Mass Dam
Key Takeaway
Mass Dam is classified as low hazard in Iowa. It was completed in 1959 and is 67 years old. Its primary use is fire protection.
Physical Details
| Dam Height | 28 ft (taller than 36.9% in IA) |
| Dam Length | 307 ft |
| Dam Type | Earth |
| Max Storage | 41 acre-ft |
| Normal Storage | 21 acre-ft |
| Surface Area | 3 acres |
| Drainage Area | 0 sq mi |
| Max Discharge | 0 cfs |
| Year Completed | 1959 (67 years old) |
| NID ID | IA00697 |
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
Otha Mass
Private
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What is the hazard classification of Mass Dam?
Mass 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 Mass Dam?
Mass Dam is owned by Otha Mass (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Mass Dam built?
Mass Dam was completed in 1959, making it 67 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 Mass Dam?
Mass Dam serves the following purposes: Fire Protection, Stock, Or Small Fish Pond. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.
How tall is Mass Dam?
Mass Dam has a dam height of 28 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 Mass Dam last inspected?
Mass Dam was last inspected on November 5, 1964. Inspection dates indicate when a formal review occurred, not the results of that inspection.