Most River Flows Across the United States Are Altered by Land and Water Management
The First, National Assessment of Flow Alteration
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 US Geological Survey study. Flow alterations are a primary contributor to degraded river ecosystems and loss of native species.
“Findings show the pervasiveness of stream flow alteration resulting from land and water management, the significant impact of altered stream flow on aquatic organisms, and the importance of considering this factor for sustaining and restoring the health of the Nation's streams and ecosystems,” said Bill Werkheiser, USGS Associate Director for Water.
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Posted November 2010