Scs-Sandy Creek Site-17 Reservoir Report
Last Updated: December 8, 2025
SCS-Sandy Creek Site-17, located in Vanoss, Oklahoma, is a state-regulated Earth dam designed by USDA NRCS in 1966 for the primary purpose of flood risk reduction along Coon Creek.
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Summary
With a structural height of 38 feet and a length of 1200 feet, this dam has a storage capacity of 1459 acre-feet and a normal storage level of 106 acre-feet. It features a controlled spillway with a width of 1 foot and one outlet valve for water release.
Despite being classified as having a low hazard potential, SCS-Sandy Creek Site-17 is considered to have a very high risk level due to its age and lack of recent inspection data. The dam has not been rated for its current condition, and there is no Emergency Action Plan (EAP) in place. It is crucial for the state regulatory agency, OWRB, to conduct regular inspections and ensure that necessary risk management measures are implemented to mitigate potential hazards associated with this dam and protect the surrounding community from flooding events.
Year Completed |
1966 |
Dam Length |
1200 |
Dam Height |
38 |
River Or Stream |
COON CR |
Primary Dam Type |
Earth |
Surface Area |
28 |
Hydraulic Height |
38 |
Nid Storage |
1459 |
Structural Height |
38 |
Outlet Gates |
Valve - 1 |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
38 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Rock Creek At Sulphur
|
8cfs |
Washita River Near Pauls Valley
|
335cfs |
Little River Near Sasakwa
|
15cfs |
Pennington Creek Near Reagan
|
7cfs |
Little River Near Tecumseh
|
7cfs |
Canadian River At Purcell
|
208cfs |
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-17