Plummer Basin W Tailings, located in Taconite, Minnesota, is a privately owned tailings dam regulated by the Minnesota Department of Natural Resources. The dam, primarily used for tailings storage, is an earth dam with a height of 45 feet and a length of 10,670 feet, providing a storage capacity of 8,250 acre-feet. Despite being classified as low hazard potential, the dam has not been rated for its condition, with the last inspection conducted in June 2016.

With a surface area of 330 acres and draining an area of 0.5 square miles, Plummer Basin W Tailings poses minimal risk, according to available data. The dam does not have a designated spillway, and emergency action plans and risk assessments are currently not available for public review. While the dam has not been modified in recent years, regular inspections every 8 years ensure its structural integrity. As water resource and climate enthusiasts, the data on Plummer Basin W Tailings offers insight into the management and regulation of tailings dams in Minnesota.