We now have added "Informational Posts" which are tidbits of information that may come in handy at some point.

Sinkholes

Sources and more information

 • Sinkholes, USGS Fact Sheet 2007-3060
 • Land Subsidence in the United States, U.S. Geological Survey Circular 1182
 • Land Subsidence in the United States, USGS Fact Sheet-165-00
 • Carbonate-rock aquifers, Aquifer Basics

See HERE

No comments: