Scs-Rock Creek Site-13 Reservoir Report
Last Updated: December 17, 2025
SCS-Rock Creek Site-13, located in Sulphur, Oklahoma, is a state-owned Earth dam constructed in 1961 by the USDA NRCS.
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Summary
The primary purpose of this structure is flood risk reduction along Hogskin Creek, with a maximum storage capacity of 509 acre-feet and a normal storage level of 50 acre-feet. The dam stands at a height of 27 feet and has a controlled spillway width of 1 foot, designed to handle a maximum discharge of 1800 cubic feet per second.
This dam, managed by the Oklahoma Water Resources Board, has been deemed to have a low hazard potential but a very high risk assessment rating of 1. Although the condition assessment is not rated, the structure undergoes inspections every 5 years, with the last recorded inspection date in 1980. Despite its age, SCS-Rock Creek Site-13 remains an essential component of water resource management in Murray County, providing critical flood protection for the surrounding area.
For water resource and climate enthusiasts, SCS-Rock Creek Site-13 serves as a fascinating example of early 1960s dam construction and the ongoing efforts to maintain and regulate such infrastructure in Oklahoma. The interaction between the state regulatory agency, federal designers, and local stakeholders showcases the collaborative approach necessary to ensure the safety and effectiveness of flood control measures in the region.
Year Completed |
1961 |
Dam Length |
1170 |
Dam Height |
27 |
River Or Stream |
HOGSKIN CREEK |
Primary Dam Type |
Earth |
Surface Area |
11 |
Hydraulic Height |
23 |
Nid Storage |
509 |
Structural Height |
27 |
Outlet Gates |
Valve - 1 |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
27 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Rock Creek At Sulphur
|
8cfs |
Washita River Near Pauls Valley
|
327cfs |
Pennington Creek Near Reagan
|
47cfs |
Blue River Near Connerville
|
47cfs |
Washita River Near Dickson
|
314cfs |
Little River Near Sasakwa
|
9cfs |
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-13