Jasper County Roadgrade Dam 15-81-20
Key Takeaway
Jasper County Roadgrade Dam 15-81-20 is classified as low hazard in Iowa. It was completed in 2005 and is 21 years old. Its primary use is grade stabilization.
Physical Details
| Dam Height | 38 ft (taller than 80.1% in IA) |
| Dam Length | 830 ft |
| Dam Type | Earth |
| Max Storage | 480 acre-ft |
| Normal Storage | 177 acre-ft |
| Surface Area | 21 acres |
| Drainage Area | 1 sq mi |
| Max Discharge | 0 cfs |
| Year Completed | 2005 (21 years old) |
| NID ID | IA03690 |
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
Jasper County Board of Supervisors
Local Government
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Low Hazard 25 ftFrequently Asked Questions
What is the hazard classification of Jasper County Roadgrade Dam 15-81-20?
Jasper County Roadgrade Dam 15-81-20 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 Jasper County Roadgrade Dam 15-81-20?
Jasper County Roadgrade Dam 15-81-20 is owned by Jasper County Board of Supervisors (Local Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Jasper County Roadgrade Dam 15-81-20 built?
Jasper County Roadgrade Dam 15-81-20 was completed in 2005, making it 21 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 Jasper County Roadgrade Dam 15-81-20?
Jasper County Roadgrade Dam 15-81-20 serves the following purposes: Grade Stabilization. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.
How tall is Jasper County Roadgrade Dam 15-81-20?
Jasper County Roadgrade Dam 15-81-20 has a dam height of 38 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.