Great Lakes tectonic zone southern Ontario. Several earthquakes have been documented in Minnesota in the last 120 years, with at least six in the GLTZ. The epicenters show a clear relationship to tectonic features of the state; four epicenters lie along the Great Lakes tectonic zone. Depths are estimated at . The best-documented event occurred on July 9, 1975, near Morris, Minnesota, with a magnitude of 4.6, and a felt area of covering parts of four states. Wisconsin has had no earthquakes along the GLTZ, Michigan's Upper Peninsula has had four earthquakes in the vicinity of the GLTZ – Negaunee, Newberry and two in
Great Lakes Protection Fund the 1986 Toxic Substances Control Agreement, signed by the Great Lakes governors. Seven Great Lakes states contributed $81,000,000 to capitalize the Fund. Each state contributed to the Fund based on its usage of Great Lakes water. The Great Lakes Research Consortium hailed the Fund as a "unique and precedent-setting conclusion to the search for a stable, long-term funding mechanism for Great Lakes research." The Great Lakes Protection Fund held its first meeting on July 12, 1989, in Chicago. The earnings from the endowment, now worth over $100 million, have supported 274 regional projects, committing more than $83 million to regional