Hawley Dam
Key Takeaway
Hawley Dam is classified as low hazard in Iowa. It was completed in 2009 and is 17 years old. Its primary use is flood risk reduction.
Physical Details
| Dam Height | 30 ft (taller than 48.2% in IA) |
| Dam Length | 405 ft |
| Dam Type | Earth |
| Max Storage | 39 acre-ft |
| Normal Storage | 15 acre-ft |
| Surface Area | 3 acres |
| Drainage Area | 0 sq mi |
| Max Discharge | 0 cfs |
| Year Completed | 2009 (17 years old) |
| NID ID | IA03937 |
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
Frank Hawley
Private
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Low Hazard 28 ftFrequently Asked Questions
What is the hazard classification of Hawley Dam?
Hawley Dam 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 Hawley Dam?
Hawley Dam is owned by Frank Hawley (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Hawley Dam built?
Hawley Dam was completed in 2009, making it 17 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 Hawley Dam?
Hawley Dam serves the following purposes: Flood Risk Reduction, Grade Stabilization. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.
How tall is Hawley Dam?
Hawley Dam has a dam height of 30 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.