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A Methodology for Delineating Planning-Level Channel Migration Zones

Publication number Date Published Date Revised
14-06-025July 2014August 2014
VIEW NOW A Methodology for Delineating Planning-Level Channel Migration Zones (Number of pages: 83) (Publication Size: 8120KB)

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Note: Planning-Level CMZ -Reach Datasheet

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Author(s) Patricia L Olson and Nicholas T. Legg (Ecology); Tim B Abbe and Mary Ann Reinhart (Natural Systems Design), and Judith K. Radloff (GeoEngineers, Inc)
Description The Washington State administrative codes that implement the Shoreline Management Act (SMA) require communities to identify the general location of channel migration zones (CMZs), and regulate development within these areas on shoreline streams. The SMA and its administrative codes provide no guidance on planning-level CMZ delineation methods. The Washington Department of Ecology developed a planning-level CMZ delineation (pCMZ) method to support local communities’ updates and implementation of the SMA requirements. This document describes the pCMZ approach in context of Washington State regulations
The mission of the Department of Ecology is to protect, preserve, and enhance Washington’s environment. To help us meet that goal, please consider the environment before you print or request a copy.

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Keywords Shoreline Master Programs, erosion hazards, flood erosion hazards, flood hazards, planning level Channel Migration Zone methods, Puget Sound streams or rivers, channel migration zones, Channel Migration
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