Johnson Dam (Washington Co)
Key Takeaway
Johnson Dam (Washington Co) 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 | 25 ft (taller than 19.3% in IA) |
| Dam Length | 500 ft |
| Dam Type | Earth |
| Max Storage | 159 acre-ft |
| Normal Storage | 0 acre-ft |
| Surface Area | 12 acres |
| Drainage Area | 0 sq mi |
| Max Discharge | 34 cfs |
| Year Completed | 2005 (21 years old) |
| NID ID | IA04058 |
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
Jackie Johnson
Private
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Low Hazard 25 ftFrequently Asked Questions
What is the hazard classification of Johnson Dam (Washington Co)?
Johnson Dam (Washington Co) 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 Johnson Dam (Washington Co)?
Johnson Dam (Washington Co) is owned by Jackie Johnson (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Johnson Dam (Washington Co) built?
Johnson Dam (Washington Co) 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 Johnson Dam (Washington Co)?
Johnson Dam (Washington Co) serves the following purposes: Grade Stabilization, Fish And Wildlife Pond. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.
How tall is Johnson Dam (Washington Co)?
Johnson Dam (Washington Co) 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.