20211229 17571500 1.0 TRUE Channel Migration Areas This layer represents the Channel Migration Zone along the Sandy River based on analysis designed by Rapp and Abbe, 2003. The Channel Migration Zone (CMZ) represents the cumulative product of historical analysis and morphological interpretations characterized by the following equation: CMZ = HMZ + AHZ + EHA - DMA. John T. English, Daniel E. Coe, and Robert D. Chappell