Rivers Recover Rapidly Once Dams Are Gone, Study Finds

Oregon Public Broadcasting, April 30, 2015, by Cassandra Profita

"A new study sums up what scientists now know about the environmental effects of removing dams from rivers.

It concludes that rivers and fish respond quickly after a dam is removed, and the results are mostly positive. ...

Rivers often disperse the extra sediment from behind a dam within weeks or months of dam removal, the study finds. Migratory fish move swiftly to recolonize newly accessible habitat – at times swimming past the former dam site within a matter of days.

The research, published Thursday in the journal Science, compiles the findings of more than a hundred studies on individual dam removals."

http://www.opb.org/news/article/rivers-recovery-rapidly-once-dams-are-gone-study-finds/

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