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The OMZ is not a substitute for the channel migration zone (CMZ); rather, because no statewide dataset for CMZs currently exists, we created OMZs using existing data to enable the mapping of RMZs, knowing that in many instances the OMZ will be narrower than the CMZ. The dataset is subject to change as better base data becomes available. Caution: These data are a modeled representation of RMZs developed using GIS data and remote sensing datasets. As such they are estimates of RMZ locations and not surveys of known RMZ locations. This regional dataset was developed for analytical purposes and can be used to estimate the total area, distribution, or patterns of RMZs at a landscape scale (for example, county or watershed). This dataset is not intended to support site-scale land use decisions \u2013 other than for use as a flagging tool to determine where site surveys are necessary. True delineation of RMZ boundaries for any sitescale land use decisions require a field survey to verify a RMZ\u2019s presence, boundary, and quality. 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