Scs-Little Washita River Site-18 Reservoir Report
Last Updated: December 6, 2025
SCS-Little Washita River Site-18, located in Comanche County, Oklahoma, is a state-regulated dam designed by the USDA NRCS with a primary purpose of flood risk reduction.
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Summary
Completed in 1972, this earth dam stands at a height of 44 feet and has a hydraulic height of 41 feet. With a storage capacity of 942 acre-feet and a normal storage of 162 acre-feet, this structure plays a crucial role in managing water resources in the region.
The dam's spillway type is controlled, with a width of 1 foot, and it is equipped with a single valve outlet gate. Despite being assessed to be in fair condition during its last inspection in November 2011, the dam has a high hazard potential and is classified as having a very high risk level. The regulatory oversight of the dam falls under the Oklahoma Water Resources Board, with state permitting, inspection, and enforcement processes in place to ensure its safety and functionality for the surrounding community and ecosystem.
Being a vital component in the water management infrastructure of the Little Washita River, SCS-Little Washita River Site-18 serves as a critical line of defense against flooding and plays a crucial role in safeguarding the area from potential water-related disasters. It stands as a testament to the collaborative efforts of state and federal agencies in protecting and preserving water resources in Oklahoma.
Year Completed |
1972 |
Dam Length |
1190 |
Dam Height |
44 |
River Or Stream |
TR-LITTLE WASHITA RIVER |
Primary Dam Type |
Earth |
Surface Area |
29 |
Hydraulic Height |
41 |
Nid Storage |
942 |
Structural Height |
44 |
Outlet Gates |
Valve - 1 |
Hazard Potential |
High |
Foundations |
Soil |
Nid Height |
44 |
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-18
Scs Pond No. 26 Near Cyril