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Channel Restoration Project along Toby Creek

by Dennis N. Jermeland,
Daniel Billman,
William R. Tingle,



Document Type: Proceeding Paper

Part of: North American Water and Environment Congress & Destructive Water

Abstract:

Creek banks within Mecklenburg County, NC, are eroding, producing excessive quantities of sediment in the creek and causing bank instability. Seeking innovative approaches to these problems, Mecklenburg County Storm Water Services (SWS) teamed with HDR Engineering's Charlotte and Anchorage, AK, offices to develop prototype projects for improving channel stability and reducing bank erosion throughout the county. Three sites along Toby Creek with representative channel problems were selected to demonstrate channel restoration techniques. The three sites selected were: (1) an eroding side channel to Toby Creek that has an exposed 21-inch sanitary sewer line, (2) a straight channel reach with undercut vertical channel banks and bank slumping, and (3) an eroding bend where the scouring threatens a major sewer line. Restoration techniques were developed specifically for these types of problems and will include native vegetation, reshaping of channel banks, and construction of bank toe protection. Based on findings from these channel restoration projects, a series of standard details will be developed for use throughout the County on areas with similar problems. The sites will be monitored for two years to evaluate performance of channel restoration techniques.

Subject Headings: River bank stabilization | Channel stabilization | Rivers and streams | Erosion | Ecological restoration | Site investigation | Project management | Alaska | United States | North Carolina

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