Martinez
Key Takeaway
Martinez is classified as high hazard in California. It was completed in 1947 and is 79 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 | 44 ft (taller than 52.6% in CA) |
| Dam Length | 1,200 ft |
| Dam Type | Earth |
| Max Storage | 296 acre-ft |
| Normal Storage | 268 acre-ft |
| Surface Area | 14 acres |
| Drainage Area | 0 sq mi |
| Max Discharge | 272 cfs |
| Year Completed | 1947 (79 years old) |
| NID ID | CA10168 |
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
RECLAMATION
Federal Government
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High Hazard 273 ftFrequently Asked Questions
What is the hazard classification of Martinez?
Martinez 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 Martinez?
Martinez is owned by RECLAMATION (Federal Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Martinez built?
Martinez was completed in 1947, making it 79 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 Martinez?
Martinez serves the following purposes: Water Supply. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.
How tall is Martinez?
Martinez has a dam height of 44 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 Martinez last inspected?
Martinez was last inspected on August 17, 2020. Inspection dates indicate when a formal review occurred, not the results of that inspection.