South Sandstone Creek Dam
Key Takeaway
South Sandstone Creek Dam is classified as significant hazard in Montana. It was completed in 1975 and is 51 years old. Its primary use is irrigation. Significant hazard means failure could cause economic or environmental damage. Learn more.
Physical Details
| Dam Height | 47 ft (taller than 96.5% in MT) |
| Dam Length | 2,908 ft |
| Dam Type | Earth |
| Max Storage | 1.9K acre-ft |
| Normal Storage | 930 acre-ft |
| Surface Area | 119 acres |
| Drainage Area | 48 sq mi |
| Max Discharge | 2,050 cfs |
| Year Completed | 1975 (51 years old) |
| NID ID | MT02005 |
Safety Information
No probable loss of human life, but can cause economic loss, environmental damage, or disruption of lifeline facilities.
Hazard potential describes downstream consequences of failure, not the dam's current condition. What does this mean?
Ownership
STATE OF MONTANA, D.F.W.P.
State Government
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Low Hazard 12 ftFrequently Asked Questions
What is the hazard classification of South Sandstone Creek Dam?
South Sandstone Creek Dam is classified as Significant Hazard. No probable loss of human life, but can cause economic loss, environmental damage, or disruption of lifeline facilities. This classification refers to the potential downstream consequences of a failure, not the dam's current structural condition.
Who owns and operates South Sandstone Creek Dam?
South Sandstone Creek Dam is owned by STATE OF MONTANA, D.F.W.P. (State Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was South Sandstone Creek Dam built?
South Sandstone Creek Dam was completed in 1975, making it 51 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 South Sandstone Creek Dam?
South Sandstone Creek Dam serves the following purposes: Irrigation. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.
How tall is South Sandstone Creek Dam?
South Sandstone Creek Dam has a dam height of 47 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 South Sandstone Creek Dam last inspected?
South Sandstone Creek Dam was last inspected on June 8, 2022. Inspection dates indicate when a formal review occurred, not the results of that inspection.