Great Lakes Journey is a follow-up to William Ashworth's earlier book The Late, Great Lakes, published in 1986. Fifteen years after his first trip, Ashworth journeys to many of the same places and talks to many of the same people to examine the changes that have taken place along the Great Lakes since the 1980s. It is a poetic account of his 6000-mile trip, mixed with explanations of the scientific and poilitical realities behind the observed changes, reminiscences of his 1983 trip, and conversations with local residents - some of them scientists, and other simply people who care.