Scs-Kickapoo Sandy Creek Site-N4 Reservoir Report
Last Updated: January 2, 2026
The SCS-Kickapoo Sandy Creek Site-N4 is a state-owned earth dam located in Garvin, Oklahoma, specifically in the city of Wynnewood.
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Summary
Designed by the USDA NRCS and completed in 1980, this dam serves the primary purpose of flood risk reduction along the TR-Negro Sandy Creek. With a height of 24 feet and a hydraulic height of 21 feet, it has a storage capacity of 215 acre-feet and a normal storage level of 31 acre-feet.
This dam, with a length of 800 feet and a spillway width of 1 foot, is regulated by the Oklahoma Water Resources Board (OWRB) and has a high hazard potential due to its location and purpose. Despite being in fair condition according to the last inspection in 2011, the risk assessment for this dam is categorized as very high, indicating the need for heightened monitoring and potential risk management measures. With a controlled spillway and one valve outlet gate, this dam plays a crucial role in mitigating flood risks in the region.
Climate and water resource enthusiasts would find the SCS-Kickapoo Sandy Creek Site-N4 to be an important structure in the region's flood risk management efforts. Its strategic location and design by the USDA NRCS make it a vital asset for protecting the surrounding areas from potential flooding events. However, the high hazard potential and very high risk assessment emphasize the importance of regular inspections and potentially implementing risk management measures to ensure the continued safety and functionality of this earth dam.
Year Completed |
1980 |
Dam Length |
800 |
Dam Height |
24 |
River Or Stream |
TR-NEGRO SANDY CREEK |
Primary Dam Type |
Earth |
Surface Area |
11 |
Hydraulic Height |
21 |
Nid Storage |
215 |
Structural Height |
24 |
Outlet Gates |
Valve - 1 |
Hazard Potential |
High |
Foundations |
Soil |
Nid Height |
24 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Washita River Near Pauls Valley
|
319cfs |
Rock Creek At Sulphur
|
7cfs |
Walnut Creek At Purcell
|
29cfs |
Canadian River At Purcell
|
204cfs |
North Criner Creek Near Criner
|
1cfs |
Washita River Near Dickson
|
314cfs |
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-Kickapoo Sandy Creek Site-N4