Black Hawk Marsh Dam
Key Takeaway
Black Hawk Marsh Dam is classified as low hazard in Iowa. It was completed in 1994 and is 32 years old. Its primary use is recreation.
Physical Details
| Dam Height | 8 ft (taller than 0.7% in IA) |
| Dam Length | 8,150 ft |
| Dam Type | Earth |
| Max Storage | 1.2K acre-ft |
| Normal Storage | 642 acre-ft |
| Surface Area | 214 acres |
| Drainage Area | 12 sq mi |
| Max Discharge | 0 cfs |
| Year Completed | 1994 (32 years old) |
| NID ID | IA03090 |
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
Iowa Department of Natural Resources
State Government
Nearby Dams
Frequently Asked Questions
What is the hazard classification of Black Hawk Marsh Dam?
Black Hawk Marsh 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 Black Hawk Marsh Dam?
Black Hawk Marsh Dam is owned by Iowa Department of Natural Resources (State Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Black Hawk Marsh Dam built?
Black Hawk Marsh Dam was completed in 1994, making it 32 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 Black Hawk Marsh Dam?
Black Hawk Marsh Dam serves the following purposes: Recreation. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.
How tall is Black Hawk Marsh Dam?
Black Hawk Marsh Dam has a dam height of 8 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.