Oknoname 111069 Reservoir Report

Last Updated: December 6, 2025

Oknoname 111069 is a private-owned recreational dam located in Okmulgee, Oklahoma, specifically in the city of DEWAR.


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Summary

The dam, standing at a height of 35 feet, serves the primary purpose of recreation and is regulated by the Oklahoma Water Resources Board (OWRB). The structure is situated on TR-COAL CREEK, within the Tulsa District of Oklahoma, and has a storage capacity of 50 acre-feet with a normal storage level of 25 acre-feet. The dam has a controlled spillway type with a width of 1 foot and a maximum discharge capacity of 490 cubic feet per second.

Despite being classified as having a low hazard potential, the risk assessment for Oknoname 111069 indicates a very high risk, suggesting the need for vigilant monitoring and management. The dam has not been rated for its condition, with the last inspection conducted in May 2002. The structure features a single valve outlet gate and has not undergone any modifications in recent years. While the emergency action plan (EAP) status and risk management measures are not provided in the data, the dam is not under the jurisdiction of the US Army Corps of Engineers.

Overall, Oknoname 111069 serves as an important recreational feature in the region, but its risk assessment highlights the need for continued oversight and potential updates to its emergency response protocols. With a focus on public safety and environmental protection, the dam's condition and hazard potential should be regularly reassessed to ensure the integrity of the structure and the surrounding area. As water resource and climate enthusiasts, staying informed about the status of dams like Oknoname 111069 is crucial for promoting sustainable management practices and enhancing community resilience in the face of potential hazards.

Dam Length

3330

Dam Height

35

River Or Stream

TR-COAL CREEK

Primary Dam Type

Earth

Surface Area

1

Hydraulic Height

35

Nid Storage

50

Structural Height

35

Outlet Gates

Valve - 1

Hazard Potential

Low

Foundations

Soil

Nid Height

35
       
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.