Portsmouth Mine Pit Lake

Portsmouth Mine Pit Lake is a man-made lake located in Crosby, Minnesota. The lake was formed in the 1930s when the Portsmouth Mine was abandoned and the mine pit filled with water. The lake is over 300 feet deep in some areas and covers approximately 400 acres. The lake is a popular destination for recreational activities such as fishing, swimming, boating, and diving. The lake is stocked with fish such as walleye, northern pike, and bass, making it a prime location for fishing enthusiasts. In addition to its recreational value, the Portsmouth Mine Pit Lake also plays an important role in the environmental remediation of the region. The lake serves as a sinkhole for groundwater that carries heavy metals and other contaminants from the surrounding mine sites, helping to protect the local ecosystem. Overall, the Portsmouth Mine Pit Lake is a unique and valuable attraction in the Crosby area, offering both recreational and environmental benefits to the community