Oknoname 137089 Reservoir Report

Last Updated: December 22, 2025

Oknoname 137089, located in Stephens, Oklahoma, is a privately owned dam constructed in 1960 with a primary purpose of "Other." The earth dam, with a height of 25 feet and a hydraulic height of 21 feet, spans 378 feet in length and has a storage capacity of 66 acre-feet.


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Summary

The dam is regulated by the Oklahoma Water Resources Board (OWRB) and is subject to state jurisdiction, permitting, inspection, and enforcement.

Despite being categorized as having a low hazard potential, Oknoname 137089 is considered to have a very high risk due to its location on TR Dry Creek and its limited spillway capacity. The dam features a controlled spillway with a width of 1 foot and is equipped with a single valve outlet gate. Although the dam's condition is currently not rated, it undergoes inspections every five years. Emergency action plans and risk management measures for the dam are not available, highlighting the importance of ensuring proper safety protocols for this structure.

As water resource and climate enthusiasts, it is crucial to monitor and assess the risks associated with dams like Oknoname 137089 to prevent potential hazards and protect surrounding communities and ecosystems. With its high risk designation and the absence of certain safety measures, it is imperative for stakeholders to prioritize the implementation of emergency plans and maintenance strategies to ensure the structural integrity and safety of this dam in the face of changing climate conditions.

Year Completed

1960

Dam Length

378

Dam Height

25

River Or Stream

TR DRY CREEK

Primary Dam Type

Earth

Surface Area

7

Hydraulic Height

21

Nid Storage

66

Structural Height

25

Outlet Gates

Valve - 1

Hazard Potential

Low

Foundations

Soil

Nid Height

25
       
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.