Anderson #6 Reservoir Report
Nearby: Anderson #7 Anderson #5
Last Updated: December 15, 2025
Anderson #6 is a privately owned earth dam located in Harper County, Oklahoma, near the city of Woodward.
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Summary
Built in 1967 by the USDA NRCS, this dam serves multiple purposes including fire protection, stock, and small fish pond. With a height of 35 feet and a length of 199 feet, the dam has a storage capacity of 41 acre-feet and covers a surface area of 2 acres with a drainage area of 0.31 square miles.
Situated on Sleeping Bear Creek, Anderson #6 has a spillway width of 35 feet and is classified as having a low hazard potential. Despite its moderate risk rating, the dam's condition assessment is currently marked as "Not Rated," indicating a need for further evaluation and maintenance. While there have been no recent inspections or modifications reported, the dam is not under state jurisdiction or permitting, posing potential challenges for ensuring its safety and compliance with regulations.
Overall, Anderson #6 presents an intriguing case study for water resource and climate enthusiasts, showcasing the complex interplay between private ownership, multiple dam purposes, and regulatory oversight. As climate change continues to impact water resources, understanding the condition and risk assessment of dams like Anderson #6 is crucial for effective management and mitigation of potential hazards.
Year Completed |
1967 |
Dam Length |
199 |
Dam Height |
35 |
River Or Stream |
SLEEPING BEAR CREEK |
Surface Area |
2 |
Hydraulic Height |
35 |
Drainage Area |
0.31 |
Nid Storage |
41 |
Hazard Potential |
Low |
Nid Height |
35 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
North Canadian River At Woodward
|
68cfs |
Cimarron River Near Buffalo
|
75cfs |
Cimarron River Near Waynoka
|
118cfs |
Cimarron R Near Buttermilk
|
44cfs |
Bluff Creek Nr Buttermilk
|
40cfs |
North Canadian River Near Seiling
|
102cfs |
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.
Anderson #6