Scs-Nine Mile Creek Site-08 Reservoir Report
Last Updated: December 7, 2025
SCS-Nine Mile Creek Site-08, located in Roger Mills County, Oklahoma, is a state-regulated Earth dam constructed in 1959 by the USDA NRCS for the primary purpose of flood risk reduction along the TR-Nine Mile Creek.
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Summary
With a structural height of 29 feet and a length of 700 feet, the dam has a storage capacity of 302 acre-feet and a maximum discharge rate of 2480 cubic feet per second. The dam features a controlled spillway and one outlet valve, with a hazard potential rated as low and a condition assessment that is currently not rated.
Despite being last inspected in 1980, the dam at SCS-Nine Mile Creek Site-08 is considered to have a very high risk level, indicating potential issues requiring future attention. The dam is under the jurisdiction of the OWRB and meets state regulatory requirements for inspection, permitting, and enforcement. While the dam's emergency action plan and risk management measures are currently not available, the site is closely monitored for any changes in its condition. For water resource and climate enthusiasts, SCS-Nine Mile Creek Site-08 serves as a significant infrastructure for flood control in the region, highlighting the importance of proper maintenance and risk assessment for ensuring its long-term effectiveness in mitigating flood risks.
Year Completed |
1959 |
Dam Length |
700 |
Dam Height |
29 |
River Or Stream |
TR-NINEMILE CR |
Primary Dam Type |
Earth |
Surface Area |
18 |
Hydraulic Height |
24 |
Nid Storage |
302 |
Structural Height |
29 |
Outlet Gates |
Valve - 1 |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
29 |
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-08