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We tend to take easy, safe access to potable water for granted until there's a shortage in access to it (like in Texas) or an overflow (as with Hurricane Irene). And in reality, there are a number of water risks that the world will face in the coming years, including deteriorating water quality, growing competition for limited access to resources, and an increase in water scarcity. The World Resource Institute's Water Risk Atlas outlines those risks--and gives a preview of what you can expect in your town or city in the coming years.

The Colorado River has a long journey. It flows from mountains, runs by cities, winds through remote, rust-colored canyons and touches seven states before entering Mexico.