Geohydrology and susceptibility of major aquifers to surface contamination in Alabama; area 4
Water-Resources Investigations Report
88-4133
By: Michael Planert and J.L. Pritchett Jr.
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Abstract
The U.S. Geological Survey, in cooperation with the Alabama Department of Environmental Management, is conducting a series of geohydrologic studies to delineate the major aquifers (those which provide water for public supplies) in Alabama, their recharge areas, and areas susceptible to contamination. This report summarizes these factors for two major aquifers in Area 4--Calhoun, Jefferson, St. Clair, Shelby, and Talladega Counties. The major aquifers in the study area are in Cambrian and Ordovician and Mississippian rocks. Highest yields from aquifers are associated with solution openings in carbonate rocks. Springs in the area provide substantial amounts of water for municipal supply. Coldwater Spring provides 17 million gal of water/day to the city of Anniston, the largest groundwater user in the area. All recharge areas for the aquifers are susceptible to contamination from land surface. Two conditions exist in the study area that may cause the aquifers to be highly susceptible to contamination on a local scale: fracturing of rock materials due to faulting and the production of a porous cherty soil through weathering. Where sinkholes are present, there may be a direct connection between the land surface and the aquifer. Areas with sinkholes are considered to be extremely susceptible to contamination. (USGS)
| Publication type | Report |
|---|---|
| Publication Subtype | USGS Numbered Series |
| Title | Geohydrology and susceptibility of major aquifers to surface contamination in Alabama; area 4 |
| Series title | Water-Resources Investigations Report |
| Series number | 88-4133 |
| DOI | 10.3133/wri884133 |
| Edition | - |
| Year Published | 1989 |
| Language | ENGLISH |
| Publisher | U.S. Geological Survey ; Books and Open-File Reports [distributor], |
| Description | iv, 31 p. :ill. (some col.), maps (some col.) ;28 cm. |
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