Allerdings No.1
Key Takeaway
Allerdings No.1 is classified as low hazard in South Dakota. It was completed in 1985 and is 41 years old. Its primary use is fire protection.
Physical Details
| Dam Height | 26 ft (taller than 65.2% in SD) |
| Dam Length | 467 ft |
| Dam Type | Earth |
| Max Storage | 45 acre-ft |
| Normal Storage | 28 acre-ft |
| Surface Area | 5 acres |
| Drainage Area | 2 sq mi |
| Max Discharge | 235 cfs |
| Year Completed | 1985 (41 years old) |
| NID ID | SD02466 |
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
ALVIN ALLERDINGS
Local Government
Nearby Dams
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Low Hazard 28 ftFrequently Asked Questions
What is the hazard classification of Allerdings No.1?
Allerdings No.1 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 Allerdings No.1?
Allerdings No.1 is owned by ALVIN ALLERDINGS (Local Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Allerdings No.1 built?
Allerdings No.1 was completed in 1985, making it 41 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 Allerdings No.1?
Allerdings No.1 serves the following purposes: Fire Protection, Stock, Or Small Fish Pond, Grade Stabilization. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.
How tall is Allerdings No.1?
Allerdings No.1 has a dam height of 26 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.