Report lists Grand Canyon's Colorado River as most imperiled

April 7, 2015 9:13 PM

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"The Grand Canyon is facing the biggest threats in a generation," said Bob Irvin, president of American Rivers.

Every year since 1984, American Rivers puts out its "America's Most Endangered Rivers" report. This year's report lists threats like harmful human development, groundwater depletion and uranium mines as just a few of the reasons why one of North America's most iconic stretches of river tops the 2015...

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