Eklund No.5 Reservoir Report
Nearby: Eckland A.W. No.1 Ecklund No. 2
Last Updated: December 13, 2025
Eklund No.5 is a privately owned earth dam located in Mellette, South Dakota, along the TR Big White Offstream river.
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Summary
Completed in 1956, this dam stands at a height of 24 feet and has a storage capacity of 66 acre-feet. With a low hazard potential and a condition assessment of "Not Rated," Eklund No.5 plays a crucial role in water resource management in the region.
Managed by the South Dakota Department of Environment and Natural Resources (DENR), Eklund No.5 is subject to state regulations, permitting, inspection, and enforcement. Despite its age, the dam continues to serve its primary purpose effectively, ensuring water storage and management for the surrounding area. The dam's location, design, and historical significance make it a noteworthy structure for water resource and climate enthusiasts.
Eklund No.5 is part of the St. Paul District under the US Army Corps of Engineers, providing additional oversight and support. While details on the dam's emergency action plan, risk assessment, and management measures are currently unavailable, its presence highlights the importance of maintaining and monitoring critical infrastructure for water resource sustainability in South Dakota.
Year Completed |
1956 |
Dam Length |
395 |
Dam Height |
24 |
River Or Stream |
TR BIG WHITE OFFSTREAM |
Primary Dam Type |
Earth |
Hydraulic Height |
24 |
Nid Storage |
66 |
Hazard Potential |
Low |
Nid Height |
24 |
Seasonal Comparison
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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.
Eklund No.5