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Potentiometric surfaces of the intermediate aquifer system, west-central Florida, September 2000

Open-File Report 2001-114

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Abstract

The intermediate aquifer system underlies a 5,000-square-mile area within the Southwest Florida Water Management District including De Soto, Sarasota, Hardee, Manatee, and parts of Charlotte, Hillsborough, Highlands, Polk, and Lee Counties.  The intermediate aquifer system is overlain by the surficial aquifer system and is underlain by the Floridan aquifer system.  The intermediate aquifer system consists of layers of sand, shell, clay, calcareous clay, limestone, and dolomite of the Tamiami Formation and Hawthorn Group of Oligocene to Pleistocene age (Wingard and others, 1995).  The intermediate aquifer system contains one or more water-bearing units separated by discontinuous confining units.  The intermediate aquifer system is the principal source of potable water in the southwestern part of the study area and is widely used as a source of water where wells are open to the intermediate aquifer system or to both the intermediate and Floridan aquifer systems.  Yields of individual wells open to the intermediate aquifer system vary from a few gallons to several hundred gallons per minute.  The volume of water withdrawn from the intermediate aquifer system is considerably less than that withdrawn from the Floridan aquifer system in the study area (Duerr and others, 1988).

Additional publication details

Publication type:
Report
Publication Subtype:
USGS Numbered Series
Title:
Potentiometric surfaces of the intermediate aquifer system, west-central Florida, September 2000
Series title:
Open-File Report
Series number:
2001-114
Year Published:
2001
Language:
English
Publisher:
U.S. Geological Survey
Description:
28.53 x 31.61 inches
Country:
United States
State:
Florida
Scale:
500000