Des Moines County Roadgrade Dam 18-70-2
Key Takeaway
Des Moines County Roadgrade Dam 18-70-2 is classified as low hazard in Iowa. It was completed in 1987 and is 39 years old. Its primary use is irrigation.
Physical Details
| Dam Height | 84 ft (taller than 99.8% in IA) |
| Dam Length | 400 ft |
| Dam Type | Earth |
| Max Storage | 244 acre-ft |
| Normal Storage | 152 acre-ft |
| Surface Area | 8 acres |
| Drainage Area | 0 sq mi |
| Max Discharge | 0 cfs |
| Year Completed | 1987 (39 years old) |
| NID ID | IA02478 |
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
Des Moines County Board of Supervisors
Local Government
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Low Hazard 40 ftFrequently Asked Questions
What is the hazard classification of Des Moines County Roadgrade Dam 18-70-2?
Des Moines County Roadgrade Dam 18-70-2 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 Des Moines County Roadgrade Dam 18-70-2?
Des Moines County Roadgrade Dam 18-70-2 is owned by Des Moines County Board of Supervisors (Local Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Des Moines County Roadgrade Dam 18-70-2 built?
Des Moines County Roadgrade Dam 18-70-2 was completed in 1987, making it 39 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 Des Moines County Roadgrade Dam 18-70-2?
Des Moines County Roadgrade Dam 18-70-2 serves the following purposes: Irrigation, Other. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.
How tall is Des Moines County Roadgrade Dam 18-70-2?
Des Moines County Roadgrade Dam 18-70-2 has a dam height of 84 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.