“The Colorado River, which supplies drinking water to seven states in the US and two in Mexico, is the lifeblood of the American West and beyond. It’s drying up at an alarming rate, threatening cities, industries, agriculture, and energy sources. As it shrinks, rich ecosystems across its 1,450 miles are also disappearing.”
https://www.vox.com/the-highlight/23682697/colorado-river-drought-100-year-old-mistake-thats-reshaping-the-american-west