Percy Dam
Key Takeaway
Percy Dam is classified as low hazard in South Dakota. It was completed in 1956 and is 70 years old. Its primary use is fire protection.
Physical Details
| Dam Height | 21 ft (taller than 40.7% in SD) |
| Dam Length | 700 ft |
| Dam Type | Earth |
| Max Storage | 80 acre-ft |
| Normal Storage | 55 acre-ft |
| Max Discharge | 1,240 cfs |
| Year Completed | 1956 (70 years old) |
| NID ID | SD01924 |
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
MARY PERCY
Private
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What is the hazard classification of Percy Dam?
Percy 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 Percy Dam?
Percy Dam is owned by MARY PERCY (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Percy Dam built?
Percy Dam was completed in 1956, making it 70 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 Percy Dam?
Percy Dam serves the following purposes: 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 Percy Dam?
Percy Dam has a dam height of 21 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.