Oknoname 137073 Reservoir Report

Last Updated: December 8, 2025

Oknoname 137073 is a privately owned earth dam located in Harrisburg, Oklahoma, along the TR East Mud Creek.


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Summary

Built in 1975, this 20-foot high dam serves a primary purpose of 'Other', with a storage capacity of 79 acre-feet and a maximum discharge of 499 cubic feet per second. The dam is regulated by the Oklahoma Water Resources Board (OWRB) and has state jurisdiction, permitting, inspection, and enforcement in place.

Despite being classified as low hazard potential and not rated for condition assessment, Oknoname 137073 is considered to have a very high risk level according to the data available. The dam features a controlled spillway, one valve outlet gate, and stone core foundation. Although the last inspection was in 2011 with a frequency of every 5 years, the emergency action plan (EAP) status and risk management measures remain unspecified.

The location of Oknoname 137073 in Stephens County, Oklahoma, under the Fort Worth District, highlights the importance of understanding and monitoring this dam's condition and risk level. With a very high risk assessment, stakeholders and climate enthusiasts must advocate for regular inspections, updated emergency action plans, and risk management strategies to ensure the safety and sustainability of this water resource infrastructure.

Year Completed

1975

Dam Length

518

Dam Height

20

River Or Stream

TR EAST MUD CREEK

Primary Dam Type

Earth

Hydraulic Height

17

Nid Storage

79

Structural Height

20

Outlet Gates

Valve - 1

Hazard Potential

Low

Foundations

Soil

Nid Height

20
       
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.