Oknoname 111041 Reservoir Report
Nearby: Oknoname 111040 Pinkston Wr
Last Updated: December 5, 2025
Oknoname 111041 is a privately owned dam located in Okmulgee, Oklahoma, near the city of Henryetta.
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Summary
Built in 1940, this Earth dam stands at a height of 25 feet and spans 3360 feet in length, with a primary purpose of "Other." It is regulated by the Oklahoma Water Resources Board (OWRB) and has state permitting, inspection, and enforcement in place to ensure its safety and compliance.
Situated on TR-COAL CREEK, in the Tulsa District, Oknoname 111041 has a maximum storage capacity of 50 acre-feet and a normal storage level of 25 acre-feet. The dam features a controlled spillway and is equipped with a single valve outlet gate. Despite its low hazard potential and "Not Rated" condition assessment, the dam is categorized as having a very high risk level, with a risk assessment ranking of 1. While the last inspection took place in August 2011, the dam is scheduled for inspections every 5 years to monitor its safety and functionality.
Overall, Oknoname 111041 serves as an important water resource infrastructure in the region, contributing to flood control and water storage. Its presence on TR-COAL CREEK highlights its significance in the local water management system. With state regulation and monitoring in place, the dam plays a crucial role in ensuring the safety and well-being of the surrounding community and environment, making it a key asset for water resource and climate enthusiasts to keep an eye on.
Year Completed |
1940 |
Dam Length |
3360 |
Dam Height |
25 |
River Or Stream |
TR-COAL CREEK |
Primary Dam Type |
Earth |
Surface Area |
1 |
Hydraulic Height |
25 |
Nid Storage |
50 |
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 111041