Oknoname 30072 Reservoir Report

Last Updated: December 6, 2025

Oknoname 30072, located in Washington County, Oklahoma, is a privately owned earth dam on Coon Creek with a primary purpose of recreation.


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Summary

Designed by USDA NRCS, this dam stands at a height of 17 feet and has a storage capacity of 147 acre-feet. It boasts a controlled spillway with a width of 1 foot and features a single valve outlet gate. Although last inspected in April 2010 and deemed to have a low hazard potential, its risk assessment is classified as "Very High (1)", indicating potential vulnerabilities that warrant attention.

While not federally owned or funded, Oknoname 30072 falls under state jurisdiction, regulated by the Oklahoma Water Resources Board (OWRB). It is subject to state permitting, inspection, and enforcement, ensuring compliance with safety standards. Despite its condition assessment being listed as "Not Rated", the dam remains operational for recreational purposes. With a risk management plan yet to be fully detailed, stakeholders should consider conducting a thorough assessment to address the identified high-risk factors and ensure the continued safety and integrity of Oknoname 30072 for water resource and climate enthusiasts who frequent the area.

Dam Height

17

River Or Stream

COON CREEK

Primary Dam Type

Earth

Hydraulic Height

17

Nid Storage

147

Structural Height

17

Outlet Gates

Valve - 1

Hazard Potential

Low

Foundations

Soil

Nid Height

17
       
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.