Abstract
Using GIS to Characterize Groundwater Aquifer for San Jacinto Basin Track: Modeling Author(s): Fakhri Manghi, Bob Palmer Developing an appropriate conceptual model is the key to a successful groundwater modeling study. Model calibration errors associated with inaccuracies in describing aquifer stratigraphy, boundary conditions, and aquifer properties such as hydraulic conductivity are more important than errors associated with inaccuracies in aquifer stress. Lithologic logs offer descriptive information on the porous materials along the drilled depths of wells and include a description of soil types such as silt with siltstone, silt and sand, silt and sand and gravel, clay with gravel, and sand with gravel, to name a few. A Visual Basic program was developed to convert soil descriptions into numerical values for aquifer properties. GIS technology, a computer mapping and data management tool, is utilized for estimating grids aquifer properties and describing the stratigraphy system for the San Jacinto Groundwater Basin Numerical Model. Fakhri Manghi Eastern Municipal Water District Water Resources Managment 2270 Trumble Rd. Perris , CA 92572 US Phone: 951 928-3777 E-mail: manghif@emwd.org Bob Palmer Eastern Municipal Water District Information Systems 2270 Trumble Road Perris , CA 92572-8300 US Phone: 951-928-3777 E-mail: palmerb@emwd.org |
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