Oknoname 111008 Reservoir Report
Nearby: Oknoname 111006 Sims W.M.
Last Updated: December 18, 2025
Oknoname 111008 is a private dam located in Okmulgee, Oklahoma, with a primary purpose classified as "Other." The dam, completed in 1955, is an Earth-type structure with a height of 22 feet and a length of 780 feet.
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Summary
It has a storage capacity of 410 acre-feet and a normal storage level of 250 acre-feet. The dam is regulated by the Oklahoma Water Resources Board (OWRB) and undergoes regular inspections, with the last one conducted in August 2011.
Despite being classified as having a low hazard potential, Oknoname 111008 is considered to have a very high risk due to its location and characteristics. The dam has a controlled spillway with a width of 2 feet and an outlet gate with one valve. In the event of an emergency, the dam does not have an Emergency Action Plan (EAP) prepared, and its condition assessment is listed as "Not Rated." The risk management measures for the dam are not specified, highlighting the need for further evaluation and preparedness in case of potential hazards.
Overall, Oknoname 111008 serves as a crucial component of the water infrastructure in the area, contributing to water storage and flood control along the TR-DEEP FORK RIV. While the dam is currently rated as having a low hazard potential, its high risk classification underscores the importance of regular monitoring, maintenance, and emergency preparedness to ensure the safety and integrity of the structure and the surrounding community.
Year Completed |
1955 |
Dam Length |
780 |
Dam Height |
22 |
River Or Stream |
TR-DEEP FORK RIV |
Primary Dam Type |
Earth |
Surface Area |
12 |
Hydraulic Height |
22 |
Nid Storage |
410 |
Structural Height |
22 |
Outlet Gates |
Valve - 1 |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
22 |
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Dam Data Reference
Condition Assessment
SatisfactoryNo 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
HighDams 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.
Oknoname 111008