Sherman Mine Wastewater, located in St. Louis County, Minnesota, is a privately owned tailings dam constructed in 1953 with a primary purpose of storing tailings. The dam stands at a height of 20 feet and spans a length of 3200 feet, providing a storage capacity of 115 acre-feet. The dam is regulated by the Minnesota Department of Natural Resources and undergoes regular inspections to ensure compliance with state regulations.

Despite being classified as a low hazard potential structure, Sherman Mine Wastewater has not been rated for its condition assessment. The dam's last inspection was conducted in August 2019, with an inspection frequency of every 8 years. While the dam does not have an Emergency Action Plan (EAP) in place, it meets state permitting and inspection requirements. The dam's emergency contacts, risk assessment, and management measures are currently not documented.

Water resource and climate enthusiasts may be interested in monitoring the maintenance and regulatory oversight of Sherman Mine Wastewater to ensure the safe containment of tailings and the protection of nearby water resources. The dam's location near Dempsey Creek-TR and its low hazard potential highlight the importance of ongoing monitoring and adherence to state regulations to prevent any potential environmental impact from wastewater discharge.