Oknoname 111064 Reservoir Report
Nearby: Lake Drive Acres Oknoname 111037
Last Updated: December 21, 2025
Oknoname 111064, located in Okmulgee County, Oklahoma, is a privately owned earth dam constructed in 1940 for recreational purposes.
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Summary
The dam stands at a height of 30 feet and has a storage capacity of 220 acre-feet, with a normal storage level of 110 acre-feet. It is situated on the TR-Coal Creek river and spans a length of 3370 feet, creating a surface area of 3 acres for recreational activities.
Managed by the Oklahoma Water Resources Board (OWRB), Oknoname 111064 has a low hazard potential and is rated as "Not Rated" in terms of its condition assessment. The dam features a controlled spillway and a single valve outlet gate for water release. While the last inspection was conducted in August 2011, the dam is subject to regular inspections every 5 years to ensure its safety and functionality. Despite its low hazard potential, the risk assessment for Oknoname 111064 is categorized as "Very High (1)", indicating the need for proactive risk management measures.
With a picturesque location in the city of Dewar, Oklahoma, Oknoname 111064 offers a serene setting for recreational activities such as fishing, boating, and picnicking. The dam's association with the Tulsa District of the US Army Corps of Engineers ensures that it meets federal standards and regulations for dam safety. As a vital water resource in the region, Oknoname 111064 serves as a testament to the importance of proper dam management and risk mitigation strategies in the face of climate challenges.
Year Completed |
1940 |
Dam Length |
3370 |
Dam Height |
30 |
River Or Stream |
TR-COAL CREEK |
Primary Dam Type |
Earth |
Surface Area |
3 |
Hydraulic Height |
30 |
Nid Storage |
220 |
Structural Height |
30 |
Outlet Gates |
Valve - 1 |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
30 |
Seasonal Comparison
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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 111064