Scs-Winter Creek Site-20 Reservoir Report
Last Updated: January 5, 2026
SCS-Winter Creek Site-20 is a state-regulated earth dam located in Grady, Oklahoma, designed by USDA NRCS in 1965 for flood risk reduction along the TR-LAFLIN CR stream.
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Summary
With a height of 48 feet and a length of 1510 feet, this dam has a storage capacity of 1268 acre-feet and a maximum discharge rate of 2517 cubic feet per second. The dam features a controlled spillway and a single valve outlet gate, with a hazard potential rated as low and a very high risk assessment score of 1.
Managed by the Oklahoma Water Resources Board, SCS-Winter Creek Site-20 is inspected every 5 years, with the last assessment conducted in 1980. While the condition of the dam is currently not rated, it is under state jurisdiction and enforcement, ensuring its safety and reliability for flood control purposes. The dam's location in Bradley, Oklahoma, highlights its importance in protecting the surrounding area from potential inundation, making it a key piece of infrastructure in the region's water resource management efforts.
Year Completed |
1965 |
Dam Length |
1510 |
Dam Height |
48 |
River Or Stream |
TR-LAFLIN CR |
Primary Dam Type |
Earth |
Surface Area |
29 |
Hydraulic Height |
44 |
Nid Storage |
1268 |
Structural Height |
48 |
Outlet Gates |
Valve - 1 |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
48 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
North Criner Creek Near Criner
|
1cfs |
Washita River At Alex
|
231cfs |
Little Washita River East Of Ninnekah
|
21cfs |
Walnut Creek At Purcell
|
29cfs |
Canadian River At Purcell
|
197cfs |
Canadian River At Norman
|
193cfs |
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-20