Scs-Sandy Creek Site-27 Reservoir Report
Last Updated: January 11, 2026
SCS-Sandy Creek Site-27, located in Garvin, Oklahoma, is a state-regulated Earth dam designed by USDA NRCS in 1960 for Flood Risk Reduction along the TR-SPRING BROOK CREEK.
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Summary
Standing at a height of 23 feet and a length of 1200 feet, this dam has a storage capacity of 353 acre-feet and a maximum discharge of 1040 cubic feet per second. Despite being rated as having a low hazard potential, it is categorized as having a very high risk due to its critical importance in flood risk management.
Managed by the Oklahoma Water Resources Board, this dam remains under state jurisdiction with regular inspections and enforcement. While its condition is currently not rated, the dam is equipped with a controlled spillway and one outlet valve. With its primary purpose being flood risk reduction, SCS-Sandy Creek Site-27 plays a crucial role in protecting the surrounding community of OIL CENTER from potential flood events. As an integral part of the state's water resource infrastructure, this dam serves as a key component in ensuring the safety and resilience of the area against extreme weather and climate impacts.
Year Completed |
1960 |
Dam Length |
1200 |
Dam Height |
23 |
River Or Stream |
TR-SPRING BROOK CREEK |
Primary Dam Type |
Earth |
Surface Area |
15 |
Hydraulic Height |
23 |
Nid Storage |
353 |
Structural Height |
23 |
Outlet Gates |
Valve - 1 |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
23 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Washita River Near Pauls Valley
|
350cfs |
Rock Creek At Sulphur
|
7cfs |
Little River Near Tecumseh
|
11cfs |
Canadian River At Purcell
|
235cfs |
Walnut Creek At Purcell
|
31cfs |
Little River Near Sasakwa
|
24cfs |
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-Sandy Creek Site-27