February 16, 2006

More on Hurricane Katrina Surge Inundation and Advisory Base Flood Elevation Maps

Katrina Recovery Maps update - The Hurricane Katrina Surge Inundation and Advisory Base Flood Elevation Maps show a variety of information concerning the hurricane’s impact – information that was developed through numerous post-storm surveys and data analyses. The Katrina Recovery Maps also show Advisory Base Flood Elevations (ABFEs), which are the best 1%-annual-chance (100-year) coastal flood elevations currently available to guide redevelopment along the Louisiana Gulf Coast. The base map for the Katrina Recovery Maps in Mississippi is pre-storm, digital orthophotography that was provided by U.S. Department of Agriculture’s National Agriculture Imagery Program
See the Louisiana Katrina Flood Recovery - http://www.fema.gov/hazards/floods/recoverydata/katrina_la_index.shtm
Maps showing the extent and magnitude of Hurricane Katrina’s surge, as well as information on advisory flood data, were created for the areas of Harrison, Hancock, and Jackson Counties in Mississippi that were most severely impacted by coastal flooding. Several data layers from the Katrina Recovery Maps are available as GIS shapefiles for download including:
Preliminary High Water Marks
Surge Inundation Limits
Surge Elevation Contours
Advisory Base Flood Elevation (ABFE) Contours
Advisory Base Flood Elevation (ABFE) Breaklines
In recent FEMA Flood Mapping updates, a delay was announced on the release of updated data for Vermillion and Iberia counties... from FEMA, Wayne Rickard, mitigation section chief for FEMA, said that the data for Vermilion and Iberia is still being plotted onto maps and that those maps, along with St. Mary Parish, are expected to be ready around the second week of March. Rickard said that while the advisory maps are pending, advisory base flood elevation guidance was released to these parishes December 1st and it is valid. These documents address eleven parishes and are available online at: http://www.fema.gov/hazards/floods/recoverydata/katrina_la_resources.shtm#guidance

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