The Biden administration floated two ideas this week to reduce water usage from the dwindling Colorado River, which supplies 40 million people. The 1,450-mile (2,334-kilometer) river is a lifeline for seven U.S. states, dozens of Native American tribes, and two states in Mexico. It irrigates nearly 5.5 million acres (about 2.2 million hectares) of farmland in the U.S. and Mexico and generates hydroelectric power used across the West.