Oknoname 111077 Reservoir Report
Nearby: Oknoname 111078 Ophornett Martin
Last Updated: December 6, 2025
Oknoname 111077 is a private dam located in Okmulgee, Oklahoma, with a primary purpose of recreation.
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Summary
Built in 1960, this earth dam stands at 30 feet tall and spans 3630 feet in length, creating a reservoir with a storage capacity of 140 acre-feet. The dam is situated on TR-COAL CREEK and is regulated by the Oklahoma Water Resources Board (OWRB), with state permitting, inspection, and enforcement in place to ensure its safety and compliance with regulations.
Despite its low hazard potential, Oknoname 111077 is rated as having a very high risk due to its location and structural aspects. The dam has one valve outlet gate and a controlled spillway, with a maximum discharge capacity of 4200 cubic feet per second. While the dam's condition assessment is currently not rated, it undergoes inspections every 5 years to monitor its safety and integrity. With its recreational purpose and scenic surroundings in the Tulsa District, Oknoname 111077 serves as both a water resource and a climate enthusiast's haven to enjoy and appreciate the beauty of nature.
Year Completed |
1960 |
Dam Length |
3630 |
Dam Height |
30 |
River Or Stream |
TR-COAL CREEK |
Primary Dam Type |
Earth |
Surface Area |
4 |
Hydraulic Height |
30 |
Nid Storage |
140 |
Structural Height |
30 |
Outlet Gates |
Valve - 1 |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
30 |
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 111077