Wilson Creek 9-1 Reservoir Report

Last Updated: December 6, 2025

Wilson Creek 9-1 is a local government-owned dam located in Otoe, Nebraska, along the TR-N FK LITTLE NEMAHA RIVER.


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Summary

Built in 1973 by the USDA NRCS, this earth dam stands at 29 feet tall and stretches 590 feet in length, with a maximum storage capacity of 84 acre-feet. The primary purpose of this structure is flood risk reduction, serving as a vital tool for water resource management in the region.

Managed by the Nebraska Department of Natural Resources, Wilson Creek 9-1 is regulated, permitted, inspected, and enforced to ensure its structural integrity and safety. With a low hazard potential and satisfactory condition assessment, this dam presents minimal risk to surrounding communities. Emergency preparedness measures are in place, although specific details on an Emergency Action Plan and risk assessment are currently unavailable.

Operating under the jurisdiction of the Kansas City District, Wilson Creek 9-1 plays a crucial role in water resource management and flood control in the area. With its strategic location and design, this dam serves as a key component in protecting the local ecosystem and communities from the impacts of extreme weather events and changing climate patterns.

Year Completed

1973

Dam Length

590

Dam Height

28

River Or Stream

TR-N FK LITTLE NEMAHA RIVER

Primary Dam Type

Earth

Surface Area

5

Hydraulic Height

28

Drainage Area

0.5

Nid Storage

84

Structural Height

29

Hazard Potential

Low

Foundations

Soil

Nid Height

29
       
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.