Oknoname 30129 Reservoir Report
Last Updated: December 5, 2025
Oknoname 30129 is a privately owned earth dam located on the South Canadian River in Greenfield, Oklahoma.
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Summary
Constructed in 2004 by the USDA NRCS, this dam serves a variety of purposes and stands at a height of 36.3 feet with a length of 300 feet. With a normal storage capacity of 35 acre-feet and a maximum storage of 123 acre-feet, this dam plays a crucial role in managing water resources in the area.
Despite being classified as low hazard potential, Oknoname 30129 is subject to regular inspections and is regulated by the Oklahoma Water Resources Board. The dam features a controlled spillway and a single valve outlet gate for water release. While it has not been rated for condition assessment, the risk assessment categorizes it as very high, indicating the importance of ongoing monitoring and maintenance to ensure its structural integrity and safety.
With a drainage area of 729 square miles and a surface area of 5.6 acres, Oknoname 30129 plays a vital role in flood control and water supply management in the region. As water resource and climate enthusiasts, it is crucial to stay informed about the condition and regulatory status of dams like Oknoname 30129 to ensure the sustainable and efficient use of water resources for future generations.
Year Completed |
2004 |
Dam Length |
300 |
Dam Height |
36.3 |
River Or Stream |
SOUTH CANADIAN RIVER |
Primary Dam Type |
Earth |
Surface Area |
5.6 |
Hydraulic Height |
36.3 |
Drainage Area |
729 |
Nid Storage |
123 |
Structural Height |
36.3 |
Outlet Gates |
Valve - 1 |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
36 |
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 30129