Shinn
Key Takeaway
Shinn is classified as significant hazard in California. It was completed in 1987 and is 39 years old. Its primary use is tailings. Significant hazard means failure could cause economic or environmental damage. Learn more.
Physical Details
| Dam Height | 45 ft (taller than 54% in CA) |
| Dam Length | 1,000 ft |
| Dam Type | Earth |
| Max Storage | 390 acre-ft |
| Surface Area | 26 acres |
| Drainage Area | 1 sq mi |
| Year Completed | 1987 (39 years old) |
| NID ID | CA01326 |
Safety Information
No probable loss of human life, but can cause economic loss, environmental damage, or disruption of lifeline facilities.
Hazard potential describes downstream consequences of failure, not the dam's current condition. What does this mean?
Ownership
Alameda County Water District
Local Government
Nearby Dams
Quarry Pits
Alameda, CA
High Hazard 26 ftRubber Dam 3
Alameda, CA
Significant Hazard 17 ftDecoto Reservoir
Alameda, CA
High Hazard 33 ftMiddlefield Reservoir
Alameda, CA
High Hazard 147 ftPatterson
Alameda, CA
Significant Hazard 100 ftWard Creek
Alameda, CA
High Hazard 71 ftSan Lorenzo Creek
Alameda, CA
High Hazard 65 ftJames H. Turner
Alameda, CA
High Hazard 193 ftFrequently Asked Questions
What is the hazard classification of Shinn?
Shinn is classified as Significant Hazard. No probable loss of human life, but can cause economic loss, environmental damage, or disruption of lifeline facilities. This classification refers to the potential downstream consequences of a failure, not the dam's current structural condition.
Who owns and operates Shinn?
Shinn is owned by Alameda County Water District (Local Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Shinn built?
Shinn was completed in 1987, making it 39 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 Shinn?
Shinn serves the following purposes: Tailings, Water Supply. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.
How tall is Shinn?
Shinn has a dam height of 45 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 Shinn last inspected?
Shinn was last inspected on October 25, 2021. Inspection dates indicate when a formal review occurred, not the results of that inspection.