San Dieguito
Key Takeaway
San Dieguito is classified as high hazard in California. It was completed in 1918 and is 108 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 | 51 ft (taller than 60.6% in CA) |
| Dam Length | 650 ft |
| Dam Type | Multi-Arch |
| Max Storage | 883 acre-ft |
| Surface Area | 56 acres |
| Drainage Area | 1 sq mi |
| Year Completed | 1918 (108 years old) |
| NID ID | CA00906 |
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
Santa Fe Irrigation and San Dieguito Water District
Public Utility
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High Hazard 22 ftFrequently Asked Questions
What is the hazard classification of San Dieguito?
San Dieguito 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 San Dieguito?
San Dieguito is owned by Santa Fe Irrigation and San Dieguito Water District (Public Utility). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was San Dieguito built?
San Dieguito was completed in 1918, making it 108 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 San Dieguito?
San Dieguito 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 San Dieguito?
San Dieguito has a dam height of 51 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 San Dieguito last inspected?
San Dieguito was last inspected on July 28, 2022. Inspection dates indicate when a formal review occurred, not the results of that inspection.