Karst Aquifers: Edwards Balcones Fault Zone Aquifer Science Center Objects
The Edwards aquifer is the most transmissive of all the aquifers in Texas and Oklahoma, with large discharges from springs and from flowing and pumped wells. This aquifer demonstrates karst features such as springs and in-stream sinkholes, as well as endangered species.
The Edwards aquifer is the most transmissive of all the aquifers in Texas and Oklahoma. Large discharges from springs and from flowing and pumped wells attest to the highly permeable nature of the aquifer. The area underlain by the Edwards aquifer is a combination of agricultural and ranch land and areas of dense population, including the cities of Austin in Travis County and San Antonio in Bexar County. It has been designated a sole source aquifer by the U.S. Environmental Protection Agency and is the primary source of water for San Antonio, America s eighth largest city. The aquifer is separated into three parts by a groundwater
Karst Aquifers: Upper Floridan and Biscayne Aquifers Science Center Objects
Covering approximately 100,000 square miles of the southeastern United States, the Floridan aquifer system (FAS) is one of the most productive aquifers in the world. The FAS is the primary source of drinking water for almost 10 million people, with nearly 50 percent of all water withdrawals being used for industrial purposes and agricultural irrigation.
The Floridan aquifer system (FAS) is a principal aquifer of the United States and is one of the most productive aquifers in the world. It covers approximately 100,000 square miles of the southeastern United States including all of Florida and parts of Georgia, Alabama, Mississippi, and South Carolina; however, the FAS in Mississippi is not used due to its high salinity and depth. Topography within the study area is relatively flat; altitudes range from sea level along the Atlantic Ocean and Gulf of Mexico coastlines to approximately 500 feet in