Hay Canyon Dam
Key Takeaway
Hay Canyon Dam is classified as low hazard in South Dakota. It was completed in 1966 and is 60 years old. Its primary use is fire protection.
Physical Details
| Dam Height | 18 ft (taller than 24.1% in SD) |
| Dam Length | 800 ft |
| Dam Type | Earth |
| Max Storage | 270 acre-ft |
| Normal Storage | 150 acre-ft |
| Max Discharge | 1,500 cfs |
| Year Completed | 1966 (60 years old) |
| NID ID | SD01392 |
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
BERT THOMPSON RANCH
Private
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Low Hazard 21 ftFrequently Asked Questions
What is the hazard classification of Hay Canyon Dam?
Hay Canyon 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 Hay Canyon Dam?
Hay Canyon Dam is owned by BERT THOMPSON RANCH (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Hay Canyon Dam built?
Hay Canyon Dam was completed in 1966, making it 60 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 Hay Canyon Dam?
Hay Canyon 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 Hay Canyon Dam?
Hay Canyon Dam has a dam height of 18 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.