Blair #2
Key Takeaway
Blair #2 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 | 17 ft (taller than 20.2% in SD) |
| Dam Length | 150 ft |
| Dam Type | Earth |
| Max Storage | 75 acre-ft |
| Normal Storage | 45 acre-ft |
| Max Discharge | 625 cfs |
| Year Completed | 1956 (70 years old) |
| NID ID | SD01493 |
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
BOB BLAIR
Private
Nearby Dams
Blair #1
Haakon, SD
Low Hazard 40 ftBlair #3
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Low Hazard 30 ftDreis Bros
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Significant Hazard 20 ftHanson Dam
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Low Hazard 21 ftEarl Hanrahan
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Low Hazard 12 ftFrequently Asked Questions
What is the hazard classification of Blair #2?
Blair #2 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 Blair #2?
Blair #2 is owned by BOB BLAIR (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Blair #2 built?
Blair #2 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 Blair #2?
Blair #2 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 Blair #2?
Blair #2 has a dam height of 17 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.