Oknoname 111058 Reservoir Report
Nearby: Oknoname 111057 Oknoname 111078
Last Updated: December 6, 2025
Oknoname 111058 is a privately owned earth dam located in Okmulgee, Oklahoma, specifically in the city of GRAYSON.
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Summary
Built in 1979 for irrigation purposes on TR-WOLF CREEK, this dam stands at 32 feet high and spans a length of 3400 feet. It has a storage capacity of 100 acre-feet and a normal storage level of 45 acre-feet. The dam's spillway is of the controlled type with a width of 1 foot, and it is equipped with a single valve outlet gate.
Managed by the Oklahoma Water Resources Board, Oknoname 111058 has a low hazard potential and is currently in a condition that has not been officially rated. Despite its low hazard potential, the dam is identified as having a very high risk assessment level, reflecting the importance of ongoing monitoring and maintenance. The last inspection of the dam was conducted in November 2001, with a scheduled inspection frequency of every 5 years. Although the dam has not been modified in recent years, it is crucial for authorities and stakeholders to ensure that appropriate risk management measures are in place to safeguard against potential emergencies and protect the surrounding community and environment.
Year Completed |
1979 |
Dam Length |
3400 |
Dam Height |
32 |
River Or Stream |
TR-WOLF CREEK |
Primary Dam Type |
Earth |
Surface Area |
1 |
Hydraulic Height |
32 |
Nid Storage |
100 |
Structural Height |
32 |
Outlet Gates |
Valve - 1 |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
32 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Deep Fork Near Beggs
|
141cfs |
North Canadian River Near Wetumka
|
209cfs |
Arkansas River Near Haskell
|
4870cfs |
Canadian River At Calvin
|
361cfs |
Canadian River Near Whitefield
|
1190cfs |
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 111058