Oknoname 111071 Reservoir Report
Nearby: Oknoname 111069 Oknoname 111073
Last Updated: December 6, 2025
Oknoname 111071 is a privately owned dam located in Okmulgee, Oklahoma, specifically in the city of DEWAR.
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Summary
It was completed in 1940 and stands at a height of 25 feet with a length of 3120 feet, providing a storage capacity of 800 acre-feet. The dam, built primarily for purposes classified as "Other", is of the Earth type with a stone core and soil foundation, serving as a vital structure on the TR-COAL CREEK river or stream.
Managed by the Oklahoma Water Resources Board (OWRB), Oknoname 111071 has a low hazard potential and has not been rated for its current condition. It features a controlled spillway with a width of 1 foot and an outlet gate in the form of a single valve. Despite its age, the dam has undergone inspections every 5 years, with the last one taking place in August 2011. The risk assessment for this dam is classified as "Very High (1)", emphasizing the importance of continued monitoring and maintenance to ensure its safety and functionality in the face of potential climate challenges.
Overall, Oknoname 111071 serves as a crucial component of water resource management in Oklahoma, standing as a testament to the state's commitment to regulating and ensuring the safety of its dams. With its historical significance and ongoing regulatory oversight, this dam highlights the intersection of water resource management and climate resilience efforts, underscoring the importance of proactive measures to mitigate risks and safeguard critical infrastructure in the face of changing environmental conditions.
Year Completed |
1940 |
Dam Length |
3120 |
Dam Height |
25 |
River Or Stream |
TR-COAL CREEK |
Primary Dam Type |
Earth |
Hydraulic Height |
25 |
Nid Storage |
800 |
Structural Height |
25 |
Outlet Gates |
Valve - 1 |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
25 |
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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 111071