Scs-Upper Washita Creek Site-043 Reservoir Report

Last Updated: December 6, 2025

SCS-Upper Washita Creek Site-043, located in Roger Mills County, Oklahoma, is a state-regulated earth dam designed by USDA NRCS for flood risk reduction purposes.


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Summary

Completed in 1961, this dam stands at a height of 42 feet and has a storage capacity of 645 acre-feet. The dam, situated on the TR-Washita River, features a controlled spillway with a width of 2 feet and an outlet gate controlled by a single valve.

Despite being categorized as having a low hazard potential, SCS-Upper Washita Creek Site-043 is considered to have a very high risk level, as indicated by a risk assessment score of 1. The dam has not been rated for its condition assessment as of yet, with the last inspection conducted in 1980. It is noteworthy that the dam does not fall under the jurisdiction of the US Army Corps of Engineers, and as such, it is primarily managed and regulated by the Oklahoma Water Resources Board.

Overall, SCS-Upper Washita Creek Site-043 serves as a crucial infrastructure for flood risk mitigation in the region, showcasing the collaborative efforts between the state and federal agencies in ensuring the safety and protection of the local communities against potential water-related disasters. Its strategic location and design elements highlight its significance in water resource management and climate resilience efforts within the state of Oklahoma.

Year Completed

1961

Dam Length

1990

Dam Height

42

River Or Stream

TR-WASHITA RIVER

Primary Dam Type

Earth

Surface Area

26

Hydraulic Height

35

Nid Storage

645

Structural Height

42

Outlet Gates

Valve - 1

Hazard Potential

Low

Foundations

Soil

Nid Height

42
       
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.