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DESIGN CONSIDERATIONS FOR THE RESTORATION OF SAND BED STREAM CHANNELS AND ASSOCIATED RIPARIAN WETLANDS

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

Citation:  Paper number  701P0904,  . (doi: 10.13031/2013.17392)
Authors:   Kevin L. Tweedy
Keywords:   Headwater systems, natural channel design, mitigation, reference sites

Restoration projects that address stream and wetland functions concurrently require special design considerations that are not typically evaluated for projects that restore stream or wetland functions alone. The design should take into account the interrelated functions of the system as a whole. Stream and floodplain functions include the transport and storage of water and sediment. These functions, in turn, provide diverse aquatic and riparian habitats. This systems-based approach allows for the restoration of self-sustaining riparian ecosystems.

This paper discusses design considerations for the restoration of sand bed stream channels and associated riparian wetlands. Data are presented from two completed mitigation projects and four reference sites. Sites were located on first or second order headwater stream systems whose associated floodplain areas contain hydric soils. Mitigation sites were used for agricultural production prior to restoration of stream and wetland functions, and reference sites were forested reference wetland and stream systems that exhibited little evidence of recent disturbance.

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