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Excerpt from Elwha Ecosystem and Fisheries Restoration Permit Coordination Package: Re-Application Information Package Removing the dams and sediment will impact the river system during and after dam removal. Impacts to water quality and water users will result from transporting trapped sediment in the river water column. Impacts to the river location and flood stages will result from increased river bed elevation (aggradation) caused by transporting sediment in the water column. Short-term aggradation may cause higher ood stages in the period immediately following darn removal. In the longer term, the river would return to natural conditions and only minor changes to riverbed elevations would occur. Mitigation would be required to protect users of river water from short and long-term impacts. Impacts include increased suspended sediment (ss) concentrations, river meander, and aggradation. Mitigation for domestic and industrial water users would include providing new intake structures, treating water, and providing ood protection. Flood protection would also be provided for residential homes near the river. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works
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Elwha Ecosystem and Fisheries Restoration Permit Coordination Package
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