Union Creek No 9
Key Takeaway
Union Creek No 9 is classified as low hazard in South Dakota. It was completed in 1978 and is 48 years old. Its primary use is grade stabilization.
Physical Details
| Dam Height | 37 ft (taller than 95.4% in SD) |
| Dam Length | 881 ft |
| Dam Type | Earth |
| Max Storage | 329 acre-ft |
| Normal Storage | 204 acre-ft |
| Surface Area | 12 acres |
| Drainage Area | 2 sq mi |
| Max Discharge | 1,160 cfs |
| Year Completed | 1978 (48 years old) |
| NID ID | SD02285 |
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
UNION CK WATERSHED DIST.
Local Government
Nearby Dams
Union Creek No 12
Union, SD
Low Hazard 37 ftUnion Creek No 48
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Low Hazard 37 ftUnion Creek No 6
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Low Hazard 39 ftUnion Creek No. 5
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Low Hazard 38 ftBrule Creek No. 36
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Low Hazard 30 ftGant Creek Watershed Site D-3
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Low Hazard 36 ftBrule Creek No. 26
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Low Hazard 29 ftGant Creek Watershed Site D-5
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Low Hazard 47 ftFrequently Asked Questions
What is the hazard classification of Union Creek No 9?
Union Creek No 9 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 Union Creek No 9?
Union Creek No 9 is owned by UNION CK WATERSHED DIST. (Local Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Union Creek No 9 built?
Union Creek No 9 was completed in 1978, making it 48 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 Union Creek No 9?
Union Creek No 9 serves the following purposes: Grade Stabilization. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.
How tall is Union Creek No 9?
Union Creek No 9 has a dam height of 37 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.