Glad Valley
Key Takeaway
Glad Valley is classified as low hazard in South Dakota. It was completed in 1938 and is 88 years old. Its primary use is recreation.
Physical Details
| Dam Height | 18 ft (taller than 24.1% in SD) |
| Dam Length | 800 ft |
| Dam Type | Earth |
| Max Storage | 1.1K acre-ft |
| Normal Storage | 308 acre-ft |
| Max Discharge | 1,757 cfs |
| Year Completed | 1938 (88 years old) |
| NID ID | SD00323 |
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
M. Matthews
Ziebach, SD
Low Hazard 26 ftM.A. Lynch
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Low Hazard 23 ftTribe No.3
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Low Hazard 20 ftL. Barnica
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Low Hazard 16 ftHulm
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Low Hazard 18 ftR. Bierman
Ziebach, SD
Low Hazard 17 ftMatter
Ziebach, SD
Low Hazard 18 ftTribe No.11
Ziebach, SD
Low Hazard 28 ftFrequently Asked Questions
What is the hazard classification of Glad Valley?
Glad Valley 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 Glad Valley?
Glad Valley is owned by S&PL (State Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Glad Valley built?
Glad Valley was completed in 1938, making it 88 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 Glad Valley?
Glad Valley 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 Glad Valley?
Glad Valley 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.
When was Glad Valley last inspected?
Glad Valley was last inspected on October 11, 2018. Inspection dates indicate when a formal review occurred, not the results of that inspection.