Scs-Delaware Creek Site-007 Reservoir Report
Last Updated: December 6, 2025
SCS-Delaware Creek Site-007, located in Wapanucka, Oklahoma, is a state-regulated earth dam built in 1964 by the USDA NRCS.
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Summary
The dam stands at a height of 30 feet with a hydraulic height of 26 feet, serving the primary purpose of flood risk reduction along the TR-Sandy Creek. With a storage capacity of 164 acre-feet and a maximum discharge of 2050 cubic feet per second, this dam plays a crucial role in managing floodwaters and protecting the surrounding area from potential inundation.
Owned and regulated by the Oklahoma Water Resources Board (OWRB), SCS-Delaware Creek Site-007 has a low hazard potential and is currently in a condition that is not rated. The dam features a controlled spillway type with a width of 1 foot and an outlet gate consisting of a single valve. Despite its age, this dam continues to meet the necessary state permitting, inspection, and enforcement requirements, ensuring its effectiveness in mitigating flood risks and protecting the local community. With a risk assessment rating of very high (1), ongoing risk management measures are essential to maintain the integrity and functionality of this critical water resource infrastructure in Johnston County, Oklahoma.
Year Completed |
1964 |
Dam Length |
1870 |
Dam Height |
30 |
River Or Stream |
TR-SANDY CREEK |
Primary Dam Type |
Earth |
Surface Area |
4 |
Hydraulic Height |
26 |
Nid Storage |
164 |
Structural Height |
30 |
Outlet Gates |
Valve - 1 |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
30 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Blue River Near Connerville
|
54cfs |
Pennington Creek Near Reagan
|
7cfs |
Clear Boggy Creek Near Caney
|
423cfs |
Washita River Near Dickson
|
317cfs |
Blue River Near Blue
|
58cfs |
Rock Creek At Sulphur
|
8cfs |
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-Delaware Creek Site-007