 2022. Inspection dates indicate when a formal review occurred, not the results of that inspection.