LyrArc Article Gist
The effects of drought on the Colorado river and the dams in the arid west of the US which support 40 million people. This is also part of the fastest growing region in the US. The seven states along the river must negotiate major cuts in water use by mid-August or the federal government has to step in an make the cuts, says this NYT report. Years of overuse of water and climate change have led to this situation. 

Lake Mead the US's largest water reservoir is two thirds empty. It is fed by the Colorado river. The upstream states or Upper basin states are Colorado, Wyoming, New Mexico, Utah. The downstream states or Lower Basin states are Nevada, California, and Arizona. Downstream and upstream states have to figure out how the water cuts will be made.

Agriculture use makes up 70-80% of the water use. Then there are the sprawling cities such as Los Angeles and Denver and Salt Lake City. Affected are the Imperial Irrigation District in Southern California, a major agricultural area.

Las Vegas has come up with solutions for its 1.6 miillion metro area population by conserving water and staying under its 1.8% of the river allocation even as the population grows. Converting lawns and turf to desert and growing only arid zone vegetation to conserve water is being applied. This is a reality check for climate change and a reversal from the earlier effort in the 1930's to impose brute will on the landscape to build huge sprawling cities and agriculture zones. Now all that has to go into adapting to the landscape and fitting into it, limiting the use of water, recycling it, and conserving water in every way possible. It means adapting in every way, not acting in crisis solution mode but shifting to a whole new way of adapting to the environment that should have been there in the first place with some respect for Nature.