Name: Extent of Flooding 1 Foot SLR (Above MHHW)

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Description: This layer represents inundation (flooding) depths associated with a projected 1-foot of sea level rise (SLR) over mean higher high water (MHHW). Inundation depth values from NOAA were reclassified by the UF GeoPlan Center for use within the AOI Tool Resilience Report, part of the Florida Department of Transportation's Environmental Screening Tool. Depth rasters were downloaded from National Oceanic and Atmospheric Administration (NOAA) Office for Coastal Management (OCM). Information from NOAA OCM below: These data were created as part of the NOAA Office for Coastal Management's efforts to create an online mapping viewer depicting potential sea level rise and its associated impacts on the nation's coastal areas. These data depict the potential inundation of coastal areas resulting from current Mean Higher High Water (MHHW) conditions. The process used to produce the data can be described as a modified bathtub approach that attempts to account for both local/regional tidal variability as well as hydrological connectivity. The process uses two source datasets to derive the final inundation rasters and polygons and accompanying low-lying polygons: the Digital Elevation Model (DEM) of the area and a tidal surface model that represents spatial tidal variability. The tidal model is created using the NOAA National Geodetic Survey's VDATUM datum transformation software (http://vdatum.noaa.gov) in conjunction with spatial interpolation/extrapolation methods and represents the MHHW tidal datum in orthometric values (North American Vertical Datum of 1988).The model used to produce these data does not account for erosion, subsidence, or any future changes in an area's hydrodynamics. It is simply a method to derive data in order to visualize the potential scale, not exact location, of inundation from sea level rise.The raster data represent both the horizontal extent of inundation and depth above ground, in inches. The vector data represent the horizontal extent of both hydrologically connected and unconnected inundation.

Copyright Text: National Oceanic and Atmospheric Administration (NOAA) Coastal Services Center

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