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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.

Waterfall in Mammoth Cave Nat. Park Waterfall in Mammoth Cave Nat. Park. Recent rainfall has activated a large waterfall in the so-called Mammoth Dome, cascading water down on the path used by visistors through the cave. (Photo by Dan Doctor) Read more about Paleozoic karst aquifers of the Midwest...
Turner Falls Turner Falls. The largest waterfall in Oklahoma. Springs discharging from the Arbuckle-Simpson aquifer into Honey Creek are the source of water to Turner Falls. (Photo by Noel Osborn, Ok. Water Resources Board) Read more about the Arbuckle-Simpson aquifer...
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...
Karst conduit in a borehole, Cumberland County, PA Karst conduit in a borehole, Cumberland County, PA. A still-frame from a video taken from a camera lowered into a borehole in karst terrane. A conduit appears in this photo as a distinctive void space, which likely transmits large volumes of water through the aquifer rapidly. (Photo by Randy Conger) Read more about karst aquifers of the Valley and Ridge, Piedmont, and Blue Ridge province...
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...

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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URL: http://water.usgs.gov/ogw/karst/index
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Page Last Modified: Monday, 30-Jan-2012 16:39:46 EST