Afton Reservoir Dam
Key Takeaway
Afton Reservoir Dam is classified as significant hazard in Iowa. It was completed in 1936 and is 90 years old. Its primary use is water supply. Significant hazard means failure could cause economic or environmental damage. Learn more.
Physical Details
| Dam Height | 51 ft (taller than 96% in IA) |
| Dam Length | 800 ft |
| Dam Type | Earth |
| Max Storage | 470 acre-ft |
| Normal Storage | 300 acre-ft |
| Surface Area | 15 acres |
| Drainage Area | 0 sq mi |
| Max Discharge | 0 cfs |
| Year Completed | 1936 (90 years old) |
| NID ID | IA01378 |
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
City of Afton
Local Government
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Low Hazard 43 ftFrequently Asked Questions
What is the hazard classification of Afton Reservoir Dam?
Afton Reservoir Dam 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 Afton Reservoir Dam?
Afton Reservoir Dam is owned by City of Afton (Local Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Afton Reservoir Dam built?
Afton Reservoir Dam was completed in 1936, making it 90 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 Afton Reservoir Dam?
Afton Reservoir Dam 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 Afton Reservoir Dam?
Afton Reservoir Dam 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 Afton Reservoir Dam last inspected?
Afton Reservoir Dam was last inspected on May 27, 2016. Inspection dates indicate when a formal review occurred, not the results of that inspection.