Scs-Quartermaster Creek Site-21a Reservoir Report
Last Updated: December 7, 2025
SCS-Quartermaster Creek Site-21a is a significant earth dam located in Dewey, Oklahoma, designed by the USDA NRCS and completed in 1962 for the primary purpose of flood risk reduction.
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Summary
This dam stands at a structural height of 41 feet and spans a length of 3855 feet, with a maximum storage capacity of 438 acre-feet and a normal storage of 80 acre-feet. The dam is regulated by the Oklahoma Water Resources Board and undergoes regular state inspections, with a hazard potential rated as significant and a condition assessment of fair.
Situated along the North Branch Quartermaster Creek, this dam plays a crucial role in mitigating flood risks in the area, with a maximum discharge capacity of 2160 cubic feet per second. The dam features a controlled spillway and a single valve outlet gate for water release. Despite its fair condition assessment, the dam is considered to have a very high risk level (1) and is closely monitored by state regulatory agencies for enforcement and inspection to ensure its safety and functionality in protecting the surrounding community of LeeDee and beyond. Enthusiasts of water resources and climate will find SCS-Quartermaster Creek Site-21a to be a fascinating example of engineering ingenuity in managing water flow and flood control in Oklahoma.
Year Completed |
1962 |
Dam Length |
3855 |
Dam Height |
41 |
River Or Stream |
NORTH BRANCH QUARTERMASTER CR |
Primary Dam Type |
Earth |
Surface Area |
13 |
Hydraulic Height |
37 |
Nid Storage |
438 |
Structural Height |
41 |
Outlet Gates |
Valve - 1 |
Hazard Potential |
Significant |
Foundations |
Soil |
Nid Height |
41 |
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-Quartermaster Creek Site-21a