A State resource of interest … The Geological Survey of Alabama (GSA) with support from the Federal Geographic Data Committee (FGDC) has developed and maintains a National Spatial Data Infrastructure (NSDI) Isite Node of the National Geospatial Data Clearinghouse that houses metadata and geospatial data sets archived by the GSA and State Oil and Gas Board. See also http://www.alabama.gov/portal/index.jsp and Virtual Alabama from Alabama DHS – for more State GIS data resources see this huge directory!