November 3rd, 2010
Most River Flows across the U.S. are Altered by Land and Water Management, Leading to Ecological Degradation

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The amount of water flowing in streams and rivers has been significantly altered in nearly 90 percent of waters that were assessed in a new nationwide USGS study.  Flow alterations are a primary contributor to degraded river ecosystems and loss of native species. This study was conducted by the USGS National Water-Quality Assessment Program, which has assessed the physical, chemical and biological characteristics of streams and rivers across the nation since 1991. Learn More