Mitchell Mill Dam
Key Takeaway
Mitchell Mill Dam is classified as low hazard in Iowa. It was completed in 1925 and is 101 years old. Its primary use is hydroelectric.
Physical Details
| Dam Height | 19 ft (taller than 6.5% in IA) |
| Dam Length | 590 ft |
| Dam Type | Buttress |
| Normal Storage | 1.5K acre-ft |
| Surface Area | 120 acres |
| Drainage Area | 826 sq mi |
| Max Discharge | 46,500 cfs |
| Year Completed | 1925 (101 years old) |
| NID ID | IA01312 |
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
Mitchell County Conservation Board
Local Government
Nearby Dams
Frequently Asked Questions
What is the hazard classification of Mitchell Mill Dam?
Mitchell Mill 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 Mitchell Mill Dam?
Mitchell Mill Dam is owned by Mitchell County Conservation Board (Local Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Mitchell Mill Dam built?
Mitchell Mill Dam was completed in 1925, making it 101 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 Mitchell Mill Dam?
Mitchell Mill Dam serves the following purposes: Hydroelectric, Recreation. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.
How tall is Mitchell Mill Dam?
Mitchell Mill Dam has a dam height of 19 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.
When was Mitchell Mill Dam last inspected?
Mitchell Mill Dam was last inspected on September 8, 2022. Inspection dates indicate when a formal review occurred, not the results of that inspection.