Upper Little Nemaha 23
Key Takeaway
Upper Little Nemaha 23 is classified as significant hazard in Nebraska. It was completed in 2002 and is 24 years old. Its primary use is flood risk reduction. Significant hazard means failure could cause economic or environmental damage. Learn more.
Physical Details
| Dam Height | 51 ft (taller than 96.8% in NE) |
| Dam Length | 1,735 ft |
| Dam Type | Earth |
| Max Storage | 3.2K acre-ft |
| Normal Storage | 269 acre-ft |
| Surface Area | 42 acres |
| Drainage Area | 6 sq mi |
| Max Discharge | 15,009 cfs |
| Year Completed | 2002 (24 years old) |
| NID ID | NE02645 |
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
Nemaha Natural Resources District
Local Government
Nearby Dams
Upper Little Nemaha 21
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High Hazard 51 ftWiedeman Dam
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Low Hazard 18 ftKuhn Dam
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Low Hazard 18 ftUpper Little Nemaha 25
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Low Hazard 44 ftMueller Dam
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Low Hazard 25 ftUpper Salt Creek 8-B
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Low Hazard 27 ftUpper Little Nemaha 26
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Low Hazard 37 ftUpper Salt Creek 38-3
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Low Hazard 22 ftFrequently Asked Questions
What is the hazard classification of Upper Little Nemaha 23?
Upper Little Nemaha 23 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 Upper Little Nemaha 23?
Upper Little Nemaha 23 is owned by Nemaha Natural Resources District (Local Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Upper Little Nemaha 23 built?
Upper Little Nemaha 23 was completed in 2002, making it 24 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 Upper Little Nemaha 23?
Upper Little Nemaha 23 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 Upper Little Nemaha 23?
Upper Little Nemaha 23 has a dam height of 51 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 Upper Little Nemaha 23 last inspected?
Upper Little Nemaha 23 was last inspected on April 19, 2023. Inspection dates indicate when a formal review occurred, not the results of that inspection.