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Phase One Mapping
Coastal Flood Hazards and the National Flood Insurance Program
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60-year EHA 60-year erosion hazard AAER accretion aerial photographs analysis annual erosion rate average annual erosion Baldwin County base map beach nourishment bluff Brazoria Counties Brunswick County calculated cliff coast coastal erosion Coastal Research Coastal Zone coastline conﬁdence intervals construction CROWELL Dare County deﬁned dune engineering eroding erosion hazard areas erosion reference feature error feet FEMA ﬁeld Figure ﬁrst ﬂood elevations ﬂood hazard Flood Insurance ﬂood zone boundaries ﬂuctuations ft/yr Galveston Geological historical shoreline change identiﬁed impact Inlet Island jetty Journal of Coastal Lake landslide landward LEATHERMAN located m/yr mapping erosion hazard National Flood Insurance NFIP Ocean Ocean County orthophotos percent proﬁle reﬂect retreat Royal Palm Beach sand Santa Cruz Santa Cruz County SCRF SCRF/ERF seawall seaward sediment shoreline change rates shoreline movement shoreline position signiﬁcant storm structures study area T-Sheets tion transects trend U.S. ARMY vegetation line Virginia Beach wave