Old Reservoir Dam
Key Takeaway
Old Reservoir Dam is classified as low hazard in Iowa. It was completed in 1920 and is 106 years old. Its primary use is water supply.
Physical Details
| Dam Height | 25 ft (taller than 19.3% in IA) |
| Dam Length | 500 ft |
| Dam Type | Earth |
| Max Storage | 147 acre-ft |
| Normal Storage | 94 acre-ft |
| Surface Area | 12 acres |
| Drainage Area | 0 sq mi |
| Max Discharge | 0 cfs |
| Year Completed | 1920 (106 years old) |
| NID ID | IA01369 |
Safety Information
No probable loss of human life and low economic/environmental losses expected.
Hazard potential describes downstream consequences of failure, not the dam's current condition. What does this mean?
Ownership
City of Mounty Ayr
Local Government
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Low Hazard 31 ftFrequently Asked Questions
What is the hazard classification of Old Reservoir Dam?
Old Reservoir Dam is classified as Low Hazard. No probable loss of human life and low economic/environmental losses expected. This classification refers to the potential downstream consequences of a failure, not the dam's current structural condition.
Who owns and operates Old Reservoir Dam?
Old Reservoir Dam is owned by City of Mounty Ayr (Local Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Old Reservoir Dam built?
Old Reservoir Dam was completed in 1920, making it 106 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 Old Reservoir Dam?
Old Reservoir Dam serves the following purposes: Water Supply, Recreation. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.
How tall is Old Reservoir Dam?
Old Reservoir Dam has a dam height of 25 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 Old Reservoir Dam last inspected?
Old Reservoir Dam was last inspected on May 4, 1988. Inspection dates indicate when a formal review occurred, not the results of that inspection.