Long Branch N-5 Reservoir Report
Nearby: Long Branch 70 Long Branch 77
Last Updated: December 6, 2025
Long Branch N-5, located in Humboldt, Nebraska, is a key structure in the management of the Long Br Big Nemaha River.
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Summary
Designed by USDA NRCS and completed in 1984, this earth dam stands at a height of 34 feet and has a capacity of 214 acre-feet, providing flood risk reduction and other essential purposes. The dam has a satisfactory condition assessment and low hazard potential, with regular inspections ensuring its continued effectiveness.
Managed by the Nebraska Department of Natural Resources, Long Branch N-5 is regulated, permitted, and inspected by state authorities to meet strict safety and operational standards. With a drainage area of 0.8 square miles and a maximum discharge of 265 cubic feet per second, this structure plays a crucial role in protecting the local community and environment from potential flooding events. Its location in Nemaha County, Nebraska, highlights its significance in water resource management and climate resilience efforts in the region.
As part of the Omaha District, Long Branch N-5 is owned and operated by the local government, with the Natural Resources Conservation Service overseeing its design. With a strong commitment to safety and environmental protection, this dam serves as a vital component of the area's infrastructure, contributing to the overall water resource management strategy. Climate enthusiasts and water resource professionals alike recognize the importance of structures like Long Branch N-5 in safeguarding communities and ecosystems from the impacts of extreme weather events and ensuring sustainable water management practices for the future.
Year Completed |
1984 |
Dam Length |
718 |
Dam Height |
34 |
River Or Stream |
LONG BR BIG NEMAHA RIVER |
Primary Dam Type |
Earth |
Surface Area |
9 |
Hydraulic Height |
31 |
Drainage Area |
0.8 |
Nid Storage |
214 |
Structural Height |
40 |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
40 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
North Fork Big Nemaha River At Humboldt
|
67cfs |
Little Nemaha River At Auburn
|
82cfs |
Turkey C Nr Seneca
|
15cfs |
Big Nemaha River At Falls City
|
310cfs |
Missouri River At Nebraska City
|
22500cfs |
Tarkio River At Fairfax Mo
|
88cfs |
Dam Data Reference
Condition Assessment
SatisfactoryNo existing or potential dam safety deficiencies are recognized. Acceptable performance is expected under all loading conditions (static, hydrologic, seismic) in accordance with the minimum applicable state or federal regulatory criteria or tolerable risk guidelines.
Fair
No existing dam safety deficiencies are recognized for normal operating conditions. Rare or extreme hydrologic and/or seismic events may result in a dam safety deficiency. Risk may be in the range to take further action. Note: Rare or extreme event is defined by the regulatory agency based on their minimum
Poor A dam safety deficiency is recognized for normal operating conditions which may realistically occur. Remedial action is necessary. POOR may also be used when uncertainties exist as to critical analysis parameters which identify a potential dam safety deficiency. Investigations and studies are necessary.
Unsatisfactory
A dam safety deficiency is recognized that requires immediate or emergency remedial action for problem resolution.
Not Rated
The dam has not been inspected, is not under state or federal jurisdiction, or has been inspected but, for whatever reason, has not been rated.
Not Available
Dams for which the condition assessment is restricted to approved government users.
Hazard Potential Classification
HighDams assigned the high hazard potential classification are those where failure or mis-operation will probably cause loss of human life.
Significant
Dams assigned the significant hazard potential classification are those dams where failure or mis-operation results in no probable loss of human life but can cause economic loss, environment damage, disruption of lifeline facilities, or impact other concerns. Significant hazard potential classification dams are often located in predominantly rural or agricultural areas but could be in areas with population and significant infrastructure.
Low
Dams assigned the low hazard potential classification are those where failure or mis-operation results in no probable loss of human life and low economic and/or environmental losses. Losses are principally limited to the owner's property.
Undetermined
Dams for which a downstream hazard potential has not been designated or is not provided.
Not Available
Dams for which the downstream hazard potential is restricted to approved government users.
Long Branch N-5