Marty Mission (Silted In)
Key Takeaway
Marty Mission (Silted In) is classified as low hazard in South Dakota. It was completed in 1938 and is 88 years old. Its primary use is flood risk reduction.
Physical Details
| Dam Height | 65 ft (taller than 99.3% in SD) |
| Dam Length | 750 ft |
| Dam Type | Earth |
| Max Storage | 150 acre-ft |
| Normal Storage | 64 acre-ft |
| Max Discharge | 1,450 cfs |
| Year Completed | 1938 (88 years old) |
| NID ID | SD00223 |
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
Frequently Asked Questions
What is the hazard classification of Marty Mission (Silted In)?
Marty Mission (Silted In) 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 Marty Mission (Silted In)?
Marty Mission (Silted In) is owned by S&PL (State Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Marty Mission (Silted In) built?
Marty Mission (Silted In) 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 Marty Mission (Silted In)?
Marty Mission (Silted In) serves the following purposes: Flood Risk Reduction. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.
How tall is Marty Mission (Silted In)?
Marty Mission (Silted In) has a dam height of 65 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 Marty Mission (Silted In) last inspected?
Marty Mission (Silted In) was last inspected on August 19, 2020. Inspection dates indicate when a formal review occurred, not the results of that inspection.