Scs-Delaware Creek Site-008 Reservoir Report
Last Updated: December 6, 2025
SCS-Delaware Creek Site-008 in Johnston, Oklahoma, is a state-regulated earth dam designed by the USDA NRCS for flood risk reduction on the Little Delaware Creek.
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Summary
Completed in 1965, this 48-foot tall structure serves its primary purpose effectively with a normal storage capacity of 79 acre-feet and a maximum storage of 931 acre-feet. The dam's spillway type is controlled, with a width of 1 foot and a maximum discharge capacity of 4280 cubic feet per second.
Despite being classified as having a low hazard potential, the risk assessment for SCS-Delaware Creek Site-008 indicates a very high risk level. The dam's condition assessment is currently not rated, with the last inspection conducted in 1980. Emergency action preparedness, inundation maps, and risk management measures for this site are also lacking detailed information. As water resource and climate enthusiasts, further attention and action may be necessary to ensure the safety and resilience of this critical infrastructure in the face of potential hazards and climate challenges.
Year Completed |
1965 |
Dam Length |
1900 |
Dam Height |
48 |
River Or Stream |
LITTLE DELAWARE CREEK |
Primary Dam Type |
Earth |
Surface Area |
14 |
Hydraulic Height |
44 |
Nid Storage |
931 |
Structural Height |
48 |
Outlet Gates |
Valve - 1 |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
48 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Blue River Near Connerville
|
54cfs |
Pennington Creek Near Reagan
|
7cfs |
Clear Boggy Creek Near Caney
|
423cfs |
Rock Creek At Sulphur
|
8cfs |
Washita River Near Dickson
|
317cfs |
Blue River Near Blue
|
58cfs |
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-008