Abstract
 ArcGIS Tool for BFE Placement after Vertical Datum Conversion Track: Database Design, Automation, and Management Author(s): Richard Stuhan, Andrew MacLeod Base Flood Elevation (BFE) contours are drawn on Flood Insurance Rate Maps (FIRMs) to represent the 100-year flood water surface elevation. The FEMA Map Modernization Program (MMP) includes the creation of Digital FIRMs (DFIRMs). One goal of the MMP is to convert all flood maps from NGVD 29 to NAVD 88. BFEs are placed as whole-foot contour lines to represent the Flood Profile. Typically, the datum conversion value is not a whole number, which necessitates a revision of BFE contour locations. A semiautomated toolset was developed with ArcGIS ModelBuilder to assist in locating the datum converted BFE locations. This toolset uses existing streamline and cross section data as inputs and produces a point shapefile. This point shapefile is the location of the datum converted whole-foot BFE locations. Richard Stuhan URS Corporation Environmental Planning 7720 N. 16th Suite 100 Phoenix 85020 US Phone: 602 861 7462 E-mail: richard_stuhan@urscorp.com Andrew MacLeod URS Corporation Floodplain Management Group 333 E. Wetmore, Suite 611 Tucson , AZ 85705 US Phone: (520) 887-1800 E-mail: andrew_macleod@urscorp.com |
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