This section allows users easy access to a wide range of high-quality digital data and GIS products covering the study area. Examples of GIS products include the following map layers: hydrography, roads, vegetation cover, forests, timber, and soils. The U.S. Geological Survey (USGS) provides four different digital cartographic products: Digital Raster Graphic (DRG), Digital Line Graph (DLG), Digital Elevation Model (DEM), and Digital Orthophoto Quadrangle (DOQ).
You will need GIS software to view these data. The Dem3d and Dlgv32 viewers are free downloadable software provided by the USGS for viewing digital data. The viewers are compressed for faster downloading and require the shareware WinZip to uncompress it. To download these software tools, use the links below. These two software tools run on Windows platform.
For more information on the capabilities of these two software tools, please visit the following sites:
Data Available for Download
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