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Map preliminary reach boundaries and document rationale

In some cases, the classification provides appropriate reach breaks. Generally, however, further splitting or lumping is necessary. Divide the shoreline jurisdiction into management reaches based on localized processes and land use. Document the rationale, this will aid in preparing the summary of ecological functions. These reaches can be considered preliminary environment designation boundaries.

If existing reports or analyses identify reaches, adopt and/or modify as appropriate for shoreline management. Overlay waterbodies, land use, and aerial photos on a topographic map or digital elevation model. Consider the following in determining location of reach.

• Similar land use, zoning and ownership classes.

• City or Urban Growth Area boundary.

• For marine shorelines, changes in drift cell boundaries and landform, sediment and freshwater inputs, fetch and wind orientation.

• For rivers, gradient/confinement changes, confluence of streams and tributary input points, land use, zoning, ownership.

• For lakes, changes in geomorphic units (changes in slope, surficial geology, fetch, shoreline geometry, and nearshore substrate).
   

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