Maps Show U.S. Rivers With High Natural Values

The Pew Charitable Trusts engaged NatureServe and Michigan State University to build national databases of watershed conditions and barriers that alter the natural flow of rivers, streams, and other freshwater bodies.

The first database includes assessments and analyses of biodiversity, ecological conditions, and degrees of protection for freshwater systems within the continental U.S. The second database provides a wealth of information that can be used to assess the potential benefits and drawbacks of removing obsolete or dangerous dams across the country. Policymakers can use these maps to help determine how best to leverage resources to safeguard rivers.

LINK (via PEW )

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