aquifer vulnerability assessment of the Paluxy aquifer, central Texas, USA, using GIS and a modified DRASTIC approach

epth to water, net Recharge, Aquifer media, Soil media, Topography, Impact of the vadose zone, and Conductivity of the aquifer). Using such an approach allows one to investigate the potential for groundwater contamination on a regional, rather than site-specific, scale. Based upon data from variable...

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Bibliographic Details
Published in:Environmental management (New York) 2000-03, Vol.25 (3), p.337-345
Main Authors: Fritch, T.G, McKnight, C.L, Yelderman, J.C. Jr, Arnold, J.G
Format: Article
Language:English
Subjects:
AQUIFERS
Contamination
depth to water, net recharge, aquifer media, soil media, impact of the vadose zone, and conductivity of the aquifer
Environmental management
ENVIRONMENTAL SCIENCES
Geographic information systems
GROUND WATER
Groundwater
Groundwater pollution
Groundwater recharge
HYDRAULIC CONDUCTIVITY
INFORMATION SYSTEMS
Mathematical analysis
Mathematical models
Media
MONITORING
Pollution
Pollution abatement
pollution control
Soil permeability
TEXAS
TOPOGRAPHY
Vadose water
Water depth
WATER POLLUTION
Water quality
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Summary:epth to water, net Recharge, Aquifer media, Soil media, Topography, Impact of the vadose zone, and Conductivity of the aquifer). Using such an approach allows one to investigate the potential for groundwater contamination on a regional, rather than site-specific, scale. Based upon data from variables such as soil permeability, depth to water, aquifer hydraulic conductivity, and topography, subjective numerical weightings have been assigned according to the variable's relative importance in regional groundwater quality. The weights for each variable comprise a GIS map layer. These map layers are combined to formulate the final groundwater pollution potential map. Using this method of investigation, the pollution potential map for the study area classifies 47% of the area as having low pollution potential, 26% as having moderate pollution potential, 22% as having high pollution potential, and 5% as having very high pollution potential.
ISSN:0364-152X
1432-1009
DOI:10.1007/s002679910026