Erie Basin 2, also known as Cell 2w, is a privately owned tailings dam located in Hoyt Lakes, Minnesota. Completed in 1978, this earth dam stands at a height of 250 feet and stretches across a length of 20,500 feet. With a storage capacity of 25,035 acre-feet and a drainage area of 2.3 square miles, Erie Basin 2 plays a crucial role in managing tailings from mining operations in the area.

Managed by the Minnesota Department of Natural Resources, Erie Basin 2 is regulated, inspected, and enforced to ensure its safety and functionality. The dam has a significant hazard potential but has been assessed as satisfactory in condition. Regular inspections have been conducted, with the last one taking place in October 2018. The dam's emergency action plan status, risk assessment, and inundation maps prepared are additional factors that contribute to its overall management and safety protocols.

As a key structure in the region, Erie Basin 2 serves an essential purpose in storing tailings and protecting the environment from potential hazards. Its strategic location along the Embarrass River-TR and its adherence to state regulatory guidelines underscore its importance in water resource management and climate resilience efforts in St. Louis County, Minnesota.