Scs-Little Washita River Site-20 Reservoir Report
Last Updated: December 6, 2025
SCS-Little Washita River Site-20 is a state-regulated flood risk reduction structure located in Comanche, Oklahoma, along the TR Little Washita River.
°F
°F
mph
Wind
%
Humidity
Summary
Built in 1960 by the USDA NRCS, this dam stands at a height of 45 feet and spans a length of 1115 feet, with a maximum storage capacity of 260 acre-feet. The dam's primary purpose is flood risk reduction, serving as a crucial infrastructure to protect the surrounding area from potential inundation.
With a low hazard potential and a very high risk assessment rating, SCS-Little Washita River Site-20 is crucial for ensuring the safety and security of the local community. Although the dam's condition assessment is not rated, regular inspections are conducted every 5 years to monitor its structural integrity and performance. Despite its age, this dam continues to play a vital role in managing floodwaters and safeguarding the region against potential disasters, highlighting the importance of ongoing maintenance and monitoring efforts to ensure its continued effectiveness.
Managed by the Natural Resources Conservation Service, SCS-Little Washita River Site-20 is an integral component of the local water resource infrastructure. With state jurisdiction and regulatory oversight provided by the OWRB, this dam represents a collaborative effort to mitigate flood risks and protect the environment. As climate change continues to impact water resources and weather patterns, structures like SCS-Little Washita River Site-20 will be essential for adapting to evolving challenges and ensuring the resilience of communities in the face of a changing climate.
Year Completed |
1960 |
Dam Length |
1115 |
Dam Height |
45 |
River Or Stream |
TR LITTLE WASHITA RIVER |
Surface Area |
19 |
Hydraulic Height |
45 |
Drainage Area |
2.63 |
Nid Storage |
260 |
Structural Height |
45 |
Outlet Gates |
Valve - 1 |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
45 |
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-20
Scs Pond No. 26 Near Cyril