Scs-Wildhorse Creek Site-126 Reservoir Report

Last Updated: December 16, 2025

SCS-Wildhorse Creek Site-126, located in Garvin, Oklahoma, is a state-regulated earth dam completed in 1967 by the USDA NRCS with a primary purpose of flood risk reduction.


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Summary

Standing at a height of 37 feet and a length of 810 feet, this dam on TR-Wildhorse Creek has a storage capacity of 162 acre-feet and a maximum discharge of 770 cubic feet per second. With a controlled spillway and a low hazard potential rating, the dam is equipped with a single valve outlet gate for water release.

Despite being last inspected in 1980 and not having a current condition assessment, the dam at SCS-Wildhorse Creek Site-126 is considered to have a very high risk level due to its age and lack of recent evaluations. While the emergency action plan status and risk management measures are unclear, the dam's state-regulated status ensures that OWRB oversees its permitting, inspection, and enforcement processes. As a critical structure for flood protection in the area, ongoing monitoring and maintenance are crucial to ensuring the safety and effectiveness of this water resource infrastructure.

Year Completed

1967

Dam Length

810

Dam Height

37

River Or Stream

TR-WILDHORSE CREEK

Primary Dam Type

Earth

Surface Area

3

Hydraulic Height

37

Nid Storage

162

Structural Height

37

Outlet Gates

Valve - 1

Hazard Potential

Low

Foundations

Soil

Nid Height

37
       
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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.