Oknoname 063020 Reservoir Report
Nearby: Rippetoe Dam Oknoname 063021
Last Updated: December 6, 2025
Oknoname 063020, located in Hughes County, Oklahoma, is a privately owned earth dam completed in 1970 with a primary purpose categorized as "Other." This dam, standing at a height of 27 feet and stretching 420 feet in length, serves as a critical structure on TR-Holdenville Lake.
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Summary
Managed by the Oklahoma Water Resources Board (OWRB), this dam is regulated, inspected, and enforced by the state, ensuring its safety and functionality.
With a storage capacity of 74 acre-feet, Oknoname 063020 poses a low hazard potential but has a very high risk assessment rating. Despite being in a "Not Rated" condition assessment status, this dam has a controlled spillway and a single valve outlet gate. In the event of an emergency, however, the dam lacks an updated emergency action plan (EAP) and inundation maps prepared, highlighting the need for improved risk management measures and guidelines adherence.
Overall, Oknoname 063020 is a vital component of the water infrastructure in the area, providing essential water storage and flood control capabilities. As climate change continues to impact water resources, the maintenance and proper management of dams like Oknoname 063020 are crucial in ensuring the safety and resilience of communities in the face of evolving hydrological challenges.
Year Completed |
1970 |
Dam Length |
420 |
Dam Height |
27 |
River Or Stream |
TR-HOLDENVILLE LAKE |
Primary Dam Type |
Earth |
Surface Area |
4 |
Hydraulic Height |
27 |
Nid Storage |
74 |
Structural Height |
27 |
Outlet Gates |
Valve - 1 |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
27 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Canadian River At Calvin
|
361cfs |
Little River Near Sasakwa
|
12cfs |
North Canadian River Near Wetumka
|
209cfs |
Little River Near Tecumseh
|
8cfs |
North Canadian River At Shawnee
|
177cfs |
Deep Fork Near Beggs
|
141cfs |
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 063020