Scs-Caddo Creek Site-21 Reservoir Report
Last Updated: December 20, 2025
SCS-Caddo Creek Site-21, located in Ardmore, Carter County, Oklahoma, is a state-regulated earth dam designed by the USDA NRCS for flood risk reduction on the TR-Caddo Creek.
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Summary
Completed in 1965, this dam stands at a height of 24 feet with a hydraulic height of 21 feet, providing a maximum storage capacity of 315 acre-feet and a normal storage capacity of 36 acre-feet. The dam, with a length of 1180 feet and a surface area of 12 acres, features a controlled spillway and a single valve outlet gate.
Despite its low hazard potential and very high risk assessment rating, SCS-Caddo Creek Site-21 has not undergone a recent condition assessment and is currently not rated for its structural integrity. The last inspection was conducted on January 1, 1980, with a scheduled inspection frequency of 5 years. While the dam has not been modified in recent years, it is crucial for the responsible state agency, OWRB, to prioritize the assessment and maintenance of this vital infrastructure to ensure its continued effectiveness in flood risk reduction for the surrounding area and the safety of the community.
Year Completed |
1965 |
Dam Length |
1180 |
Dam Height |
24 |
River Or Stream |
TR-CADDO CREEK |
Primary Dam Type |
Earth |
Surface Area |
12 |
Hydraulic Height |
21 |
Nid Storage |
315 |
Structural Height |
24 |
Outlet Gates |
Valve - 1 |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
24 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Washita River Near Dickson
|
317cfs |
Mud Creek Near Courtney
|
0cfs |
Rock Creek At Sulphur
|
8cfs |
Washita River Near Pauls Valley
|
327cfs |
Pennington Creek Near Reagan
|
10cfs |
Red River Near Gainesville
|
256cfs |
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-Caddo Creek Site-21