Scs-Uncle John Creek Site-04 Reservoir Report

Last Updated: December 6, 2025

SCS-Uncle John Creek Site-04, located in Canadian County, Oklahoma, is a state-regulated earth dam designed by the USDA NRCS with a primary purpose of flood risk reduction.


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Summary

Completed in 1974, this dam stands at a height of 44 feet and has a length of 1850 feet, capable of storing up to 1833 acre-feet of water. It is situated on the TR-Uncle John Creek, within the Tulsa District of the USACE, and is under the jurisdiction of the Oklahoma Water Resources Board.

With a significant hazard potential and a fair condition assessment, SCS-Uncle John Creek Site-04 is inspected every three years and equipped with a controlled spillway to manage potential overflow. The dam features one outlet gate and a spillway width of 2 feet, with a maximum discharge capacity of 17,620 cubic feet per second. Despite its age, this dam plays a crucial role in protecting the surrounding area from flooding, showcasing the importance of proper water resource management in mitigating climate-related risks.

Year Completed

1974

Dam Length

1850

Dam Height

44

River Or Stream

TR-UNCLE JOHN CREEK

Primary Dam Type

Earth

Surface Area

28

Hydraulic Height

44

Nid Storage

1833

Structural Height

44

Outlet Gates

Valve - 1

Hazard Potential

Significant

Foundations

Soil

Nid Height

44
       
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.