Upper Sand Creek Detention Basin
Key Takeaway
Upper Sand Creek Detention Basin is classified as high hazard in California. It was completed in 2014 and is 12 years old. Its primary use is flood risk reduction. 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 | 40 ft (taller than 46.3% in CA) |
| Dam Length | 1,400 ft |
| Dam Type | Earth |
| Max Storage | 895 acre-ft |
| Surface Area | 44 acres |
| Year Completed | 2014 (12 years old) |
| NID ID | CA01555 |
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
Contra Costa County Flood Control and Water Conservation District
Local Government
Nearby Dams
Deer Creek
Contra Costa, CA
High Hazard 29 ftDry Creek
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High Hazard 30 ftAntioch Reservoir
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High Hazard 30 ftContra Loma
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High Hazard 82 ftMarsh Creek
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High Hazard 59 ftLos Vaqueros
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High Hazard 231 ftMontezuma
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Low Hazard 14 ftClifton Court Forebay
Contra Costa, CA
Low Hazard 34 ftFrequently Asked Questions
What is the hazard classification of Upper Sand Creek Detention Basin?
Upper Sand Creek Detention Basin 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 Upper Sand Creek Detention Basin?
Upper Sand Creek Detention Basin is owned by Contra Costa County Flood Control and Water Conservation District (Local Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Upper Sand Creek Detention Basin built?
Upper Sand Creek Detention Basin was completed in 2014, making it 12 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 Upper Sand Creek Detention Basin?
Upper Sand Creek Detention Basin serves the following purposes: Flood Risk Reduction. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.
How tall is Upper Sand Creek Detention Basin?
Upper Sand Creek Detention Basin has a dam height of 40 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 Upper Sand Creek Detention Basin last inspected?
Upper Sand Creek Detention Basin was last inspected on March 9, 2022. Inspection dates indicate when a formal review occurred, not the results of that inspection.