Ko te roto o Michigan he papa o 22,404 sq.mi (58,026 km2); (13,237 maero tapawha, 34,284 km2 kei roto i te kawanatanga o Michigan, 7,358 maero tapawha, 19,056 km2 i Wisconsin, 234 maero tapawha, 606 km2 i Indiana, & 1,576 maero tapawha, 4,079 km2 i Illinois) koinei te roto nui rawa atu i roto i te whenua kotahi mo te rohe mata (Ko te roto o Baikal, i Russia, he nui ake i te rahinga o te wai), me te rima o nga roto nui rawa atu i te ao. Ko te haurua nui o te roto o Michigan <unk>Huron, koinei te tinana wai reka nui rawa atu o te ao e te rohe o te mata. He 307 maero (494 km) te roa e 118 maero (190 km) te whanui o te takutai 1,640 maero (2,640 km) te roa. Ko te hohonu o te roto o te roto o te roto ko te 46 feet 3 fathoms hohonu (279 ft; 19,056 km2 i Wisconsin, 234 maero tapa
494 km te tawhiti