Scs-Cowden Laterals Site-010 Reservoir Report

Last Updated: December 6, 2025

SCS-Cowden Laterals Site-010 is a state-owned Earth-type dam located in Caddo, Oklahoma, specifically in the city of FORT COBB.


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Summary

Completed in 1980, this dam serves primarily for Flood Risk Reduction purposes along the WASHITA RIVER. It stands at a height of 54 feet with a hydraulic height of 51 feet and a structural height of 54 feet, and has a length of 1100 feet. The dam has a Normal Storage capacity of 240 acre-feet and a Maximum Storage capacity of 1502 acre-feet, covering a surface area of 31 acres.

Managed by the USDA NRCS, this low hazard potential dam is regulated by the Oklahoma Water Resources Board (OWRB) and undergoes regular state inspections, permitting, and enforcement. The dam features a Controlled spillway with a width of 2 feet, and is equipped with a single Valve outlet gate. While the dam's condition assessment is currently not rated, it has a very high risk assessment rating of 1, indicating the importance of ongoing risk management measures. Overall, SCS-Cowden Laterals Site-010 is a critical piece of infrastructure contributing to flood risk reduction efforts in the region.

Year Completed

1980

Dam Length

1100

Dam Height

54

River Or Stream

WASHITA RIVER

Primary Dam Type

Earth

Surface Area

31

Hydraulic Height

51

Nid Storage

1502

Structural Height

54

Outlet Gates

Valve - 1

Hazard Potential

Low

Foundations

Soil

Nid Height

54
       
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.