Oknoname 137040 Reservoir Report

Last Updated: December 7, 2025

Oknoname 137040 is a privately owned earth dam located in Stephens, Oklahoma, along the TR Clear Creek.


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Summary

Completed in 1975, this dam stands at a height of 31 feet and has a storage capacity of 72 acre-feet. With a controlled spillway and a maximum discharge of 620 cubic feet per second, the dam is designed to withstand low hazard potential and has not been rated for its condition assessment.

Managed by the Oklahoma Water Resources Board, this dam is subject to state regulations, permitting, inspections, and enforcement. Despite its remote location in the city of Hope, the dam plays a crucial role in water resource management and flood control in the region. With a very high risk assessment rating of 1, it is essential for the owners to have emergency action plans in place to mitigate any potential risks associated with the dam.

Although the dam is not funded or owned by any federal agency, its presence highlights the importance of private ownership in maintaining critical water infrastructure. With its stone core and soil foundation, Oknoname 137040 serves as a vital structure for water storage and management in the Tulsa District. As water resource and climate enthusiasts, it is important to recognize the role of such dams in ensuring the sustainability and resilience of our water systems in the face of changing environmental conditions.

Year Completed

1975

Dam Length

360

Dam Height

31

River Or Stream

TR CLEAR CREEK

Primary Dam Type

Earth

Surface Area

4

Hydraulic Height

27

Nid Storage

72

Structural Height

31

Outlet Gates

Valve - 1

Hazard Potential

Low

Foundations

Soil

Nid Height

31
       
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.
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