LINKS
Popular Web Sites for Data Compatible with Autodesk  
 
CivilTraining.com
CivilTraining.com's mission is to promote knowledge and best practices in the industries served and to increase profitability by helping professionals become more productive through technology.
 
 
Wetland Studies and Solutions Inc
WSSI is the leading natural and cultural resources consultant in Northern Virginia. Our wetland scientists, engineers, regulatory /compliance / survey / GIS specialists, and archeologists assist developers and public works agencies with the permitting process and create innovative solutions to water quality issues affecting the Chesapeake Bay region
 
 
National Data Sources:
 
  U.S. Environmental Protection Agency Search Where You Live
 
  USGS Geographic Data Download
 
  The National Map Seamless Server - USGS   
 
  US Government Search for State EPA
 
 
 
 
 
NRCS Soils Data – 
This site hosts a variety of geospatial data, such as:

  USGS DRG (raster - scanned USGS quad maps)
  DEM Data (from the National Elevation Data Set - various resolutions)
  Ortho Imagery (the NAIP is usually most recent)
  Soils Data (the SSURGO includes SHP files of the Soil Survey maps) 
   Precipitation Data (varies greatly by location – the NOAA HDSC site listed below has better data)

Instructions: Find the Get Data link a couple of lines down from the top. You can then graphically select the area or select an entire county or state. Once you have selected the area, select the data types and the delivery format (FTP is best). You will need to sign up and supply some information, but it is free. Once the site has packaged your order, they will send you an email with the FTP link for download. Note: Don’t expect instant service at all times. Data can take as long as several hours to prepare during peak times.
 
 
NOAA HDSC –
This site is the primary host for precipitation data for the entire U.S.A. The maps hosted here include the precipitation frequencies and intensities that can be used to develop IDF curves and other critical data needed for the Hydraflow extensions to calculate hydrographs. Very little georeferenced data is available here, but the raster images can be inserted and ortho-rectified to your location (not a real big deal, since the data is fairly low precision). There are also links to some SHP files for selected areas
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