Some of these datasets require technical expertise to interpret. Finally, this web site was to receive a revision last summer, that apparently did not occur. Geology Education and Outreach An assortment of links to the USGS' general interest publications. Not all publications are available online. This site features data sets, maps, diagrams, and links.
Images come with very readable explanations.
This site is a gateway to an incredible variety authoritative maps including an online version of the National Atlas of the United States. Back to the top of the page. Economic Geology USGS Water Resources of the United States Articles, technical publications, maps, and updates about water conditions around the United States are all included on this site. Water conditions cover droughts, floods, and acid rain. This site loads slowly.