Scs-Little Washita River Site-44 Reservoir Report
Last Updated: December 6, 2025
SCS-Little Washita River Site-44 is a state-regulated dam located in Ninnekah, Oklahoma, along the TR-Little Washita River.
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Summary
Built in 1980 by the USDA NRCS, this earth dam stands at a height of 38 feet and serves the primary purpose of flood risk reduction. With a normal storage capacity of 147 acre-feet and a maximum storage of 648 acre-feet, this dam plays a crucial role in managing water flow and mitigating potential flood hazards in the area.
The dam features a controlled spillway and a single valve outlet gate for water release. Despite being assessed as in fair condition during the last inspection in 2011, it is classified as having a significant hazard potential. With a very high risk rating of 1, this structure requires regular inspections and risk management measures to ensure its continued safety and effectiveness in flood control. The dam is under the jurisdiction of the OWRB and is part of the Tulsa District, operated by the Natural Resources Conservation Service.
Water resource and climate enthusiasts can appreciate the vital role that SCS-Little Washita River Site-44 plays in safeguarding the local community from flood risks. Its strategic location along the Little Washita River and its substantial storage capacity make it a key infrastructure for water management in Grady County, Oklahoma. The dam's design by the USDA NRCS and its state-regulated status underscore the importance of collaboration between federal and state agencies in ensuring the safety and reliability of water infrastructure for the benefit of the surrounding environment and residents.
Year Completed |
1980 |
Dam Length |
1200 |
Dam Height |
38 |
River Or Stream |
TR-LITTLE WASHITA RIV |
Primary Dam Type |
Earth |
Surface Area |
24 |
Hydraulic Height |
33 |
Nid Storage |
648 |
Structural Height |
38 |
Outlet Gates |
Valve - 1 |
Hazard Potential |
Significant |
Foundations |
Soil |
Nid Height |
38 |
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.
Scs-Little Washita River Site-44