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
Little League World Series (Great Lakes Region) Lakes Region has a unique definition that does not correspond with the normally understood definition of the "Great Lakes" area, even when the context is restricted to the U.S. Although eight U.S. states (and the Canadian province of Ontario) border on the Great Lakes, only five of the U.S. states are in Little League's Great Lakes Region: One state that does not border any of the Great Lakes, and in fact has no territory within the Great Lakes watershed, is included in this region: Two states that border on the Great Lakes, New York and Pennsylvania are part of the