Oknoname 051030 Reservoir Report
Last Updated: December 6, 2025
Oknoname 051030 is a privately owned earth dam located in Ninnekah, Oklahoma, along the TR-Hog Creek, with a height of 25 feet and a length of 500 feet.
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Summary
Completed in 1960, the dam has a storage capacity of 120 acre-feet and a normal storage of 58 acre-feet, serving primarily for purposes classified as "Other." Despite being in a low hazard potential category, the dam is noted for its very high risk assessment, with a risk level of 1, indicating the need for close monitoring and potential mitigation measures.
Managed by the Oklahoma Water Resources Board, the dam is subject to state regulations, permitting, inspection, and enforcement practices to ensure its structural integrity and safety. The dam features a controlled spillway type with a width of 1 foot and an outlet gate equipped with a single valve. While the last inspection date was in 2010, with a scheduled inspection frequency of every 5 years, the condition assessment remains unrated, highlighting the need for updated monitoring and evaluation protocols to assess its current status accurately.
Although designated as a low hazard potential structure, Oknoname 051030 is deemed to have a very high risk level, warranting a closer assessment of its safety and structural integrity. With a history dating back to 1960, the dam serves as a vital component in managing water resources in the area, requiring ongoing maintenance and monitoring to ensure its continued functionality. As water resource and climate enthusiasts, understanding the intricacies of dams like Oknoname 051030 is crucial in safeguarding our water infrastructure and mitigating potential risks associated with aging structures.
Year Completed |
1960 |
Dam Length |
500 |
Dam Height |
25 |
River Or Stream |
TR-HOG CREEK |
Primary Dam Type |
Earth |
Surface Area |
2 |
Hydraulic Height |
25 |
Nid Storage |
120 |
Structural Height |
25 |
Outlet Gates |
Valve - 1 |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
25 |
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 051030