Mallard Dam
Key Takeaway
Mallard Dam is classified as low hazard in South Dakota. It was completed in 1942 and is 84 years old. Its primary use is fish and wildlife pond.
Physical Details
| Dam Height | 20 ft (taller than 33.7% in SD) |
| Dam Length | 400 ft |
| Dam Type | Earth |
| Max Storage | 166 acre-ft |
| Normal Storage | 88 acre-ft |
| Max Discharge | 2,080 cfs |
| Year Completed | 1942 (84 years old) |
| NID ID | SD02331 |
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
USDA FS
Federal Government
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Low Hazard 24 ftFrequently Asked Questions
What is the hazard classification of Mallard Dam?
Mallard 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 Mallard Dam?
Mallard Dam is owned by USDA FS (Federal Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Mallard Dam built?
Mallard Dam was completed in 1942, making it 84 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 Mallard Dam?
Mallard Dam serves the following purposes: Fish And Wildlife Pond, Fire Protection, Stock, Or Small Fish Pond. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.
How tall is Mallard Dam?
Mallard Dam 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.