Alden Milldam
Key Takeaway
Alden Milldam is classified as low hazard in Iowa. It was completed in 1932 and is 94 years old. Its primary use is recreation.
Physical Details
| Dam Height | 11 ft (taller than 2.5% in IA) |
| Dam Length | 375 ft |
| Dam Type | Gravity |
| Max Storage | 762 acre-ft |
| Normal Storage | 762 acre-ft |
| Surface Area | 140 acres |
| Drainage Area | 638 sq mi |
| Max Discharge | 0 cfs |
| Year Completed | 1932 (94 years old) |
| NID ID | IA01268 |
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 Alden
Local Government
Nearby Dams
Frequently Asked Questions
What is the hazard classification of Alden Milldam?
Alden 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 Alden Milldam?
Alden Milldam is owned by City of Alden (Local Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Alden Milldam built?
Alden Milldam was completed in 1932, making it 94 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 Alden Milldam?
Alden 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 Alden Milldam?
Alden Milldam has a dam height of 11 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 Alden Milldam last inspected?
Alden Milldam was last inspected on October 11, 1989. Inspection dates indicate when a formal review occurred, not the results of that inspection.