Bioengineering to Stabilize Streambank Dredge Spoil

摘要

Bioengineering techniques were used to stabilize dredge spoil placed to repair a streambank eroded by surface water from a logging road. The site was a 300-foot wide, 50-foot high 2:1 bank on the Allegheny River in Rimer, northern Armstrong County, Pennsylvania. The Glacier Sand and Gravel Company performed the dredging operation and the Armstrong County Soil Conservation District recruited volunteers from a variety of sources to establish the planting. Plant materials were supplied by the USDA Natural Resources Conservation Service plant materials centers in Big Flats, New York; Quicksand, Kentucky; and Cape May, New Jersey. Wattles of 'Streamco' purpleosier willow and 'Bankers' dwarf willow were planted at the bottom of the slope in three rows 2 fee t apart.