An American Nile, part two of the CADILLAC DESERT series, tells the story of how the Colorado became the most controlled, litigated, domesticated, regulated and over-allocated river in the history of the world. Rich with archival footage and interviews with the river's "shapers" and protectors, the broadcast chronicles how the Colorado became so dammed-up and diverted that by 1969 it no longer reached the sea except in the wettest of years.