What agreement designated the Kalamazoo River as an area of concern?

The Great Lakes Water Quality Agreement designated the Kalamazoo River as an area of concern due to its significant environmental challenges associated with pollution and degradation of water quality. This agreement, established between the United States and Canada, aims to restore and protect the waters of the Great Lakes. The Kalamazoo River was identified as needing special attention due to issues like toxic contamination, which warranted its inclusion in the agreement's efforts to improve water quality and ecosystem health in the region. It highlights the collaborative commitment to maintaining the integrity of the Great Lakes and addressing pollution, which is crucial for both environmental sustainability and public health.