Lake Michigan lies entirely in the US.
Only Lake Michigan is entirely inside the US. All of the other Great Lakes also border on Ontario, Canada.
None. There are no parts of any great lakes in Colorado.
lake Michigan
Lake Michigan
Lake Michigan
Lake Michigan
Lake Michigan. =========== In actual fact, none of the Great Lakes is entirely within the US, and there really are only four Great Lakes. What we call Lake Michigan and Lake Huron are, hydrologically, just one body of water with two large lobes.
Lake Michigan.
None of the five Great Lakes is entirely within Canada. Canada shares four of the five Great Lakes with the US. Lake Michigan is entirely within the US. Hydrologically, however, Lake Huron and Lake Michigan are one lake, which has two large lobes. As such, there are really only four Great Lakes, and all four are shared between Canada and the US.
Lake MIchiagan
Lake Michigan.
Lakes Superior, Huron, Erie and Ontario are partly in the USA and partly in Canada. Lake Michigan is said to be entirely within the USA. However, it is also said that Lakes Michigan and Huron are, hydrologically, one body of water. If so, none of the Great Lakes would be entirely within the USA.
The five lakes you are inerested in are the Greta Lakes. Only Lake Michigan is entirely in the US. Lakes Superior, Huron, Erie and Ontario straddle the US/Canadian border. There is a sixth lake in the group (St. Clair) which is considerably smaller, it is also on the border.