Mandernach & Carlson No. 9
Key Takeaway
Mandernach & Carlson No. 9 is classified as low hazard in South Dakota. It was completed in 1949 and is 77 years old. Its primary use is fire protection.
Physical Details
| Dam Height | 23 ft (taller than 49.8% in SD) |
| Dam Length | 475 ft |
| Dam Type | Earth |
| Max Storage | 189 acre-ft |
| Normal Storage | 65 acre-ft |
| Max Discharge | 1,220 cfs |
| Year Completed | 1949 (77 years old) |
| NID ID | SD02100 |
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
MANDERNACH & CARLSON
Private
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What is the hazard classification of Mandernach & Carlson No. 9?
Mandernach & Carlson No. 9 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 Mandernach & Carlson No. 9?
Mandernach & Carlson No. 9 is owned by MANDERNACH & CARLSON (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Mandernach & Carlson No. 9 built?
Mandernach & Carlson No. 9 was completed in 1949, making it 77 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 Mandernach & Carlson No. 9?
Mandernach & Carlson No. 9 serves the following purposes: Fire Protection, Stock, Or Small Fish Pond. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.
How tall is Mandernach & Carlson No. 9?
Mandernach & Carlson No. 9 has a dam height of 23 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.