The Colorado River and its tributaries, including the Eagle River shown here, are vital resources that support agriculture, industry, cities, recreation, and the environment on the West Slope and the East Slope of the state of Colorado, as well as in eighteen downstream states and Mexico. Unlimited demands on limited water supplies can result in conflict—but can also lead to collaborative agreements. With population growth and climate change projected to create a widening gap between water supply and demand, compromise between competing parties becomes increasingly important.