Swan Creek 5a Main Tributary Sediment Dam Reservoir Report

Last Updated: December 6, 2025

The Swan Creek 5a Main Tributary Sediment Dam, located in Swanton, Nebraska, serves as a crucial structure for flood risk reduction along Swan Creek.


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Summary

Completed in 2007, this earth dam stands at 15 feet high with a hydraulic height of 14 feet and a structural height of 20 feet. Its stone core and soil foundation contribute to its stability in managing potential overflow from the 4.8 square mile drainage area it serves.

With a storage capacity of 75 acre-feet, the Swan Creek 5a Main Tributary Sediment Dam plays a vital role in mitigating flood risks in the area. Its low hazard potential and satisfactory condition assessment as of April 2019 speak to its effectiveness in protecting the surrounding community. Managed by local government authorities and regulated by the Nebraska Department of Natural Resources, this dam undergoes regular inspections to ensure its continued functionality and safety for the residents of Saline County.

The dam's strategic location in the Omaha District and its association with Congressional District 03 underscore its importance in water resource management and climate resilience efforts. As water resource and climate enthusiasts, it is essential to recognize the significant role that structures like the Swan Creek 5a Main Tributary Sediment Dam play in safeguarding communities and ecosystems from the impacts of extreme weather events and flooding.

Year Completed

2007

Dam Length

550

Dam Height

15

River Or Stream

SWAN CREEK

Primary Dam Type

Earth

Hydraulic Height

14

Drainage Area

4.8

Nid Storage

75

Structural Height

20

Hazard Potential

Low

Foundations

Soil

Nid Height

20
       
Seasonal Comparison

Weather Forecast

Dam Data Reference

Condition Assessment

Satisfactory
No 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

High
Dams 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.