Scs-Nine Mile Creek Site-14 Reservoir Report
Last Updated: December 9, 2025
SCS-Nine Mile Creek Site-14, located in Roger Mills, Oklahoma, is a state-regulated earth dam designed by the USDA NRCS with a primary purpose of 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 maximum storage capacity of 204 acre-feet. With a controlled spillway and a low hazard potential, the dam has been inspected periodically, with the last recorded inspection dating back to 1980.
Despite its age, SCS-Nine Mile Creek Site-14 continues to serve its purpose effectively, with a risk assessment ranking of "Very High (1)" indicating that the dam is in good condition and well-maintained. Even though the dam is not owned by a federal agency, it is subject to state regulation and inspection by the Oklahoma Water Resources Board (OWRB). The dam's location in Strong City, along with its low hazard potential and historical performance, positions it as a crucial infrastructure for flood risk management in the region.
Overall, SCS-Nine Mile Creek Site-14 is a vital component of the flood risk reduction infrastructure in Roger Mills County, Oklahoma. With a solid foundation, controlled spillway, and state regulation ensuring its safety and maintenance, this earth dam continues to play a critical role in mitigating the impact of potential flooding along the TR-Washita River. Its long-standing presence since the 1960s underscores its importance for water resource and climate enthusiasts concerned about effective flood risk management infrastructure in the area.
Year Completed |
1964 |
Dam Length |
560 |
Dam Height |
38 |
River Or Stream |
TR-WASHITA RIVER |
Primary Dam Type |
Earth |
Surface Area |
12 |
Hydraulic Height |
35 |
Nid Storage |
204 |
Structural Height |
38 |
Outlet Gates |
Valve - 1 |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
38 |
Seasonal Comparison
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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-14