Upper Little Nemaha 18
Key Takeaway
Upper Little Nemaha 18 is classified as low hazard in Nebraska. It was completed in 1996 and is 30 years old. Its primary use is flood risk reduction.
Physical Details
| Dam Height | 38 ft (taller than 87.6% in NE) |
| Dam Length | 1,185 ft |
| Dam Type | Earth |
| Max Storage | 1.7K acre-ft |
| Normal Storage | 200 acre-ft |
| Surface Area | 35 acres |
| Drainage Area | 7 sq mi |
| Max Discharge | 3,798 cfs |
| Year Completed | 1996 (30 years old) |
| NID ID | NE02439 |
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
Upper Little Nemaha 17
Otoe, NE
Low Hazard 36 ftUpper Little Nemaha 31 West
Otoe, NE
Low Hazard 31 ftUpper Little Nemaha 31 East
Otoe, NE
Low Hazard 34 ftUpper Little Nemaha 5
Otoe, NE
Significant Hazard 40 ftUpper Little Nemaha 79
Lancaster, NE
Significant Hazard 38 ftEagle Lake Dam
Cass, NE
Low Hazard 18 ftUpper Little Nemaha 26
Lancaster, NE
Low Hazard 37 ftUpper Little Nemaha 8
Otoe, NE
Low Hazard 37 ftFrequently Asked Questions
What is the hazard classification of Upper Little Nemaha 18?
Upper Little Nemaha 18 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 Upper Little Nemaha 18?
Upper Little Nemaha 18 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 18 built?
Upper Little Nemaha 18 was completed in 1996, making it 30 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 18?
Upper Little Nemaha 18 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 18?
Upper Little Nemaha 18 has a dam height of 38 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 18 last inspected?
Upper Little Nemaha 18 was last inspected on June 21, 2021. Inspection dates indicate when a formal review occurred, not the results of that inspection.