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USGS Study: Water-quality trends in streams and rivers https://t.co/Jg41xDdlrD
USGS Study: Water-quality trends in streams and rivers https://t.co/Jg41xDdlrD
RT @AlbertEttinger: water quality trends according to USGS are not great. https://t.co/3jqceQYAH3
water quality trends according to USGS are not great. https://t.co/3jqceQYAH3
Paper from @USGS study: 'Water-quality trends in U.S. rivers, 2002 to 2012: Relations to levels of concern' https://t.co/WA7rCTW7Q3