Scs-Wildhorse Creek Site-020 Reservoir Report

Last Updated: December 8, 2025

SCS-Wildhorse Creek Site-020, located in Stephens County, Oklahoma, is a state-regulated earth dam constructed by the USDA NRCS in 1959 for flood risk reduction along the TR-Wildhorse Creek.


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Summary

Standing at a height of 27 feet and spanning a length of 1370 feet, this dam has a storage capacity of 491 acre-feet and a normal storage of 159 acre-feet, covering a surface area of 24 acres. Despite being rated as low hazard potential, the risk assessment for this dam is marked as very high, emphasizing the importance of regular inspections and maintenance.

With a controlled spillway type and a single valve outlet gate, SCS-Wildhorse Creek Site-020 is designed to withstand maximum discharges of up to 1390 cubic feet per second. The dam's structure is primarily made of stone core with a soil foundation, ensuring its stability and functionality in managing floodwaters. The dam is under the jurisdiction of the Oklahoma Water Resources Board (OWRB) and is subject to state permitting, inspection, and enforcement protocols, highlighting the commitment to ensuring the safety and effectiveness of this critical infrastructure in water resource management. For water resource and climate enthusiasts, this site serves as a significant example of sustainable flood risk reduction measures in the region.

Year Completed

1959

Dam Length

1370

Dam Height

27

River Or Stream

TR-WILDHORSE CREEK

Primary Dam Type

Earth

Surface Area

24

Hydraulic Height

27

Nid Storage

491

Structural Height

27

Outlet Gates

Valve - 1

Hazard Potential

Low

Foundations

Soil

Nid Height

27
       
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.