Scs-Sallisaw Creek Site-18 Reservoir Report

Last Updated: December 5, 2025

SCS-Sallisaw Creek Site-18, also known as Stilwell Reservoir, is a vital water resource located in Bunch, Oklahoma.


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Summary

Owned by the local government, this site plays a crucial role in flood risk reduction in the area. Constructed in 1965 by the Natural Resources Conservation Service and URS, this stone dam stands at a height of 72.4 feet with a hydraulic height of 68 feet, serving a drainage area of 7.34 square miles.

With a maximum storage capacity of 8,000 acre-feet and a normal storage of 3,218 acre-feet, the reservoir covers a surface area of 365 acres. The dam has a controlled spillway and a hazard potential rated as high, with a fair condition assessment. Despite its age, the dam continues to be inspected regularly, with the last inspection conducted in December 2011. The risk assessment for this site is very high, highlighting the importance of proper management and maintenance to ensure its continued functionality and safety for the surrounding community.

In the event of an emergency, the presence of an Emergency Action Plan (EAP) is essential. While details regarding the EAP for SCS-Sallisaw Creek Site-18 are not provided in the data, its preparation and adherence to guidelines are crucial for effective risk management. With a very high risk rating and the potential for significant impact in case of failure, it is imperative that all necessary measures are in place to safeguard this important water resource and mitigate potential hazards effectively.

Year Completed

1965

Dam Length

2300

Dam Height

72.4

River Or Stream

TRIBUTARY OF SALLISAW CREEK

Surface Area

365

Hydraulic Height

68

Drainage Area

7.34

Nid Storage

8000

Structural Height

68

Hazard Potential

High

Foundations

Rock, Soil

Nid Height

72
       
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.