Abstract
 A GIS Model for Assessing Recharge Potential Track: GIScience Author(s): Weldon Hammond Jr., Amy Hardberger A recharge probability model was produced using GIS ArcView. Several variables that have a direct impact on recharge, such as the presence of stream valleys, soils, vegetation, fractures, land use, slope, and geology, were included in the model as layers. Grids of 200 x 200 meters were generated from these views. A rating scheme was assigned to each layer based on their recharge effectiveness. Individual rated layers were then summed for a cumulative recharge probability per grid unit. The final GIS recharge probability map had a rating scale ranging from zero to eighty-seven. The higher values were generally a result of the dual presence of formation outcrop and fractures. Weldon Hammond Jr. University of Texas at San Antonio Center for Water Research 6900 N. Loop 1604 West San Antonio , TX 78249-0663 US Phone: 2104585468 Fax: 2104585753 E-mail: weldon.hammond@utsa.edu Amy Hardberger Texas Tech University School of Law 3406 31st St. Lubbock 79411 US Phone: 80679290-49 E-mail: ahardberger@yahoo.com |
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