Eckland A.W. No.1 Reservoir Report
Nearby: Eklund No.5 Eklund #4
Last Updated: December 13, 2025
Eckland A.W.
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Summary
No.1 is a privately owned dam located in Mellette, South Dakota, along the TR White River offstream. Built in 1964, this earth dam stands at 27 feet in height and stretches 535 feet in length, with a storage capacity of 38 acre-feet. While the dam is regulated by the state and falls under the jurisdiction of the Department of Environment and Natural Resources (DENR), it has not been rated for its condition assessment and is considered to have a low hazard potential.
The dam does not have a designated primary purpose or associated structures, and its inspection frequency, emergency action plan, and risk assessment details are currently unavailable. The area is represented by Congressman Dusty Johnson (R) and falls under the St. Paul District of the US Army Corps of Engineers. With a maximum discharge of 288 cubic feet per second, Eckland A.W. No.1 plays a crucial role in water resource management in the region, despite its modest size and capacity. Climate and water resource enthusiasts may find this dam's historical significance and regulatory status of interest in understanding its role in the local ecosystem and water supply.
Year Completed |
1964 |
Dam Length |
535 |
Dam Height |
27 |
River Or Stream |
TR WHITE RIVER OFFSTREAM |
Primary Dam Type |
Earth |
Hydraulic Height |
27 |
Nid Storage |
38 |
Hazard Potential |
Low |
Nid Height |
27 |
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.
Eckland A.W. No.1