Owen, David  
  
  
    The Colorado River is a crucial resource for a surprisingly large part of the United States
 and every gallon that flows down it is owned or claimed by someone. David Owen traces all that water from the Colorado's headwaters to its parched terminus
 once a verdant wetland but now a million-acre desert. He takes readers on an adventure downriver
 along a labyrinth of waterways
 reservoirs
 power plants
 farms
 fracking sites
 ghost towns
 and RV parks
 to the spot near the U.S.Mexico border where the river runs dry. Water problems in the western United States can seem tantalizingly easy to solve: just turn off the fountains at the Bellagio
 stop selling hay to China
 ban golf
 cut down the almond trees
 and kill all the lawyers. But a closer look reveals a vast man-made ecosystem that is far more complex and more interesting than the headlines let on.