Scs-Wildhorse Creek Site-065 Reservoir Report

Last Updated: December 8, 2025

The SCS-Wildhorse Creek Site-065, located in Garvin, Oklahoma, is a state-regulated dam managed by the Oklahoma Water Resources Board (OWRB) for flood risk reduction along the TR-Sandy Bear Creek.


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Summary

Built by the USDA NRCS in 1963, this earth dam stands at a height of 30 feet with a length of 1125 feet, providing a storage capacity of 215 acre-feet for flood control purposes. The dam features a controlled spillway and a single valve outlet gate for water release.

Despite its low hazard potential, the SCS-Wildhorse Creek Site-065 has a very high risk assessment due to its age and lack of recent condition assessments. The dam is currently not rated for its structural condition, and no emergency action plan (EAP) or inundation maps have been prepared. With an inspection frequency of 5 years and the last inspection date recorded in 1980, there is a need for updated risk management measures and guidelines to ensure the safety and functionality of this critical infrastructure in the face of changing climate conditions and potential water resource challenges.

Year Completed

1963

Dam Length

1125

Dam Height

30

River Or Stream

TR-SANDY BEAR CREEK

Primary Dam Type

Earth

Surface Area

7

Hydraulic Height

30

Nid Storage

215

Structural Height

30

Outlet Gates

Valve - 1

Hazard Potential

Low

Foundations

Soil

Nid Height

30
       
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.