USGS National Flood Summary information from 1970-1998 April 27, 2006 by gisuser The U.S. Geological Survey has made the National Flood Summary information from 1970-1998, including maps and data, available on the World Wide Web. read more | digg story Related Posts:Introducing vMAP, a new GIS Program from HaibergTownship Canada - Explore Canadian Legal Land…Coming soon, ArcGIS mobile technology updates!