Oknoname 111073 Reservoir Report
Nearby: Oknoname 111070 Oknoname 111071
Last Updated: December 6, 2025
Oknoname 111073, located in Okmulgee, Oklahoma, is a privately owned earth dam constructed in 1940 on Coal Creek.
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Summary
This dam stands at a height of 40 feet and has a storage capacity of 500 acre-feet. With a controlled spillway and a single valve outlet gate, the dam is designed for multiple purposes, although its primary purpose is categorized as "Other".
Despite being rated as having a low hazard potential, Oknoname 111073 is considered to have a very high risk due to potential safety concerns. The dam has not been inspected since August 2011, with an inspection frequency of 5 years. While the condition assessment is listed as "Not Rated", the risk management measures and emergency action plan status are unknown, raising further concerns about the dam's safety and preparedness in the event of an emergency.
Given its location in a high-risk area and lack of recent inspection data, water resource and climate enthusiasts may find Oknoname 111073 to be a concerning structure. The dam's state-regulated status and the involvement of the OWRB in overseeing its operation and maintenance indicate a level of oversight, but the lack of recent inspections and unknown emergency preparedness status highlight potential vulnerabilities that warrant further investigation and monitoring.
Year Completed |
1940 |
Dam Length |
3400 |
Dam Height |
40 |
River Or Stream |
COAL CREEK |
Primary Dam Type |
Earth |
Surface Area |
1 |
Hydraulic Height |
40 |
Nid Storage |
500 |
Structural Height |
40 |
Outlet Gates |
Valve - 1 |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
40 |
Seasonal Comparison
Weather Forecast
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 111073