Nashua Milldam
Key Takeaway
Nashua Milldam is classified as low hazard in Iowa. It was completed in 1917 and is 109 years old. Its primary use is recreation.
Physical Details
| Dam Height | 20 ft (taller than 7.5% in IA) |
| Dam Length | 1,170 ft |
| Dam Type | Gravity |
| Max Storage | 5.2K acre-ft |
| Normal Storage | 3.2K acre-ft |
| Surface Area | 405 acres |
| Drainage Area | 1,113 sq mi |
| Max Discharge | 0 cfs |
| Year Completed | 1917 (109 years old) |
| Year Modified | 1990 |
| NID ID | IA01314 |
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
City of Nashua
Local Government
Nearby Dams
Frequently Asked Questions
What is the hazard classification of Nashua Milldam?
Nashua 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 Nashua Milldam?
Nashua Milldam is owned by City of Nashua (Local Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Nashua Milldam built?
Nashua Milldam was completed in 1917, making it 109 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 Nashua Milldam?
Nashua 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 Nashua Milldam?
Nashua Milldam has a dam height of 20 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 Nashua Milldam last inspected?
Nashua Milldam was last inspected on May 12, 2009. Inspection dates indicate when a formal review occurred, not the results of that inspection.