Oknoname 111047 Reservoir Report
Nearby: Oknoname 111051 Oknoname 111032
Last Updated: December 18, 2025
Oknoname 111047, located in Okmulgee, Oklahoma, is a privately owned dam on TR-COAL CREEK with a primary purpose classified as 'Other'.
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Summary
Built in 1960, this Earth-type dam stands at a height of 28 feet and has a storage capacity of 50 acre-feet. With a controlled spillway and valve as the outlet gates, this structure has a low hazard potential but is considered to have a very high risk due to its condition assessment not being rated.
Managed by the Oklahoma Water Resources Board, Oknoname 111047 is subject to state regulation, inspection, and enforcement. The dam, with a length of 3440 feet and a hydraulic height of 28 feet, serves a critical role in water resource management in the region. Markwayne Mullin (R) represents the area in Congress but no federal agency ownership or funding is associated with this structure.
Although the last inspection was conducted in 2001, with an inspection frequency of 5 years, the condition assessment remains unrated. The dam's emergency action plan status and risk management measures are also unclear. Water resource and climate enthusiasts interested in the infrastructure and management of dams would find Oknoname 111047 a compelling case study for understanding the complexities of balancing water resource utilization with safety and environmental concerns.
Year Completed |
1960 |
Dam Length |
3440 |
Dam Height |
28 |
River Or Stream |
TR-COAL CREEK |
Primary Dam Type |
Earth |
Surface Area |
1 |
Hydraulic Height |
28 |
Nid Storage |
50 |
Structural Height |
28 |
Outlet Gates |
Valve - 1 |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
28 |
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 111047