Idot Roadgrade Dam 7-88-47
Key Takeaway
Idot Roadgrade Dam 7-88-47 is classified as low hazard in Iowa. It was completed in 1979 and is 47 years old. Its primary use is fire protection.
Physical Details
| Dam Height | 25 ft (taller than 19.3% in IA) |
| Dam Length | 328 ft |
| Dam Type | Earth |
| Max Storage | 117 acre-ft |
| Normal Storage | 23 acre-ft |
| Surface Area | 4 acres |
| Drainage Area | 1 sq mi |
| Max Discharge | 0 cfs |
| Year Completed | 1979 (47 years old) |
| NID ID | IA02135 |
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
Iowa Department of Transportation
State Government
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High Hazard 51 ftFrequently Asked Questions
What is the hazard classification of Idot Roadgrade Dam 7-88-47?
Idot Roadgrade Dam 7-88-47 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 Idot Roadgrade Dam 7-88-47?
Idot Roadgrade Dam 7-88-47 is owned by Iowa Department of Transportation (State Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Idot Roadgrade Dam 7-88-47 built?
Idot Roadgrade Dam 7-88-47 was completed in 1979, making it 47 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 Idot Roadgrade Dam 7-88-47?
Idot Roadgrade Dam 7-88-47 serves the following purposes: Fire Protection, Stock, Or Small Fish Pond, Other. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.
How tall is Idot Roadgrade Dam 7-88-47?
Idot Roadgrade Dam 7-88-47 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 Idot Roadgrade Dam 7-88-47 last inspected?
Idot Roadgrade Dam 7-88-47 was last inspected on November 12, 1986. Inspection dates indicate when a formal review occurred, not the results of that inspection.