Oknoname 113020 Reservoir Report

Last Updated: December 14, 2025

Oknoname 113020 is a privately owned dam located in Bartlesville, Oklahoma, along the TR-MISSION CR river.


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Summary

Built in 1966, this Earth-type dam stands at a height of 35 feet and has a length of 225 feet, with a storage capacity of 160 acre-feet. Despite its low hazard potential, it is regulated by the Oklahoma Water Resources Board (OWRB) and undergoes regular inspections, with the last one conducted in August 2006.

With a controlled spillway and one valve outlet gate, Oknoname 113020 serves a primary purpose of "Other" and is designed to withstand a maximum discharge of 1500 cubic feet per second. The dam's risk assessment deems it as having a very high risk level, necessitating proactive risk management measures. Although its condition is currently not rated, the dam's structure, built on a stone core with a soil foundation, indicates its resilience in mitigating potential risks.

Water resource and climate enthusiasts will find Oknoname 113020 an interesting case study for its design and construction details, as well as its regulatory oversight and risk assessment. As a critical infrastructure in managing water resources and ensuring public safety, this dam exemplifies the importance of maintaining and evaluating dams to prevent potential hazards and protect surrounding communities.

Year Completed

1966

Dam Length

225

Dam Height

35

River Or Stream

TR-MISSION CR

Primary Dam Type

Earth

Surface Area

2

Hydraulic Height

35

Nid Storage

160

Structural Height

35

Outlet Gates

Valve - 1

Hazard Potential

Low

Foundations

Soil

Nid Height

35
       
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.