Scs-Rock Creek Site-12 Reservoir Report
Last Updated: December 16, 2025
SCS-Rock Creek Site-12 in Sulphur, Oklahoma, is a state-regulated earth dam designed by USDA NRCS in 1962 for flood risk reduction along the TR-Rock Creek.
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Summary
Standing at 30 feet tall with a hydraulic height of 26 feet, this dam boasts a storage capacity of 769 acre-feet and a surface area of 28 acres. With a controlled spillway and a valve outlet gate, this dam has a low hazard potential and has not been rated for its condition assessment.
Despite being last inspected in 1980, SCS-Rock Creek Site-12 remains a critical infrastructure for flood risk management in Murray County, Oklahoma. With a maximum discharge capacity of 2820 cubic feet per second, this dam plays a vital role in protecting downstream communities from potential flooding events. Climate and water resource enthusiasts will find this dam's design and purpose intriguing, as it represents a historical effort to manage water flow and reduce flood risks along Rock Creek.
As a part of the Natural Resources Conservation Service's portfolio, this dam showcases the agency's commitment to sustainable water resource management in the region. With a very high risk assessment rating and a lack of updated emergency action plans, there is a pressing need for modernization and maintenance to ensure the continued safety and effectiveness of SCS-Rock Creek Site-12 in the face of changing climate patterns and increasing water-related challenges.
Year Completed |
1962 |
Dam Length |
1800 |
Dam Height |
30 |
River Or Stream |
TR-ROCK CREEK |
Primary Dam Type |
Earth |
Surface Area |
28 |
Hydraulic Height |
26 |
Nid Storage |
769 |
Structural Height |
30 |
Outlet Gates |
Valve - 1 |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
30 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Rock Creek At Sulphur
|
8cfs |
Pennington Creek Near Reagan
|
47cfs |
Washita River Near Pauls Valley
|
324cfs |
Washita River Near Dickson
|
317cfs |
Blue River Near Connerville
|
47cfs |
Little River Near Sasakwa
|
8cfs |
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.
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Scs-Rock Creek Site-12