Scs-Delaware Creek Site-006 Reservoir Report

Last Updated: December 6, 2025

SCS-Delaware Creek Site-006, located in Wapanucka, Oklahoma, is a state-owned earth dam designed by USDA NRCS to primarily serve the purpose of flood risk reduction along TR-Sandy Creek.


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Summary

Completed in 1964, this dam stands at a height of 34 feet with a hydraulic height of 30 feet and a structural height of 34 feet. With a length of 1810 feet, it has a maximum storage capacity of 141 acre-feet and a normal storage capacity of 18 acre-feet, encompassing a surface area of 5 acres.

Managed by the OWRB in Johnston County, Oklahoma, SCS-Delaware Creek Site-006 has a controlled spillway type with a width of 1 foot and a valve outlet gate. Despite being assessed as having a low hazard potential, the dam's risk assessment is rated as very high (1), indicating the need for careful monitoring and risk management measures. Although the condition assessment is not rated, the last inspection in 2005 revealed its structural integrity. This site showcases the vital role of earth dams in protecting communities from the adverse impacts of flooding in the region.

Year Completed

1964

Dam Length

1810

Dam Height

34

River Or Stream

TR-SANDY CREEK

Primary Dam Type

Earth

Surface Area

5

Hydraulic Height

30

Nid Storage

141

Structural Height

34

Outlet Gates

Valve - 1

Hazard Potential

Low

Foundations

Soil

Nid Height

34
       
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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.