Oknoname 113149 Reservoir Report

Last Updated: December 15, 2025

Oknoname 113149, located in Osage, Oklahoma, is a privately owned earth dam with a height of 32 feet and a hydraulic height of 30 feet.


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Summary

Built in 1940, this dam serves a primary purpose of "Other" and has a storage capacity of 220 acre-feet. The dam is regulated by the Oklahoma Water Resources Board and is subject to state permitting, inspection, and enforcement.

The dam is situated on the TR-BEAVER CR river/stream, within the Tulsa District of Oklahoma. It has a controlled spillway with a width of 1 foot and one valve outlet gate. Despite being classified as having a low hazard potential, the dam's risk assessment is rated as "Very High (1)". The last inspection of Oknoname 113149 was conducted on November 26, 2001, with an inspection frequency of every 5 years.

Water resource and climate enthusiasts will find Oknoname 113149 to be an intriguing structure due to its historical significance, unique design features, and the potential risks associated with its high-risk rating. The dam's location in Osage, Oklahoma, along with its regulated status by the OWRB, adds to its importance in the management of water resources in the area. With its controlled spillway and valve outlet gate, this earth dam presents an interesting case study for those interested in the intersection of water infrastructure and environmental stewardship.

Year Completed

1940

Dam Length

210

Dam Height

32

River Or Stream

TR-BEAVER CR

Primary Dam Type

Earth

Surface Area

14

Hydraulic Height

30

Nid Storage

220

Structural Height

32

Outlet Gates

Valve - 1

Hazard Potential

Low

Foundations

Soil

Nid Height

32
       
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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.