Coal Springs Dam
Key Takeaway
Coal Springs 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 | 31 ft (taller than 88.8% in SD) |
| Dam Length | 1,100 ft |
| Dam Type | Earth |
| Max Storage | 1.6K acre-ft |
| Normal Storage | 1.2K acre-ft |
| Max Discharge | 400 cfs |
| Year Completed | 1934 (92 years old) |
| Year Modified | 2001 |
| NID ID | SD00926 |
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
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Low Hazard 13 ftD. Dunn
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Low Hazard 21 ftR. Wolff
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Low Hazard 19 ftRichard Wolff
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Low Hazard 17 ftJ. Gebhart No.1
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Low Hazard 14 ftHarold Flatmoe
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Low Hazard 16 ftIvan Mills
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Low Hazard 22 ftFrequently Asked Questions
What is the hazard classification of Coal Springs Dam?
Coal Springs 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 Coal Springs Dam?
Coal Springs Dam is owned by S&PL (State Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Coal Springs Dam built?
Coal Springs 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 Coal Springs Dam?
Coal Springs 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 Coal Springs Dam?
Coal Springs Dam has a dam height of 31 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 Coal Springs Dam last inspected?
Coal Springs Dam was last inspected on November 11, 2018. Inspection dates indicate when a formal review occurred, not the results of that inspection.