Don Alt Dam
Key Takeaway
Don Alt Dam is classified as low hazard in Nebraska. It was completed in 1969 and is 57 years old. Its primary use is flood risk reduction.
Physical Details
| Dam Height | 19 ft (taller than 24.6% in NE) |
| Dam Length | 610 ft |
| Dam Type | Earth |
| Max Storage | 111 acre-ft |
| Normal Storage | 15 acre-ft |
| Surface Area | 5 acres |
| Drainage Area | 1 sq mi |
| Max Discharge | 673 cfs |
| Year Completed | 1969 (57 years old) |
| NID ID | NE00012 |
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
Polk County
Local Government
Nearby Dams
Thelen Dam
Polk, NE
Low Hazard 17 ftTorell Dam
Polk, NE
Low Hazard 17 ftMiller Dam 1653
Polk, NE
Low Hazard 16 ftDouble Dutch Dairy Lagoon Dam (3 Cells)
Polk, NE
Low Hazard 11 ftTeegerstrom Dam
Polk, NE
Low Hazard 17 ftMoore Dam 2
Butler, NE
Low Hazard 18 ftMentink Dam 1591
Polk, NE
Low Hazard 27 ftDey Dam
York, NE
Low Hazard 17 ftFrequently Asked Questions
What is the hazard classification of Don Alt Dam?
Don Alt 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 Don Alt Dam?
Don Alt Dam is owned by Polk County (Local Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Don Alt Dam built?
Don Alt Dam was completed in 1969, making it 57 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 Don Alt Dam?
Don Alt Dam serves the following purposes: Flood Risk Reduction. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.
How tall is Don Alt Dam?
Don Alt 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 Don Alt Dam last inspected?
Don Alt Dam was last inspected on June 21, 2022. Inspection dates indicate when a formal review occurred, not the results of that inspection.