Monticello Milldam
Key Takeaway
Monticello Milldam is classified as low hazard in Iowa. It was completed in 1914 and is 112 years old. Its primary use is recreation.
Physical Details
| Dam Height | 12 ft (taller than 3.1% in IA) |
| Dam Length | 1,199 ft |
| Dam Type | Gravity |
| Max Storage | 4.2K acre-ft |
| Normal Storage | 4.2K acre-ft |
| Surface Area | 700 acres |
| Drainage Area | 657 sq mi |
| Max Discharge | 0 cfs |
| Year Completed | 1914 (112 years old) |
| NID ID | IA01313 |
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
Jones County Conservation Board
Local Government
Nearby Dams
Frequently Asked Questions
What is the hazard classification of Monticello Milldam?
Monticello Milldam 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 Monticello Milldam?
Monticello Milldam is owned by Jones County Conservation Board (Local Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Monticello Milldam built?
Monticello Milldam was completed in 1914, making it 112 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 Monticello Milldam?
Monticello Milldam 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 Monticello Milldam?
Monticello Milldam has a dam height of 12 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 Monticello Milldam last inspected?
Monticello Milldam was last inspected on September 28, 1989. Inspection dates indicate when a formal review occurred, not the results of that inspection.