The 14 year drought in southern Nevada, northern Arizona, and southern California threatens Lake Mead and the water supply to Las Vegas and other communities. The ability to have such a city in the middle of a desert is quite remarkable. It rests on the construction of Hoover Dam:

I’ve been there twice and I was impressed both times by the ability to put this all together in the 1930s. Yet, the dam is highly dependent on available water and weather patterns. Here is a look at the lower Lake Mead from the top of Hoover Dam in July 2012:

While this is partly a cautionary tale about the the limits of human consumption, it also presents an opportunity for human ingenuity. As the news report notes, “Las Vegas actually reuses 93% of its water.” Imagine if all cities in the world reached such levels. Thus, even with an extended drought, Las Vegas may continue to thrive:

The show must go on…