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Rio Grande in Big Bend National Park repeat photography from about 1945 and 2008 showing channel narrowing

By Southwest Biological Science Center
Repeat photography from about 1945 (top panel) and 2008 (bottom panel) showing channel narrowing over time
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Detailed Description

Repeat photography from about 1945 (top panel) and 2008 (bottom panel) showing channel narrowing over time in a portion of the Rio Grande in Big Bend National Park. 

Sources/Usage

Public Domain.