Clark Dean Jr Reservoir Report
Nearby: Boggess No 1 Davis Elvin J
Last Updated: December 5, 2025
Clark Dean Jr is a privately-owned dam located in Dewey, Oklahoma, along the SORTER CR river.
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Summary
Designed by the USDA NRCS and completed in 1986, this earth dam stands at 33 feet high and spans 328 feet in length, providing a storage capacity of 279 acre-feet for water resource management. With a controlled spillway and a low hazard potential, Clark Dean Jr serves multiple purposes beyond flood control, making it a valuable asset in the region.
Managed by the Oklahoma Water Resources Board, Clark Dean Jr undergoes regular inspections and enforcement to ensure its structural integrity and compliance with state regulations. The dam's very high risk assessment rating highlights the importance of proper risk management measures, although its condition assessment remains unrated. With one valve outlet gate and a surface area of 31 acres, this dam plays a crucial role in water conservation efforts in the area, with a maximum discharge capacity of 950 cubic feet per second.
Overall, Clark Dean Jr stands as a key component in Oklahoma's water infrastructure, offering storage, flood control, and other essential services for the local community. As a privately-owned structure with state oversight, this dam exemplifies the collaboration between government agencies and private owners in managing water resources and climate challenges effectively. With its strategic location and design features, Clark Dean Jr remains a vital asset for water enthusiasts and climate advocates in the region.
Year Completed |
1986 |
Dam Length |
328 |
Dam Height |
33 |
River Or Stream |
SORTER CR |
Primary Dam Type |
Earth |
Surface Area |
31 |
Hydraulic Height |
33 |
Drainage Area |
1.82 |
Nid Storage |
279 |
Structural Height |
33 |
Outlet Gates |
Valve - 1 |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
33 |
Seasonal Comparison
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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.
Clark Dean Jr