Oknoname 137023 Reservoir Report

Last Updated: December 8, 2025

Oknoname 137023 is a privately owned dam located in Stephens, Oklahoma, near the city of Short Cemetery.


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Summary

Constructed in 1970, this earth dam stands at a height of 26 feet and has a hydraulic height of 23 feet. With a length of 350 feet and a storage capacity of 69 acre-feet, this dam serves multiple purposes and is regulated by the Oklahoma Water Resources Board (OWRB).

Situated on the TR-East Cow Creek, Oknoname 137023 is classified as a low hazard potential structure with a very high risk assessment. Despite not having a condition assessment rating, this dam has been inspected regularly since its last assessment in 2011. Equipped with a controlled spillway and a single valve outlet gate, this dam is designed to manage a maximum discharge of 564 cubic feet per second, ensuring the safety of the surrounding community in case of emergencies.

Overall, Oknoname 137023 plays a crucial role in water resource management in the area, providing essential storage and flood control capabilities. Its presence underscores the importance of maintaining and regulating dams to safeguard against potential risks and ensure the sustainability of water resources for future generations.

Year Completed

1970

Dam Length

350

Dam Height

26

River Or Stream

TR-EAST COW CR

Primary Dam Type

Earth

Surface Area

3

Hydraulic Height

23

Nid Storage

69

Structural Height

26

Outlet Gates

Valve - 1

Hazard Potential

Low

Foundations

Soil

Nid Height

26
       
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.