Plummer Basin Sw Clear Water Pond, located in Itasca County, Minnesota, is a privately owned dam designed by MAGNETATION for tailings storage. Constructed in 1947, this earth dam stands at a height of 40 feet and stretches 2100 feet in length, with a storage capacity of 120 acre-feet. The pond covers a surface area of 12 acres and drains an area of the same size, with a controlled spillway in place to manage water discharge.

Despite being classified as having a low hazard potential, this dam is under state regulation and inspection, ensuring its safety and compliance with required standards. The risk assessment for this structure is deemed very high, emphasizing the importance of ongoing monitoring and maintenance. While the condition assessment is currently not rated, regular inspections every 8 years help to mitigate any potential risks associated with the dam.

Water resource and climate enthusiasts can appreciate the significance of Plummer Basin Sw Clear Water Pond in managing tailings and water storage in the region. Its location on the Swan River-OS tributary and the efforts of the MNDNR EWR in overseeing its operations highlight the interconnectedness of water resources and environmental management in Minnesota. As part of the larger St. Paul District, this dam showcases the importance of infrastructure in balancing human needs with environmental conservation in a changing climate.