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The Edwards aquifer is a karst aquifer system that is a primary water source for a large part of central Texas including the city of San Antonio, Texas. These vector geospatial data represent the geographic extent of the contributing zones for the Northern, Barton Springs, and San Antonio segments of the Edwards aquifer. The contributing zone is defined as the drainage area of the Edwards Plateau that contributes surface water to the Edwards aquifer recharge zone. The recharge zone is where surface water and precipitation infiltrate into the outcrop of the rocks that compose the aquifer (see Ashworth and Hopkins, 1995, and George and others, 2011). References Ashworth, J.B., and Hopkins, Janie, 1995, Aquifers of...
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This dataset is a structure-from-motion model and orthophoto of the Little River exposure (35.8199° N, 83.8961° W) in the Eastern Tennessee seismic zone, Tennessee, USA. The structure from motion model is a 3D PDF.
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The Sparta aquifer is used in 15 parishes in north-central Louisiana, primarily for public supply and industrial purposes. Of those parishes, eight (Bienville, Claiborne, Jackson, Lincoln, Ouachita, Union, Webster, and Winn) rely on the Sparta aquifer as their principal source of groundwater. In 2010, withdrawals from the Sparta aquifer in Louisiana totaled 63.11 million gallons per day (Mgal/d), a reduction of more than 11 percent from 1995, when the highest rate of withdrawals (71.32 Mgal/d) from the Sparta aquifer were documented. The Sparta aquifer provides water for a variety of purposes which include public supply (34.61 Mgal/d), industrial (25.60 Mgal/d), rural domestic (1.50 Mgal/d), and various agricultural...
    map background search result map search result map Digitized Contour from Georeferenced Plate 2012 from "Potentiometric Surface, 2012, and Water-Level Differences, 2005-2012, of the Sparta Aquifer in North-Central Louisiana" Contributing Zones of the San Antonio, Barton Springs, and Northern segments of the Edwards aquifer Structure from motion model and orthophoto of the Little River exposure in the Eastern Tennessee Seismic Zone, Tennessee, USA Structure from motion model and orthophoto of the Little River exposure in the Eastern Tennessee Seismic Zone, Tennessee, USA Digitized Contour from Georeferenced Plate 2012 from "Potentiometric Surface, 2012, and Water-Level Differences, 2005-2012, of the Sparta Aquifer in North-Central Louisiana" Contributing Zones of the San Antonio, Barton Springs, and Northern segments of the Edwards aquifer