Scs-Big Wewoka Creek Site-18 Reservoir Report
Last Updated: December 8, 2025
SCS-Big Wewoka Creek Site-18, located in Seminole, Oklahoma, is a state-regulated earth dam designed by USDA NRCS in 1964.
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Summary
With a primary purpose of flood risk reduction, this dam stands at a height of 28 feet and spans 700 feet in length. It has a storage capacity of 269 acre-feet, with a normal storage level of 58 acre-feet.
Managed by the Oklahoma Water Resources Board, this dam on TR-WEWOKA CR has a controlled spillway and one valve outlet gate. Despite being rated as having low hazard potential, the risk assessment for this site is classified as very high (1). It is important for water resource and climate enthusiasts to monitor the condition of this dam, as its last inspection dates back to 1980 and its condition is currently listed as not rated.
The unique location and design features of SCS-Big Wewoka Creek Site-18 make it a significant site for flood risk reduction in the area. Its association with the USDA NRCS and state regulatory agencies emphasizes the importance of ensuring proper maintenance and inspection to prevent any potential risks associated with its operation. For those interested in water resource management and climate resilience, this dam serves as a focal point for understanding the intersection of infrastructure, environmental stewardship, and public safety.
Year Completed |
1964 |
Dam Length |
700 |
Dam Height |
28 |
River Or Stream |
TR-WEWOKA CR |
Primary Dam Type |
Earth |
Surface Area |
11 |
Hydraulic Height |
28 |
Nid Storage |
269 |
Structural Height |
28 |
Outlet Gates |
Valve - 1 |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
28 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
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-Big Wewoka Creek Site-18