Anderson #12 Reservoir Report
Nearby: Anderson #11 Anderson #10
Last Updated: December 14, 2025
Anderson #12 is a privately owned earth dam located in Woodward, Oklahoma, along Traders Creek.
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Summary
Constructed in 1959 by the USDA NRCS, this dam stands at 32 feet tall with a length of 181 feet, providing a storage capacity of 51 acre-feet. The dam serves a low hazard potential with a moderate risk assessment rating.
Despite not being regulated or inspected by the state, Anderson #12 plays a crucial role in managing water resources in the area, offering flood protection and water storage for agricultural and environmental purposes. With an uncontrolled spillway and a surface area of 3 acres, this dam contributes to the overall water management efforts in Harper County.
Although the dam's condition assessment is listed as "Not Rated," its moderate risk assessment suggests the need for ongoing monitoring and maintenance to ensure its continued effectiveness. As water resource and climate enthusiasts, understanding the role of structures like Anderson #12 in our local ecosystems is essential for sustainable water management practices and climate resilience.
Year Completed |
1959 |
Dam Length |
181 |
Dam Height |
32 |
River Or Stream |
TRADERS CREEK |
Surface Area |
3 |
Hydraulic Height |
32 |
Drainage Area |
0.49 |
Nid Storage |
51 |
Hazard Potential |
Low |
Nid Height |
32 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
North Canadian River At Woodward
|
67cfs |
Cimarron River Near Buffalo
|
78cfs |
Cimarron River Near Waynoka
|
110cfs |
Cimarron R Near Buttermilk
|
46cfs |
Bluff Creek Nr Buttermilk
|
40cfs |
North Canadian River Near Seiling
|
101cfs |
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 #12