Feasibility of Nearshore Placement Near the Swinomish Navigation Channel; Puget Sound, Washington

Abstract

This Regional Sediment Management Technical Note (RSM-TN) discusses the analysis performed to investigate the feasibility of dredged material beneficial use sites (BUS) located in the nearshore region in Skagit Bay, Puget Sound, Washington. The Swinomish Channel, located adjacent to the North Fork Skagit River, presently has only two deep water placement sites available to accept U.S. Army Corps of Engineers (USACE) Operations and Maintenance (O and M) related dredged material. As part of the RSM initiative, the investigation sought to identify a low-cost, technically feasible, and environmentally acceptable alternative for future dredging and placement operations over the project life cycle. In this study, a three-dimensional (3-D) hydrodynamic circulation model and a Lagrangian-based Particle Tracking Model (PTM) were employed to investigate the fate and transport of dredged material placed in the vicinity of the project site. The modeling serves as a basis to support new National Environmental Policy Act documentation for the USACE O and M dredging project over the next 13 years.

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Document Details

Document Type
Technical Report
Publication Date
Aug 01, 2019
Accession Number
AD1079678

Entities

People

  • David R. Michalsen
  • Scott H. Brown

Tags

Communities of Interest

  • Ground and Sea Platforms

DTIC Thesaurus Topics

  • Army Corps Of Engineers
  • Coordinate Systems
  • Deep Water
  • Engineering
  • Engineers
  • Fish
  • Grain Size
  • Habitats
  • Materials
  • Particles
  • Physical Properties
  • Puget Sound
  • Sedimentation
  • Simulations
  • Three Dimensional
  • Turbulent Diffusion
  • Water

Readers

  • Coastal Oceanography
  • Coastal and Marine Engineering/Sediment Transport/Hydraulic Engineering