South Branch 1-B Reservoir Report
Last Updated: December 5, 2025
South Branch 1-B is a key flood risk reduction structure located in Talmage, Nebraska, along the Muddy Creek.
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Summary
Built in 1995 by the USDA NRCS, this earth dam stands at a height of 44 feet and has a storage capacity of 1175 acre-feet. With a satisfactory condition assessment and low hazard potential, South Branch 1-B plays a crucial role in mitigating flood risks in the region.
Owned and regulated by the local government with oversight from the Nebraska Department of Natural Resources, South Branch 1-B undergoes regular inspections to ensure its structural integrity. The dam's primary purpose is flood risk reduction, with a drainage area of 4 square miles and a maximum discharge capacity of 817 cubic feet per second. With a surface area of 39 acres, this dam provides essential protection to the surrounding area against potential flooding events.
Located in Otoe County, South Branch 1-B is a vital infrastructure designed to safeguard the community from the impacts of extreme weather events. With its stone core and soil foundation, this earth dam serves as a critical asset in managing water resources and climate challenges in the region.
Year Completed |
1995 |
Dam Length |
1408 |
Dam Height |
44 |
River Or Stream |
MUDDY CREEK |
Primary Dam Type |
Earth |
Surface Area |
39 |
Hydraulic Height |
43 |
Drainage Area |
4 |
Nid Storage |
1175 |
Structural Height |
45 |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
45 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
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.
South Branch 1-B