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Straight Rock Vane Induced Scour in Central Pennsylvania Lower Order, Gravel Bed Streams

Published by the American Society of Agricultural and Biological Engineers, St. Joseph, Michigan www.asabe.org

Citation:  2010 Pittsburgh, Pennsylvania, June 20 - June 23, 2010  1008584.(doi:10.13031/2013.29963)
Authors:   M D McKay, A R Jarrett, L K Brannaka
Keywords:   Stream Restoration, Rock Vanes, Scour, Fill, Bedload Transport, Sediment Transport, River Restoration, Scour Chains

The purpose of this study was to determine how a straight rock vane affects scour within three lower order gravel bed stream channels in north central Pennsylvania. Scour chains were used to measure the scour and fill associated with flow events of sufficient size as to initiate bedload transport. Networks of 18 to 26 scour chains were installed in a grid that extended across the channel and from above to below the rock vane and were used to determine the amount of aggradation and degradation occurring at these specific sites. Bulk core samples of the bed material were taken in order to determine the size of particles that were moving during these flows.

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