Oknoname 149039 Reservoir Report
Last Updated: December 6, 2025
Oknoname 149039 is a privately owned dam located in Washita County, Oklahoma, specifically in the city of Carnegie.
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Summary
Built in 1955, this Earth-type dam stands at a height of 18 feet and serves primarily for irrigation purposes along the Washita River. It has a storage capacity of 50 acre-feet and a controlled spillway with a width of 1 foot. Despite being classified as having a low hazard potential, the dam is considered to have a very high risk due to its age and condition assessment being marked as "Not Rated".
Managed by the Oklahoma Water Resources Board, Oknoname 149039 undergoes regular inspections approximately every 5 years, with the last one conducted in August 2006. The dam features a single valve outlet gate and is subject to state regulation, permitting, inspection, and enforcement. While it has not been modified in recent years and lacks certain emergency preparedness measures, the dam continues to play a crucial role in supporting local irrigation activities and water management in the region. For water resource and climate enthusiasts, this dam serves as a notable landmark in the Tulsa District, offering insight into the infrastructure and management of water resources in the area.
Year Completed |
1955 |
Dam Length |
1000 |
Dam Height |
18 |
River Or Stream |
TR-WASHITA RIV |
Primary Dam Type |
Earth |
Hydraulic Height |
16 |
Nid Storage |
50 |
Structural Height |
18 |
Outlet Gates |
Valve - 1 |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
18 |
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 149039