Oknoname 013003 Reservoir Report

Last Updated: December 5, 2025

Oknoname 013003 is a privately owned earth dam located in Bryan, Oklahoma, along the TR-ROCK CR river/stream.


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Summary

Built in 1952, this dam stands at a height of 15 feet and has a maximum storage capacity of 68 acre-feet. With a spillway type classified as "Controlled" and a low hazard potential, this structure serves purposes beyond just flood control, making it a unique addition to the water resource infrastructure in the area.

Managed by the Oklahoma Water Resources Board (OWRB), Oknoname 013003 is subject to state regulations and inspections, ensuring its structural integrity and safety for surrounding communities. The dam's hydraulic height of 12 feet and a surface area of 4 acres further highlight its significance in managing water flow in the region. Despite being ungraded in terms of condition assessment, the risk assessment for this dam is rated as "Very High (1)", emphasizing the importance of proper management and maintenance measures.

While the dam has not been significantly modified over the years, it is equipped with a single valve outlet gate for water release. With a congressman representing the area, Markwayne Mullin (R), the dam remains an integral part of the local water management system. As climate change continues to impact water resources, structures like Oknoname 013003 play a crucial role in mitigating risks and ensuring sustainable water management practices in the region.

Year Completed

1952

Dam Length

750

Dam Height

15

River Or Stream

TR-ROCK CR

Primary Dam Type

Earth

Surface Area

4

Hydraulic Height

12

Nid Storage

68

Structural Height

14

Outlet Gates

Valve - 1

Hazard Potential

Low

Foundations

Soil

Nid Height

15
       
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.