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Upper Colorado River near Moab, Utah

2009 (approx.)

Detailed Description

The Colorado River near Moab, Utah. The entire Colorado River Basin currently supports 50 million people, and that amount is expected to increase by 23 million between 2000 and 2030. A new USGS study shows more than half of the streamflow in the Upper Colorado River Basin originates as groundwater. Photo by M. Miller.


Public Domain.