“One way or another, physics and Mother Nature are going to dictate outcomes if we don’t come up with some solutions,” Entsminger said. “I would like every water user on the Colorado River to recognize that the 21st century has substantially less water than the 20th century. And all of the institutions we built in the 20th century need to be adjusted — in months, not years — in order to face the reality of less water for every user, in every sector, in every state.”