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These 100-year floodplain boundaries are intended to provide information about future inundation extents throughout the Chehalis River basin based on high-end climate change projections. These data are not officially endorsed by Federal or Washington State agencies, and are intended for planning use only.<\/SPAN><\/P>

This shapefile contains 100-year floodplain boundaries generated from a combination of hydraulic model results and topographic data geoprocessing. The boundaries were derived using the University of Washington Climate Impact Group's estimate of the high range of anticipated change to rainfall in 2080 - a 50% increase in precipitation - using downscaled climate model data for the Chehalis Basin region.<\/SPAN><\/P>

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