The Boundary Waters Wilderness Protection and Pollution Prevention Act aims to safeguard the Boundary Waters Canoe Area Wilderness and related federal lands and waters in Minnesota, particularly within the Rainy River Watershed. The primary goal is to prevent pollution and protect the unique natural resources of this area from the potential impacts of mining activities. Key provisions of the act include the withdrawal of approximately 225,504 acres of federal land and waters in the Rainy River Watershed from mining and other forms of development.