Borough of Perkasie Stream Restoration

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.  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.  A customized native seeding mix and shrub planting plan were developed to provide both excellent erosion control and improved aesthetics.

F. X. Browne, Inc. used HEC-RAS modeling to determine shear stress and velocities for the design discharge.

Please click on an image to enlarge it.

Before and After pictures of the Borough of Perkasie Stream Restoration

Project Construction - April 2002

Cofferdam Installation Boulder Toe Installation Completed Boulder Toe Installation Temporary Stream Crossing
Boulder Toe Foundation for Vegetated Geogrid Installation Live Material Delivery Vegetated Geogrid Installation - First Layer of Live Material Vegetated Geogrid Installation
 - Branch Layering
Fine Grading Vegetated Geogrid Installation Vegetated Geogrid Installation - Adding Soil Fill

Final Installation

Vegetated Geogrid Completed Installation Boulder Toe and Graded Bank Vegetated Geogrid Completed Installation Vegetated Geogird Completed Installation

Project Update 5/06/02

Willow Shoots from a Vegetated Geogrid

Project Update 6/04/02

Vegetated Geogrid Island Surface Vegetated Geogrid

Project Update 9/02/02
 

Vegetated Geogrid Growth Vegetated Geogrid Growth

Project Update 10/03/02

Vegetated Geogrid Boulder Toe and Graded Bank Boulder Toe and Graded Bank

Project Update - June 2003

Vegetated Geogrid Growth Vegetation Growth above Boulder Toe Wildflowers Blooming on Graded Bank

 

Project Update - July 2004

       
       
       
       
       

For more information on the Borough of Perkasie Stream Restoration Project please call 215-362-3878 or email info@fxbrowne.com.  Please visit the services section of our website for information.