Scs-Little Washita River Site-49 Reservoir Report

Last Updated: December 6, 2025

SCS-Little Washita River Site-49, located in Rocky Ford, Caddo County, Oklahoma, is a state-owned earth dam constructed in 1978 by the USDA NRCS for flood risk reduction purposes along Chetonia Creek.


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Summary

The dam stands at a height of 46 feet and stretches 1370 feet in length, with a maximum storage capacity of 1083 acre-feet and a normal storage level of 136 acre-feet. Despite being classified as having a high hazard potential, the dam is currently in fair condition and is inspected annually by the Oklahoma Water Resources Board.

The primary purpose of SCS-Little Washita River Site-49 is flood risk reduction, with a controlled spillway type and a single valve outlet gate. The dam's risk assessment is rated as very high, and it is under the regulatory jurisdiction of the Oklahoma Water Resources Board. The surrounding area is at risk of inundation in the event of a dam failure, highlighting the importance of regular inspections and maintenance to ensure public safety and water resource management in the region. For water resource and climate enthusiasts, this site serves as a vital piece of infrastructure for flood control and mitigation efforts in Caddo County.

Year Completed

1978

Dam Length

1370

Dam Height

46

River Or Stream

CHETONIA CREEK

Primary Dam Type

Earth

Surface Area

16

Hydraulic Height

46

Nid Storage

1083

Structural Height

46

Outlet Gates

Valve - 1

Hazard Potential

High

Foundations

Soil

Nid Height

46
       
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.