The Inland Route, Michigan is a series of interconnected lakes and streams stretching across the northern tip of the Lower Peninsula of Michigan, and extends from Conway near Lake Michigan to Cheboygan on Lake Huron; a distance of 35 miles. Crooked and Indian Rivers are connecting channels in the waterway. The project was authorized by the River and Harbor Act of 3 September 1954. The provides for a channel 30 feet wide and 5 feet deep, with necessary widening at bends, through Crooked and Indian Rivers and through Crooked and Mullet Lakes and from Conway (west end of Crooked Lake) to the navigation lock at Cheboygan; in Pickerel channel from Pickerel Lake to Crooked Lake. It also provides for suitable jetties at the head of the Indian River. The addition of a lock and weir was approved by the Chief of Engineers in 1964 to correct a design deficiency. The project services primarily recreational navigation interests.