Oknoname 137094 Reservoir Report

Last Updated: December 8, 2025

Oknoname 137094 is a privately owned earth dam located in Stephens, Oklahoma, near the HWY 29 Bridge along the TR Black Bear Creek.


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Summary

The dam stands at a height of 26 feet with a hydraulic height of 23 feet and a length of 680 feet. Completed in 1975, it has a storage capacity of 86 acre-feet and a maximum discharge of 725 cubic feet per second. The dam is equipped with a controlled spillway and a single valve outlet gate.

Despite being classified as having a low hazard potential, Oknoname 137094 is considered to have a very high risk, with a risk assessment rating of 1. The condition assessment of the dam is currently listed as "Not Rated", with the last inspection date recorded in August 2011. The dam is regulated by the Oklahoma Water Resources Board (OWRB) and is subject to state jurisdiction, permitting, inspection, and enforcement.

Overall, Oknoname 137094 plays a crucial role in managing water resources in the area, with its primary purpose listed as "Other". As a key structure along TR Black Bear Creek, the dam serves to control water flow, provide storage capacity, and mitigate potential flood risks. With its strategic location and design, this earth dam contributes to the overall water resource management efforts in the region, highlighting the importance of maintaining and monitoring its structural integrity for long-term sustainability and climate resilience.

Year Completed

1975

Dam Length

680

Dam Height

26

River Or Stream

TR BLACK BEAR CREEK

Primary Dam Type

Earth

Surface Area

1

Hydraulic Height

23

Nid Storage

86

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.
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