Scs-Winter Creek Site-22 Reservoir Report
Last Updated: December 8, 2025
SCS-Winter Creek Site-22, located in Grady County, Oklahoma, is a state-regulated earth dam designed by USDA NRCS with a primary purpose of flood risk reduction along the TR-Washita River.
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Summary
Completed in 1977, this dam stands at a height of 38 feet with a length of 980 feet, providing a maximum storage capacity of 315 acre-feet and a normal storage capacity of 58 acre-feet. With a low hazard potential and a very high risk assessment rating, this dam is equipped with a controlled spillway and a single valve outlet gate for water management.
Although the condition of SCS-Winter Creek Site-22 is currently not rated, it undergoes inspection every 5 years to ensure its structural integrity and functionality. The dam is situated within the jurisdiction of the Oklahoma Water Resources Board (OWRB) and is subject to state permitting, inspection, and enforcement. With a drainage area of 1.06 square miles and a maximum discharge capacity of 350 cubic feet per second, this dam plays a crucial role in mitigating flood risks and protecting the surrounding area from potential water-related hazards. For water resource and climate enthusiasts, SCS-Winter Creek Site-22 serves as a vital infrastructure contributing to sustainable water management in the region.
Year Completed |
1977 |
Dam Length |
980 |
Dam Height |
38 |
River Or Stream |
TR-WASHITA RIVER |
Primary Dam Type |
Earth |
Surface Area |
11 |
Hydraulic Height |
38 |
Drainage Area |
1.06 |
Nid Storage |
315 |
Structural Height |
38 |
Outlet Gates |
Valve - 1 |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
38 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Washita River At Alex
|
241cfs |
North Criner Creek Near Criner
|
1cfs |
Little Washita River East Of Ninnekah
|
18cfs |
Walnut Creek At Purcell
|
29cfs |
Canadian River At Purcell
|
208cfs |
Canadian River At Norman
|
211cfs |
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-Winter Creek Site-22