Pigors Dam
Key Takeaway
Pigors Dam is classified as low hazard in South Dakota. It was completed in 1937 and is 89 years old. Its primary use is recreation.
Physical Details
| Dam Height | 20 ft (taller than 33.7% in SD) |
| Dam Length | 900 ft |
| Dam Type | Earth |
| Max Storage | 950 acre-ft |
| Normal Storage | 350 acre-ft |
| Surface Area | 58 acres |
| Drainage Area | 9 sq mi |
| Max Discharge | 5,700 cfs |
| Year Completed | 1937 (89 years old) |
| Year Modified | 2000 |
| NID ID | SD02138 |
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
GF&P
State Government
Nearby Dams
Frequently Asked Questions
What is the hazard classification of Pigors Dam?
Pigors 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 Pigors Dam?
Pigors Dam is owned by GF&P (State Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Pigors Dam built?
Pigors Dam was completed in 1937, making it 89 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 Pigors Dam?
Pigors Dam 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 Pigors Dam?
Pigors 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.
When was Pigors Dam last inspected?
Pigors Dam was last inspected on November 5, 2019. Inspection dates indicate when a formal review occurred, not the results of that inspection.