Great Lakes Areas of Concern
Register for the 2022 Great Lakes AOC Conference
Conference dates: May 24 - 26. Registration information.
Accelerated Cleanup and Restoration of the Great Lakes
Spirit Lake in St. Louis Area of Concern Cleanup Continues
The large Spirit Lake environmental cleanup includes dredging, capping and monitoring impacted sediment. The cleanup supports the eventual delisting of the St. Louis River AOC and will result in benefits to people and the ecological system.
The U.S.-Canada Great Lakes Water Quality Agreement (Annex 1 of the 2012 Protocol) defines AOCs as "geographic areas designated by the Parties where significant impairment of beneficial uses has occurred as a result of human activities at the local level." An AOC is a location that has experienced environmental degradation. EPA and other federal and state agencies are working to restore the 26 remaining U.S. AOCs in the Great Lakes basin.