Alessi Flood Control Dam
Key Takeaway
Alessi Flood Control Dam is classified as high hazard in Colorado. It was completed in 1970 and is 56 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 | 29 ft (taller than 64% in CO) |
| Dam Length | 2,197 ft |
| Dam Type | Earth |
| Max Storage | 224 acre-ft |
| Normal Storage | 104 acre-ft |
| Surface Area | 14 acres |
| Drainage Area | 0 sq mi |
| Max Discharge | 4,060 cfs |
| Year Completed | 1970 (56 years old) |
| NID ID | CO00511 |
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
CITY OF WALSENBURG
Local Government
Nearby Dams
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High Hazard 24 ftSharps Orchard
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Low Hazard 22 ftLajoya
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Low Hazard 18 ftFrequently Asked Questions
What is the hazard classification of Alessi Flood Control Dam?
Alessi Flood Control Dam 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 Alessi Flood Control Dam?
Alessi Flood Control Dam is owned by CITY OF WALSENBURG (Local Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Alessi Flood Control Dam built?
Alessi Flood Control Dam was completed in 1970, making it 56 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 Alessi Flood Control Dam?
Alessi Flood Control Dam 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 Alessi Flood Control Dam?
Alessi Flood Control Dam has a dam height of 29 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 Alessi Flood Control Dam last inspected?
Alessi Flood Control Dam was last inspected on June 21, 2022. Inspection dates indicate when a formal review occurred, not the results of that inspection.