Oknoname 063033 Reservoir Report

Last Updated: December 6, 2025

Oknoname 063033 is a privately owned earth dam located in Hughes, Oklahoma, specifically in the city of Atwood.


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Summary

Completed in 1972, this structure on TR-Big Creek stands at a height of 22 feet and has a length of 3450 feet. With a storage capacity of 95 acre-feet, the dam serves multiple purposes and is regulated by the Oklahoma Water Resources Board. It has a controlled spillway with a width of 1 foot and a maximum discharge of 960 cubic feet per second.

Despite being classified as having a low hazard potential, the risk assessment for Oknoname 063033 indicates a very high risk level. However, the condition assessment is marked as "Not Rated," and the last inspection was conducted in August 2011 with an inspection frequency of every 5 years. The dam has one outlet gate for water release and is not associated with any other structures. While emergency action plans and inundation maps are not currently prepared or updated, the dam is still in operation and meets regulatory guidelines.

For water resource and climate enthusiasts, Oknoname 063033 presents an intriguing case study of a privately owned dam in Oklahoma with a high-risk assessment despite a low hazard potential. With its unique design, controlled spillway, and state-regulated status, this earth dam on TR-Big Creek offers a fascinating glimpse into the management and oversight of water infrastructure in the region. As discussions around climate change and water conservation continue to evolve, understanding the intricacies of structures like Oknoname 063033 is crucial for ensuring the safety and sustainability of our water resources.

Year Completed

1972

Dam Length

3450

Dam Height

22

River Or Stream

TR-BIG CREEK

Primary Dam Type

Earth

Hydraulic Height

22

Nid Storage

95

Structural Height

22

Outlet Gates

Valve - 1

Hazard Potential

Low

Foundations

Soil

Nid Height

22
       
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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.