THE COLORADO RIVER BASIN: AN ARID REGION WITH A RAPIDLY GROWING HUMAN POPULATION
FIGURE 6.11 The Colorado River carving the lands of western North America over the course of millions of years has produced some of the most spectacular landscapes on Earth, the best known of which is the Grand Canyon. Spectacular landscapes and a pleasant climate have attracted a large and growing human population, which is on a collision course with water shortages.
(NPS Photo)