In the 1960s, Arizona was facing a crisis. Its aquifers were depleting and its ground was sinking. That issue prompted a major infrastructure project that would forever change what was possible in the state, a 336 mile system of canals that take a big part of the state's Colorado River water allocation and diverts it to Phoenix and Tucson, as well as farmland in Central Arizona. This week, we look at how the Central Arizona Project came to be, and what it means to the state.