South Branch 11
Key Takeaway
South Branch 11 is classified as low hazard in Nebraska. It was completed in 1987 and is 39 years old. Its primary use is flood risk reduction.
Physical Details
| Dam Height | 43 ft (taller than 93% in NE) |
| Dam Length | 1,185 ft |
| Dam Type | Earth |
| Max Storage | 863 acre-ft |
| Normal Storage | 163 acre-ft |
| Surface Area | 28 acres |
| Drainage Area | 3 sq mi |
| Max Discharge | 715 cfs |
| Year Completed | 1987 (39 years old) |
| NID ID | NE02250 |
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
Nemaha Natural Resources District
Local Government
Nearby Dams
Little Nemaha 10
Otoe, NE
Low Hazard 41 ftSouth Branch 8
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Low Hazard 41 ftSouth Branch 7
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Low Hazard 48 ftSouth Branch 58
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Low Hazard 28 ftSouth Branch 45
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Low Hazard 34 ftSouth Branch 3-3
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Low Hazard 29 ftSouth Branch 52
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Low Hazard 37 ftSouth Branch 1-B
Otoe, NE
Low Hazard 44 ftFrequently Asked Questions
What is the hazard classification of South Branch 11?
South Branch 11 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 South Branch 11?
South Branch 11 is owned by Nemaha Natural Resources District (Local Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was South Branch 11 built?
South Branch 11 was completed in 1987, making it 39 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 Branch 11?
South Branch 11 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 South Branch 11?
South Branch 11 has a dam height of 43 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 Branch 11 last inspected?
South Branch 11 was last inspected on June 9, 2020. Inspection dates indicate when a formal review occurred, not the results of that inspection.