First of all, let me give some background. Originally there were two bays in Grand Marais, MI. Originally, the west bay was land-locked. When Europeans founded Grand Marais, the first location was on East Bay. Then in the 1800s they dug the channel to access West Bay. In the photo below you can see both West Bay and East Bay.
A mile and a half east of Grand Marais, the Sucker River's mouth empties into Lake Superior. During the last few years, the river has been migrating west. We are happy about this since in our opinion the bay would be "healthier" if a river flowed into it to "clean out the bay." In the late 1800s there were three rivers flowing into the bay. The photo below shows the river moving west, as of March 2011.