Scs-Little Washita River Site-28 Reservoir Report

Last Updated: December 6, 2025

SCS-Little Washita River Site-28 is a state-owned dam located in Caddo, Oklahoma, specifically in Rocky Ford, with the primary purpose of flood risk reduction along Chetonia Creek.


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Summary

Designed by the USDA NRCS and completed in 1980, this earth dam stands at 54 feet tall and spans 950 feet in length, providing a storage capacity of 871 acre-feet for floodwaters. The dam features a controlled spillway and a single valve outlet gate for water release, with a hazard potential rated as low and a very high risk assessment score.

Managed by the Oklahoma Water Resources Board (OWRB) and regulated by the state, SCS-Little Washita River Site-28 has undergone inspections every 5 years, with the last inspection conducted in 1980. While the condition assessment is currently rated as not rated, the dam is considered to be structurally sound. Although the emergency action plan status and risk management measures are not specified, the dam's design and operation meet state permitting and enforcement requirements, ensuring its effectiveness in mitigating flood risks in the region. For water resource and climate enthusiasts, this site serves as a crucial infrastructure for safeguarding communities and ecosystems from potential flooding events.

Year Completed

1980

Dam Length

950

Dam Height

54

River Or Stream

CHETONIA CREEK

Primary Dam Type

Earth

Surface Area

10

Hydraulic Height

48

Nid Storage

871

Structural Height

54

Outlet Gates

Valve - 1

Hazard Potential

Low

Foundations

Soil

Nid Height

54
       
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.