With its headwaters in the Appalachian Mountains and its mouth at the Ohio River in Kentucky, the Tennessee River has been deepened, widened, and tamed in the last one hundred years, making it one of the most productive and useful waterways in the United States. Before dams tamed it, however, the river tumbled through mountains and over rapids. Today, the river has been transformed into a wide waterway that produces inexpensive electricity. Book jacket.