Flat Creek Dam
Key Takeaway
Flat Creek Dam is classified as low hazard in South Dakota. It was completed in 1934 and is 92 years old. Its primary use is recreation.
Physical Details
| Dam Height | 35 ft (taller than 94% in SD) |
| Dam Length | 1,673 ft |
| Dam Type | Earth |
| Max Storage | 4.6K acre-ft |
| Normal Storage | 2.3K acre-ft |
| Surface Area | 173 acres |
| Drainage Area | 21 sq mi |
| Max Discharge | 14,482 cfs |
| Year Completed | 1934 (92 years old) |
| Year Modified | 1999 |
| NID ID | SD00922 |
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
S&PL
State Government
Nearby Dams
Shadehill
Perkins, SD
High Hazard 145 ftWd Crockett
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Low Hazard 19 ftPasture 9 Dam
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Low Hazard 22 ftRobert Kressly
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Low Hazard 27 ftRobert Kressly
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Low Hazard 20 ftPasture 8
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Low Hazard 24 ftWm T Malloy
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Low Hazard 22 ftRobinson Dam
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Low Hazard 18 ftFrequently Asked Questions
What is the hazard classification of Flat Creek Dam?
Flat Creek 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 Flat Creek Dam?
Flat Creek Dam is owned by S&PL (State Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Flat Creek Dam built?
Flat Creek Dam was completed in 1934, making it 92 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 Flat Creek Dam?
Flat Creek 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 Flat Creek Dam?
Flat Creek Dam has a dam height of 35 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 Flat Creek Dam last inspected?
Flat Creek Dam was last inspected on November 7, 2018. Inspection dates indicate when a formal review occurred, not the results of that inspection.