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Karst and the USGS

Welcome to the USGS Karst Website. This website presents information on USGS research on karst aquifers, which are a vital groundwater resource in the United States. Here you can learn about past and current USGS karst research, with information on ongoing studies, publications, and key contacts for major karst areas. Click on an aquifer on the map below, or select one from a list of aquifers.

Sinkholes from subsidence event, Florida, February 1998
Sinkholes from subsidence event, Florida, February 1998. Over 700 sinkholes formed over a 20-acre area in response to well drilling. A well had been drilled about 20 feet into a cavity, when air-lift well-development methods began being used. Immediately after, small sinkholes started appearing in the surrounding area. Subsidence continued for several hours, with sinkholes closest to the well expanding to become the largest in the area. (Photo by Ann Tihansky) Read more about the Upper Floridan and Biscayne aquifers...
Cave along Cedar Creek, Virginia Cave along Cedar Creek, Virginia. USGS Hydrologist Bob Hirsch experiences karst terrane first hand while kayaking on Cedar Creek. He is paddling out of a cave along Cedar Creek, about 20 miles south of Winchester. Cedar Creek is a tributary of the North Fork of the Shenandoah River. (Photo by Mary Cirincione) Read more about karst aquifers of the Valley and Ridge, Piedmont, and Blue Ridge province...
Barton Spring Pool, Austin, Texas Barton Spring Pool, Austin, Texas. A public swimming pool visited by over 300,000 people annually. The pool is filled by discharge from Main Barton Spring, and is a centerpiece of political and environmental dialog. (Photo courtesy of the City of Austin) Read more about the Edwards Balcones Fault Zone aquifer...
Streamflow tracer test on a tributary to Hopewell Run near Leetown, WV Streamflow tracer test on a tributary to Hopewell Run near Leetown, WV. U.S. Environmental Protection Agency scientist Malcolm Field conducts this test. It was conducted to assess potential leakage of stream water to the karst aquifer in the northern Shenandoah Valley of West Virginia. (Photo by Carol Boughton) Read more about karst aquifers of the Valley and Ridge, Piedmont, and Blue Ridge province...
A "blue-hole" spring, Orangeville Rise, Indiana A "blue-hole" spring, Orangeville Rise, Indiana. Sixty feet in diameter. (Photo by Chuck Taylor) Read more about Paleozoic karst aquifers of the Midwest...

This website allows you to browse for karst reports and articles authored by USGS researchers, and find links for other karst resources. There is also an overview of karst and its properties.

This website is maintained by members of the USGS Karst Interest Group, whose (KIG), who investigate karst across the United States.

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Page Last Modified: Monday, 30-Jan-2012 16:39:46 EST