The U.S. Geolgical Survey has a National Map Viewer that is a very useful tool to find information ranging from the distribution of Africanized honey bees in the United States, Puerto Rico, and the U.S. Virgin Islands, by county to the Texas Artificial Reef Act where this map shows the representation of the spatial area where artificial reefs have been implemented in Texas and everything else in between. This is an excellent complement to Google Maps.
http://nmviewogc.cr.usgs.gov/viewer.htm
http://nmviewogc.cr.usgs.gov/viewer.htm
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