Wilson Creek 12-25 Reservoir Report

Last Updated: December 6, 2025

Wilson Creek 12-25, located in Cass, Nebraska, is a local government-owned earth dam completed in 1963 by the USDA NRCS.


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Summary

This structure serves multiple purposes, including flood risk reduction, with a primary purpose of "Other." The dam stands at a height of 25 feet with a hydraulic height of 24 feet and a structural height of 30 feet, providing a normal storage capacity of 33 acre-feet and a NID storage of 122 acre-feet. With a low hazard potential and satisfactory condition assessment as of April 2019, Wilson Creek 12-25 plays a crucial role in managing water resources in the area.

Situated on the TR-N FK LITTLE NEMAHA RIVER, this dam covers a surface area of 8 acres and has a drainage area of 0.7 square miles. Managed by the NE DNR, the dam is inspected every five years to ensure its structural integrity and compliance with state regulations. In the event of an emergency, the dam's Emergency Action Plan (EAP) status and risk assessment measures are currently not available, suggesting a potential area for improvement in the management of this vital water resource infrastructure.

With a congressional representative of Jeff Fortenberry (R) and oversight from the Natural Resources Conservation Service, Wilson Creek 12-25 stands as a key component in the water resource and climate management of the region. As water resource and climate enthusiasts continue to monitor and assess the impact of dams like Wilson Creek 12-25 on the local ecosystem, efforts to enhance emergency preparedness and risk assessment measures will be essential in ensuring the continued safety and efficiency of this critical infrastructure.

Year Completed

1963

Dam Length

600

Dam Height

25

River Or Stream

TR-N FK LITTLE NEMAHA RIVER

Primary Dam Type

Earth

Surface Area

8

Hydraulic Height

24

Drainage Area

0.7

Nid Storage

122

Structural Height

30

Hazard Potential

Low

Foundations

Soil

Nid Height

30
       
Seasonal Comparison

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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.