Stream Restoration

East Branch Perkiomen Creek Streambank Stabilization Project
Borough of Perkasie, Bucks County, Pennsylvania

F. X. Browne, Inc. designed a bioengineering stabilization project to address severe erosion problems along 700 linear feet of an island within the East Branch Perkiomen Creek, Borough of Perkasie, PA.  The island is a valuable historical, natural, and cultural resource for the Borough of Perkasie.  The design consisted of grading one side of the island, while extending the other side of the island using a vegetated geogrid technique.  Using this approach, the amount of usable space on the island was maintained, and the majority of large trees on the island were preserved.  F. X. Browne used HEC-RAS modeling to determine shear stress and velocities for the design discharge.  A customized native seeding mix and shrub planting plan were developed to provide both excellent erosion control and improved aesthetics.


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