NATURE-BASED DYNAMIC REVETMENT CONSTRUCTION AT NORTH COVE, WASHINGTON, USA

David Cottrell,Gavin Glore

doi:10.9753/icce.v36v.management.38

Abstract

A dynamic revetment was constructed at North Cove, Washington, USA in December 2018 along a historically eroding 2-km shoreline reach of coastal barrier at the northern entrance to Willapa Bay. The revetment is composed of poorly sorted angular quarry rock ranging in size from pea gravel to small boulders as well as large wood debris and structures, a dune ridge, and native vegetation integrated with the revetment. The design, aim, and maintenance of the dynamic revetment is to simulate the functions of naturally forming cobble berms along composite beaches in the U.S. Pacific Northwest. The dynamic revetment continues to be adaptively constructed over time, enabling the testing of innovative design approaches and concepts that are rarely possible to do at full-scale in the field. The project provides a unique opportunity to explore nature-based engineering principles and design features.Recorded Presentation from the vICCE (YouTube Link): https://youtu.be/5w18tEjEePg

Highlights

A dynamic revetment was constructed at North Cove, Washington, USA in December 2018 along a historically eroding 2-km shoreline reach of coastal barrier at the northern entrance to Willapa Bay (Figure 1a,b)
The revetment is composed of poorly sorted angular quarry rock ranging in size from pea gravel to small boulders as well as large wood debris and structures, a dune ridge, and native vegetation integrated with the revetment
The dynamic revetment continues to be adaptively constructed over time, enabling the testing of innovative design approaches and concepts that are rarely possible to do at full-scale in the field

Summary

Introduction

Washington State Department of Ecology, gkam461@ecy.wa.gov David Cottrell, Pacific County Drainage District #1, cranberrydavid@yahoo.com Gavin Glore, Pacific Conservation District, sw.area.engineer@gmail.com INTRODUCTION A dynamic revetment was constructed at North Cove, Washington, USA in December 2018 along a historically eroding 2-km shoreline reach of coastal barrier at the northern entrance to Willapa Bay (Figure 1a,b).

Results

Conclusion