Our tenuous water infrastructure

Well I'm sure the last thing anyone wants to read is stuff that won't be on the midterm, but this piece directly ties into our class' discussions about sustainability, footprint, etc.

Lake Mead Could Dry Up by 2021

Lake Mead, a key source of water for millions of people in the southwestern United States, could go dry by 2021, a new study finds.

The study concludes that natural forces such as evaporation, changes wrought by global warming and the increasing demand from the booming Southwest population are creating a deficit from this part of the Colorado River system.

Along with Lake Powell, which is on the border between Arizona and Utah, Lake Mead supplies roughly 8 million people in the cities of Las Vegas, Los Angeles, and San Diego, among others, with critical water supplies.

The system is currently only at half capacity thanks to a recent string of dry years, researchers say.

The study’s findings indicated that there is a 10 percent chance that Lake Mead could be dry by 2014 and a 50 percent chance that reservoir levels will drop too low to allow hydroelectric power generation by 2017. There is a 50 percent chance the lake will go dry by 2021, the study says.

Researchers say that even if water agencies follow their current drought contingency plans, those measures might not be enough to counter natural forces, especially if the region enters a period of sustained drought or if human-induced climate changes occur as currently predicted.

http://www.livescience.com/environment/080212-dry-lake-mead.html