Scs-Sallisaw Creek Site-40 Reservoir Report

Last Updated: December 5, 2025

Located in Sallisaw, Oklahoma, the SCS-Sallisaw Creek Site-40 is a state-regulated earth dam constructed in 1969 by the USDA NRCS.


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Summary

Standing at a height of 23 feet and spanning a length of 1825 feet, this dam serves a primary purpose of flood risk reduction along the Garvin Branch. With a normal storage capacity of 30 acre-feet and a maximum storage of 377 acre-feet, the dam is equipped with a controlled spillway and a single valve outlet gate.

Despite being classified as low hazard potential, the SCS-Sallisaw Creek Site-40 poses a very high risk due to its age and lack of recent condition assessments. It is under the jurisdiction of the Oklahoma Water Resources Board and is subject to state permitting, inspection, and enforcement. The dam has not been modified in recent years, and emergency action plans and risk management measures are currently not documented. With its strategic location and critical role in flood risk reduction, the SCS-Sallisaw Creek Site-40 serves as a vital water resource in the region for climate enthusiasts and conservationists alike.

Year Completed

1969

Dam Length

1825

Dam Height

23

River Or Stream

GARVIN BRANCH

Primary Dam Type

Earth

Surface Area

10

Hydraulic Height

23

Nid Storage

377

Structural Height

23

Outlet Gates

Valve - 1

Hazard Potential

Low

Foundations

Soil

Nid Height

23
       
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.