Built in 1938, Parker Dam
is the southernmost of six dams across the Colorado River, and its main function is to supply water to the cities of southern California and central Arizona, transported there by means of aqueducts across the desert. Lake Havasu
extends for 38 miles upstream, while in the other direction, the Colorado River flows in a natural state for the remainder of its journey south, lined by low cliffs, desert hills or marshy flats. Apart from two national wildlife refuges (Cibola and Imperial), there are no locations of great interest between Parker Dam and Yuma.