Scs-South Clinton Laterals Site-001 Reservoir Report

Last Updated: December 6, 2025

SCS-South Clinton Laterals Site-001 is a state-regulated earth dam located in Parkersburg, Oklahoma, along the TR-Washita River.


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Summary

Built in 1959 by USDA NRCS, this dam stands at a height of 49 feet and serves the primary purpose of flood risk reduction. With a storage capacity of 565 acre-feet, the dam covers a surface area of 38 acres and has a maximum discharge of 4470 cubic feet per second.

Managed by the Oklahoma Water Resources Board, this dam has a controlled spillway and one outlet valve. Despite being classified as having a low hazard potential, the risk assessment for SCS-South Clinton Laterals Site-001 indicates a very high risk level. The dam's condition assessment is currently not rated, and the last inspection was conducted in 1980. With an inspection frequency of 5 years, it is crucial to monitor and maintain this vital infrastructure to ensure the safety of the surrounding community and the effectiveness of flood risk reduction measures in the region.

For water resource and climate enthusiasts, SCS-South Clinton Laterals Site-001 presents an intriguing case study of a historic earth dam in Oklahoma. Its role in flood risk reduction along the TR-Washita River, coupled with its state-regulated status and low hazard potential, highlights the importance of sustainable water management practices. As the dam approaches its sixth decade of service, continued monitoring, maintenance, and risk assessment are essential to safeguarding both the dam's structural integrity and the surrounding environment.

Year Completed

1959

Dam Length

980

Dam Height

49

River Or Stream

TR-WASHITA RIVER

Primary Dam Type

Earth

Surface Area

38

Hydraulic Height

44

Nid Storage

565

Structural Height

49

Outlet Gates

Valve - 1

Hazard Potential

Low

Foundations

Soil

Nid Height

49
       
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.