The role of the Cooperative Science and Monitoring Initiative (CSMI) is to direct enhanced monitoring and research activities across each of the Laurentian Great Lakes to provide relevant information to address the science priorities of each Lake Partnership (established under the Lakewide Management Annex of the 2012 Great Lakes Water Quality Agreement). CSMI is an intensive effort to collect information on the health of one Great Lake each year, cycling through the lakes on a five-year period. In 2020/2021, it was Lake Michigan’s turn (over a two-year period due to COVID). This is an executive summary of the 2020/2021 research results and the associated white paper containing more specific information.

This document summarizes work completed by Illinois-Indiana Sea Grant (IISG) during the summer and fall of 2023 in support of the Great Lakes Water Quality Agreement (GLWQA) Annex 2 Lake Michigan Partnership. Specifically, IISG is supporting the Lake Michigan Partnership’s activities to determine science priorities for the Cooperative Science and Monitoring Initiative (CSMI) 2025 Field Year on Lake Michigan. The work described herein was sponsored by the International Joint Commission and comprised a 2-day in-person workshop plus a follow-up, online survey. Information contained in this report is intended as guidance only. While it is primarily written to help the Lake Michigan Partnership as the group sets research priorities for the 2025 intensive field year, other researchers and entities studying Lake Michigan might find the document useful.

Per- and polyfluoroalkyl substances (PFAS), a suite of manufactured chemicals with wide applications in consumer products ranging including clothing, cookware, cosmetics, and firefighting foams, are threatening the Great Lakes and Lake Champlaign region. These chemicals and their related precursor compounds have very strong bonds that make them waterproof, oil repellent, and high temperature and stain resistant. Their chemical structure also makes them very persistent in the environment, for which they are called “forever chemicals”. To explore the socioeconomic impacts of PFAS, Illinois-Indiana Sea Grant (IISG) is leading a Great Lakes and Lake Champlain regional research effort that is expected to support research to further advance the knowledge of social or economic issues related to PFAS risk, exposure, and remediation in these regions. The project advisory committee recommended a regional scoping effort to guide this effort; the purpose which was identifying and subsequentially prioritizing the knowledge gaps and potential socioeconomic barriers to PFAS efforts in the Great Lakes and Lake Champlain regions. Details of these scoping sessions are discussed in this report.

The Lake Michigan Partnership Working Group, which comprises representatives from federal, state, and tribal agencies in Michigan, Indiana, Illinois, and Wisconsin, identified 14 research priorities for the 2020 Cooperative Science and Monitoring Initiative (CSMI) Field Year on Lake Michigan. The worldwide COVID‐19 pandemic delayed most sampling plans in 2020; however, CSMI‐related sampling plans have been generated for Lakes Michigan and Superior in 2021. This document describes planned activities for Lake Michigan, to be completed by scientists from the NOAA Great Lakes Environmental Research Lab (NOAA‐GLERL), the US Geological Survey Great Lakes Science Center (USGS‐GLSC), the US Environmental Protection Agency’s Great Lakes National Program Office and Office of Research and Development (EPA‐ GLNPO and EPA‐ORD, respectively), and university partners.

This story map relays key findings from the 2015 Lake Michigan field year of the Cooperative Science and Monitoring Initiative. This digital, multi-media outreach tool is intended to convey research results to broad audiences including anglers, boaters, conservation groups, and other Lake Michigan stakeholders.

For more detailed information, visit Lake Michigan Health: A Deeper Dive

On October 16 and 17, 2018, nearly 60 scientists and managers met at a workshop in Milwaukee, WI to discuss research needs for Lake Michigan. The workshop, sponsored by the International Joint Commission through its Science Advisory Board Research Coordination Committee and organized by Illinois-Indiana Sea Grant, was part of the Cooperative Science Monitoring Initiative (CSMI). The main purpose of the meeting was to kick off discussions about research priorities to be considered during the 2020 CSMI intensive field year on Lake Michigan. This document summarizes the meeting proceedings.