The Portage Lakes are a group of glacial kettle lakes and reservoirs in Northeast Ohio. The name comes from an old Indian portage path that connected the Cuyahoga River flowing north to Lake Erie and the Tuscarawas River, a tributary of the Muskingum River, which flows south to the Ohio River. This proved advantageous for the Indians and early settlers as navigation from Lake Erie to the Ohio was possible with only an eight-mile portage. Portage Lakes State Park lies at one of the highest points of the state and on a major watershed divide in Ohio. Some water from the lakes reaches Lake Erie and some flows to the Ohio River.