Lake Michigan is ane o the five Great Lakes o North Americae, an the anly ane located entirely within the United States. Geologically, it is a lairge bay o Lake Michigan-Huron (i.e., among other things, they share an elevation level) . Bi itself, it is the seicond lairgest o the Great Lakes bi volume an the third lairgest bi surface area, behind Lake Superior an Lake Huron (an is slightly smaller than the US state o Wast Virginia). It is boondit, frae wast to east, bi the U.S. states o Wisconsin, Illinois, Indiana, an Michigan. The word "Michigan" originally referred to the lake itself, an is believed to come frae the Ojibwa word mishigami meaning "great water".