Scs-Little Washita River Site-15 Reservoir Report
Last Updated: December 6, 2025
SCS-Little Washita River Site-15, located in Ninnekah, Oklahoma, is a state-regulated earth dam designed by USDA NRCS for flood risk reduction along the TR-Charlie Creek.
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Summary
Completed in 1978, this dam stands at a height of 37 feet with a hydraulic height of 35 feet, and a length of 820 feet. It has a storage capacity of 1007 acre-feet and a surface area of 38 acres, with a controlled spillway type and one valve outlet gate.
Despite its low hazard potential, SCS-Little Washita River Site-15 is classified as having a very high risk due to its location and potential impact on the surrounding area in the event of a failure. The dam has not been rated for its condition assessment, and the last inspection was conducted in 1980. The dam is not owned by any federal agency but is under state jurisdiction and regulated by the Oklahoma Water Resources Board, with state permitting, inspection, and enforcement in place.
Water resource and climate enthusiasts will find SCS-Little Washita River Site-15 to be an intriguing case study in flood risk reduction infrastructure. The dam plays a crucial role in protecting the local community from potential flooding events along the TR-Charlie Creek, highlighting the importance of proper dam design, maintenance, and regulation in managing water resources and mitigating climate-related risks.
Year Completed |
1978 |
Dam Length |
820 |
Dam Height |
37 |
River Or Stream |
TR-CHARLIE CR |
Primary Dam Type |
Earth |
Surface Area |
38 |
Hydraulic Height |
35 |
Nid Storage |
1007 |
Structural Height |
37 |
Outlet Gates |
Valve - 1 |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
37 |
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-15