Long Dam
Key Takeaway
Long Dam is classified as low hazard in Iowa. It was completed in 1967 and is 59 years old. Its primary use is fire protection.
Physical Details
| Dam Height | 41 ft (taller than 86.2% in IA) |
| Dam Length | 317 ft |
| Dam Type | Earth |
| Max Storage | 49 acre-ft |
| Normal Storage | 41 acre-ft |
| Surface Area | 3 acres |
| Drainage Area | 0 sq mi |
| Max Discharge | 0 cfs |
| Year Completed | 1967 (59 years old) |
| NID ID | IA01128 |
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
John W Long
Private
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Low Hazard 25 ftFrequently Asked Questions
What is the hazard classification of Long Dam?
Long 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 Long Dam?
Long Dam is owned by John W Long (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Long Dam built?
Long Dam was completed in 1967, making it 59 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 Long Dam?
Long 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 Long Dam?
Long Dam has a dam height of 41 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 Long Dam last inspected?
Long Dam was last inspected on July 20, 1977. Inspection dates indicate when a formal review occurred, not the results of that inspection.