Jefferson County Roadgrade Dam 16-73-9
Key Takeaway
Jefferson County Roadgrade Dam 16-73-9 is classified as low hazard in Iowa. It was completed in 2002 and is 24 years old. Its primary use is grade stabilization.
Physical Details
| Dam Height | 24 ft (taller than 15.8% in IA) |
| Dam Length | 554 ft |
| Dam Type | Earth |
| Max Storage | 130 acre-ft |
| Normal Storage | 29 acre-ft |
| Surface Area | 6 acres |
| Drainage Area | 1 sq mi |
| Max Discharge | 0 cfs |
| Year Completed | 2002 (24 years old) |
| NID ID | IA03700 |
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
Jefferson County
Local Government
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What is the hazard classification of Jefferson County Roadgrade Dam 16-73-9?
Jefferson County Roadgrade Dam 16-73-9 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 Jefferson County Roadgrade Dam 16-73-9?
Jefferson County Roadgrade Dam 16-73-9 is owned by Jefferson County (Local Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Jefferson County Roadgrade Dam 16-73-9 built?
Jefferson County Roadgrade Dam 16-73-9 was completed in 2002, making it 24 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 Jefferson County Roadgrade Dam 16-73-9?
Jefferson County Roadgrade Dam 16-73-9 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 Jefferson County Roadgrade Dam 16-73-9?
Jefferson County Roadgrade Dam 16-73-9 has a dam height of 24 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.