Oknoname 149007 Reservoir Report
Last Updated: December 6, 2025
Oknoname 149007 is a state-regulated dam located in Washita, Oklahoma, designed by USDA NRCS and completed in 1965 for flood risk reduction along the TR-WASHITA river.
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Summary
With a height of 26 feet and a hydraulic height of 21 feet, this earth dam spans 920 feet and has a storage capacity of 137 acre-feet. Despite being classified as having a low hazard potential, the dam is considered to have a very high risk due to its critical role in flood risk reduction in the region.
Managed by the Oklahoma state regulatory agency OWRB, Oknoname 149007 features a controlled spillway with a width of 1 foot and one valve outlet gate for operational control. While it has not been rated for condition assessment, the dam undergoes inspections every 5 years, with the last one conducted in August 2006. The risk associated with this dam is deemed very high, reflecting its importance in mitigating flooding impacts in the area.
With its strategic location in Mountain View, Oklahoma, Oknoname 149007 serves as a vital infrastructure for flood control measures in the region, contributing to the overall water resource management efforts. As a key structure in the Tulsa District managed by the Natural Resources Conservation Service, the dam plays a crucial role in protecting the local community from potential inundation events. Despite its low hazard potential, the dam's high risk rating underscores the significance of its operations and maintenance to ensure continued effectiveness in flood risk reduction.
Year Completed |
1965 |
Dam Length |
920 |
Dam Height |
26 |
River Or Stream |
TR-WASHITA |
Primary Dam Type |
Earth |
Surface Area |
2 |
Hydraulic Height |
21 |
Nid Storage |
137 |
Structural Height |
26 |
Outlet Gates |
Valve - 1 |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
26 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Cobb Creek Near Eakly
|
16cfs |
Lake Creek Near Eakly
|
4cfs |
Willow Creek Near Albert
|
2cfs |
Cobb Creek Near Fort Cobb
|
4cfs |
Washita River Near Clinton
|
32cfs |
Washita River At Anadarko
|
121cfs |
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 149007