Oknoname 063021 Reservoir Report
Nearby: Oknoname 063020 Rippetoe Dam
Last Updated: December 6, 2025
Oknoname 063021 is a privately owned earth dam located in Hughes County, Oklahoma, near the city of Atwood.
°F
°F
mph
Wind
%
Humidity
Summary
The dam, designed by USDA NRCS, stands at a height of 28 feet and has a length of 940 feet, with a storage capacity of 490 acre-feet. Completed in 1970, the primary purpose of the dam is listed as 'Other', with low hazard potential and a very high risk assessment ranking of 1.
The dam is regulated by the Oklahoma Water Resources Board (OWRB) and undergoes regular state inspections, with a previous inspection conducted in August 2011. The structure is equipped with a controlled spillway and a single valve outlet gate. Although the dam is not associated with any federal agencies or funding, it falls under the jurisdiction of the Tulsa District of the US Army Corps of Engineers. Despite its low hazard potential, the risk assessment for Oknoname 063021 remains at a very high level, emphasizing the importance of continued monitoring and maintenance to ensure the safety of the surrounding area and the TR-Holdenville Lake.
Overall, Oknoname 063021 serves as a vital component of water resource management in the region, providing flood control and water storage capabilities. Its strategic location along the TR-Holdenville Lake makes it a key structure for maintaining water levels and protecting downstream areas. With its state-regulated status and regular inspections, the dam stands as a testament to effective water resource management practices in Oklahoma, safeguarding the local community and environment from potential risks associated with dam failure.
Year Completed |
1970 |
Dam Length |
940 |
Dam Height |
28 |
River Or Stream |
TR-HOLDENVILLE LAKE |
Primary Dam Type |
Earth |
Surface Area |
10 |
Hydraulic Height |
28 |
Nid Storage |
490 |
Structural Height |
28 |
Outlet Gates |
Valve - 1 |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
28 |
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 063021