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Earth Surface Processes Terrain Modeling and Geographic Analysis Project
Projects: Hurricane Felix Response Products

Hurricane Felix Response Products

USGS Situation Map with 2005 Landscan Data

Flood_Data_Maps.pdf - An Adobe Acrobat (PDF) file of the area affected by Hurricane Felix as of September 5th, 2007. File Size (14.2 MB).

To view the maps on this webpage, you will need Adobe Reader to view this file. Download a copy of the latest version of Adobe Reader for free.

USGS Situation Map: Flood Inundation Data for Central American Municipalities

Flood_Data.pdf - An Adobe Acrobat (PDF) file of the area affected by Hurricane Felix as of September 4th, 2007. File Size (12.7 MB).

1. LIDAR Derived 50-Year Flood-Inundation Maps and Orthophotography

Pre-and-post Hurricane Mitch remote sensing data was acquired by U.S. Geological Survey scientists involved with related projects in the four Central American countries of Guatemala, El Salvador, Honduras, and Nicaragua. To the extent possible, the acquired data are cloud-free and provide an unobstructed view of the land surface. The aerial photography has been acquired so that stereo coverage, which produces a three-dimensional model of the terrain, is available for specific study sites in the within each of the four countries. This imagery serves as a basis for mapping landslides and debris flows; for determining impacts to coral reefs, mangrove swamps, coastal vegetation and shrimp farms; and for mapping municipalities at risk. Also, high-resolution, LIDAR elevation data was procured to aid in flood inundation studies for portions of fifteen municipalities in Honduras.

To learn more the USGS projects associated with Hurricane Mitch, visit the USGS Hurricane Mitch Program website.

2. DEM Derived Alluvial Flood Plain Maps and Orthoimagery

For those municipalities that LIDAR was not collected for after Hurricane Mitch, flood plain maps were derived from 30m resolution digital elevation models (DEMs). These alluvial floodplain deposits were primarily derived by applying a compound topographic index (CTI) to a 30-meter DEM. The CTI was reclassified to display only alluvial plain and recent alluvial deposits and overlain on top of the orthophotography of the area. The resultant maps provide a basis for land-use planning and for hazard mitigation near or within the floodplain for areas that do not have available LIDAR floodplain models.

3. Landslide Hazard Maps

This page includes products related to landslide hazards and debris flow susceptibility in Central America as a result of severe rainfall.

LIDAR Derived 50-Year Flood-Inundation Maps and Orthophotography

Landslide Hazard Maps

DEM Derived Alluvial Flood Plain Maps and Orthoimagery

Disaster Map of Central America, South America and the Caribbean

 

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