Scs-Wildhorse Creek Site-229 Reservoir Report

Last Updated: April 30, 2026

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Located in Garvin, Oklahoma, the SCS-Wildhorse Creek Site-229 is a state-owned earth dam designed by the USDA NRCS in 1973 for flood risk reduction along the TR-ROCK CREEK.


Summary

With a height of 27 feet and a storage capacity of 74 acre-feet, this dam serves as a crucial infrastructure for the local community in mitigating potential flooding events. Managed by the OWRB, the dam is inspected every 5 years and has a low hazard potential rating.

Despite being last inspected in 1980 and not having a current condition assessment, the SCS-Wildhorse Creek Site-229 remains an essential part of the flood risk reduction efforts in the area. Its controlled spillway and valve outlet gate ensure proper water management during heavy rainfall events, with a maximum discharge capacity of 248 cubic feet per second. With a very high risk assessment rating, the dam's design and construction by the Natural Resources Conservation Service highlight the commitment to water resource management in the region.

15-Day Long Term Forecast


Year Completed

1973

Dam Length

662

Dam Height

27

River Or Stream

TR-ROCK CREEK

Primary Dam Type

Earth

Surface Area

8

Hydraulic Height

25

Nid Storage

74

Structural Height

27

Outlet Gates

Valve - 1

Hazard Potential

Low

Foundations

Soil

Nid Height

27
       
Seasonal Comparison

5-Day Hourly Forecast Detail

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.
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