Oknoname 111039 Reservoir Report
Nearby: Oknoname 111046 Oknoname 111045
Last Updated: December 5, 2025
Oknoname 111039 is a privately owned Earth dam located in Henryetta, Oklahoma, specifically on TR-COAL CREEK.
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Summary
Built in 1940, this dam stands at a height of 20 feet and has a storage capacity of 140 acre-feet. With a controlled spillway and a low hazard potential, this structure plays a crucial role in water resource management in the region.
Despite being a privately owned dam, Oknoname 111039 is regulated by the Oklahoma Water Resources Board (OWRB) and undergoes regular inspections and enforcement measures to ensure its safety and functionality. The dam is equipped with a valve outlet gate and has a maximum discharge capacity of 620 cubic feet per second, making it an important infrastructure for flood control and water storage in the area.
Although the dam's condition assessment is currently marked as "Not Rated," its risk assessment is classified as "Very High (1)." With a history dating back to almost 80 years, Oknoname 111039 presents an interesting case study for water resource and climate enthusiasts interested in the management and maintenance of aging infrastructure in the face of changing environmental conditions and increasing risks of extreme weather events.
Year Completed |
1940 |
Dam Length |
3700 |
Dam Height |
20 |
River Or Stream |
TR-COAL CREEK |
Primary Dam Type |
Earth |
Hydraulic Height |
20 |
Nid Storage |
140 |
Structural Height |
20 |
Outlet Gates |
Valve - 1 |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
20 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
North Canadian River Near Wetumka
|
212cfs |
Deep Fork Near Beggs
|
142cfs |
Canadian River At Calvin
|
361cfs |
Arkansas River Near Haskell
|
6440cfs |
Little River Near Sasakwa
|
14cfs |
Little Haikey Creek At 101st St South At Tulsa
|
0cfs |
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 111039