Abstract: Workshop #3 (BACK)

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A Practical Framework for Implementing Channel Migration Zones into Our Projects

Lucas Babbitt, PE, CFM

*Students are required to bring a laptop with GIS

A channel migration zone is the area along a river within which the channel can be reasonably predicted to migrate over time because of natural and normally occurring hydrological and related processes when considered with the characteristics of the river and its surroundings.  Failing to recognize the channel migration process often leads to damage to, or loss of, structures and threats to life and safety. (Washington State Dept. of Ecology).

There are several protocols available for defining channel migration zones.  The time and data required for each method varies greatly, and some of the published methodology has a tremendous amount of error associated with it.  The purpose of this workshop is to give attendees an overview of the methodologies available to delineate channel migration zones and recommend a couple resource- and time-efficient methods that can be incorporated into riverine design projects.  The workshop will go through each of the recommended methods in detail using a variety of case studies for design and planning projects.  Data sources and GIS tools will be provided to attendees.

General Agenda

  • Channel Migration Zone definition and importance
  • Overview of available methodologies
  • Recommended methodologies that are resource- and time-efficient
    • Data requirements
    • GIS processing tools
  • Case studies
  • Interactive work session
    • Obtaining the right data
    • Processing data using GIS
    • Interpreting results
    • Design implementation