Oknoname 059017 Reservoir Report

Last Updated: December 22, 2025

Oknoname 059017 is a private dam located in Harper County, Oklahoma, specifically in the city of Freedom.


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Summary

Built in 1997, this Earth-type dam stands at a height of 28 feet and has a storage capacity of 290 acre-feet. It is situated on TR-Sleeping Bear Creek and is regulated by the Oklahoma Water Resources Board (OWRB), with state permitting, inspection, and enforcement in place.

The dam, with a length of 525 feet and a surface area of 10 acres, serves a primary purpose of "Other" and has a spillway type of "Controlled" with a width of 2 feet. Despite being classified as having a low hazard potential and not having a condition assessment rating, it is noted to have a very high risk assessment (1) based on available data. The dam is equipped with a single valve outlet gate and has a designated emergency action plan (EAP) frequency of every 5 years.

In terms of jurisdiction, the dam falls under the Tulsa District of the US Army Corps of Engineers (USACE) with no federal agency ownership or funding associated. With its unique design and risk profile, Oknoname 059017 stands as a significant structure in the region, contributing to water resource management efforts while also presenting challenges in terms of risk management and emergency preparedness.

Year Completed

1997

Dam Length

525

Dam Height

28

River Or Stream

TR-SLEEPING BEAR CREEK

Primary Dam Type

Earth

Surface Area

10

Hydraulic Height

28

Nid Storage

290

Structural Height

28

Outlet Gates

Valve - 1

Hazard Potential

Low

Foundations

Soil

Nid Height

28
       
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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.