Anderson #1 Reservoir Report
Nearby: Berry Dam Corn Creek Dam
Last Updated: December 7, 2025
Anderson #1 is a privately owned earth dam located in Mellette, South Dakota.
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Summary
Built in 1956, this dam stands at a height of 45 feet, with a length of 528 feet, and has a storage capacity of 195 acre-feet. The dam is regulated by the South Dakota Department of Environment and Natural Resources, ensuring that it meets state permitting, inspection, and enforcement requirements.
Although Anderson #1 has a low hazard potential and is currently rated as "Not Rated" in terms of condition assessment, the dam plays a crucial role in managing water resources in the area. Situated on the TR Black Pipe Offstream, this dam helps to control water flow and provide essential water storage for irrigation and other purposes in the region. With its location in a rural area and minimal associated structures, Anderson #1 serves as a valuable asset for water management in South Dakota.
Managed by the Natural Resources Conservation Service, Anderson #1 is a key component of the local water infrastructure. With its historical significance and ongoing importance in water resource management, this dam serves as a reminder of the vital role that such structures play in ensuring water security and climate resilience in the region. As climate change continues to impact water availability, dams like Anderson #1 will be crucial for safeguarding water resources for future generations.
Year Completed |
1956 |
Dam Length |
528 |
Dam Height |
45 |
River Or Stream |
TR BLACK PIPE OFFSTREAM |
Primary Dam Type |
Earth |
Hydraulic Height |
45 |
Nid Storage |
195 |
Hazard Potential |
Low |
Nid Height |
45 |
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.
Anderson #1