Oknoname 111044 Reservoir Report
Nearby: Oknoname 111045 Oknoname 111046
Last Updated: December 5, 2025
Oknoname 111044 is a privately owned dam located in Okmulgee County, Oklahoma, specifically in the city of Henryetta.
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Summary
Completed in 1940, this Earth-type dam stands at a height of 18 feet and stretches 3250 feet in length, with a primary purpose classified as "Other." The dam has a storage capacity of 50 acre-feet and a maximum discharge of 180 cubic feet per second, with a spillway type designated as "Controlled."
Maintained by the Oklahoma Water Resources Board, Oknoname 111044 has a low hazard potential and a very high risk assessment rating. Although it has not been rated for its condition, it undergoes inspections every five years. The dam's infrastructure includes a valve outlet gate and a stone core foundation, situated on the TR-Coal Creek river or stream within the jurisdiction of the state and regulated by the OWRB. Despite its age, Oknoname 111044 continues to serve its intended purpose effectively and contributes to water resource management in the region.
Year Completed |
1940 |
Dam Length |
3250 |
Dam Height |
18 |
River Or Stream |
TR-COAL CREEK |
Primary Dam Type |
Earth |
Surface Area |
1 |
Hydraulic Height |
18 |
Nid Storage |
50 |
Structural Height |
18 |
Outlet Gates |
Valve - 1 |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
18 |
Seasonal Comparison
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Nearby Streamflow Levels
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 111044