Wildhorse 9-A Reservoir Report

Last Updated: December 12, 2025

Wildhorse 9-A is a vital flood risk reduction structure located in Morrill, Nebraska, specifically designed by the USDA NRCS to protect the surrounding area from potential water-related hazards.


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Summary

Completed in 1959, this earth dam stands at a height of 54 feet and has a storage capacity of 2040 acre-feet, serving the primary purpose of flood risk reduction along the Wild Horse Creek. With a low hazard potential and a satisfactory condition assessment, Wildhorse 9-A plays a crucial role in safeguarding the local community against potential flooding events.

Owned and regulated by the local government with oversight from the Nebraska Department of Natural Resources, Wildhorse 9-A undergoes regular inspections to ensure its structural integrity and functionality. The dam's satisfactory condition, along with its consistent maintenance and inspection schedule, highlights its importance in maintaining water resource management and climate resilience in the region. Positioned within the Omaha District, this structure serves as a testament to effective water resource management and the collaborative efforts of government agencies in safeguarding communities against natural disasters.

As a key component in the region's water infrastructure, Wildhorse 9-A stands as a testament to the importance of proactive flood risk reduction measures in the face of changing climate patterns and increasing water-related challenges. With its strategic location, design, and purpose, this earth dam exemplifies the intersection of engineering excellence and environmental stewardship, ensuring the safety and well-being of the community it serves. Wildhorse 9-A represents a critical link in the chain of water resource management efforts, highlighting the importance of sustainable practices and infrastructure investments in mitigating the impacts of climate change on water resources.

Year Completed

1959

Dam Length

1395

Dam Height

54

River Or Stream

WILD HORSE CREEK

Primary Dam Type

Earth

Surface Area

4.66

Hydraulic Height

54

Drainage Area

10.7

Nid Storage

2040

Structural Height

59.5

Hazard Potential

Low

Foundations

Soil

Nid Height

60
       
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.