Scs-Nine Mile Creek Site-12 Reservoir Report
Last Updated: December 7, 2025
SCS-Nine Mile Creek Site-12, located in Roger Mills County, Oklahoma, is a state-regulated earth dam designed by the USDA NRCS for flood risk reduction along the TR-Washita River.
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Summary
Completed in 1964, this dam stands at a height of 38 feet and has a storage capacity of 312 acre-feet, with a primary purpose of flood risk reduction. The dam spans 1450 feet in length and has a controlled spillway with a width of 1 foot.
Despite being categorized as having a low hazard potential, the risk assessment for SCS-Nine Mile Creek Site-12 indicates a very high risk level, emphasizing the importance of ongoing inspection and maintenance. The last recorded inspection of the dam dates back to January 1, 1980, with an inspection frequency of every 5 years. While the condition of the dam is currently not rated, it is crucial for authorities to stay vigilant and ensure that proper risk management measures are in place to mitigate any potential hazards.
Overall, SCS-Nine Mile Creek Site-12 serves as a crucial infrastructure for flood risk reduction in the area, and its location along the TR-Washita River underscores its significance in water resource management. As climate change continues to impact the frequency and intensity of extreme weather events, the maintenance and upkeep of dams like SCS-Nine Mile Creek Site-12 become increasingly important in safeguarding communities and the environment from potential flooding risks.
Year Completed |
1964 |
Dam Length |
1450 |
Dam Height |
38 |
River Or Stream |
TR-WASHITA RIVER |
Primary Dam Type |
Earth |
Surface Area |
23 |
Hydraulic Height |
33 |
Nid Storage |
312 |
Structural Height |
38 |
Outlet Gates |
Valve - 1 |
Hazard Potential |
Low |
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-Nine Mile Creek Site-12