Selected Monographs Accounting for Resistance to 3D Flow (.pdf) Methodology for estimating resistance to vertical flow in a Dupuit-Forchheimer approximation model in the vicinity of a horizontal or radial collector well using GFLOW. Calculated Fixed Radius Issues (.pdf) Theory of the calculated fixed radius capture zone delineation method based on discussion of the USEPA "Microbial Contamination Workshop" in Irvine, CA, 1996. Dealing with Resistance to Flow into Surface Waters (.pdf) Guidelines for selecting resistance and width parameters for line-sink strings in GFLOW and WhAEM 2000. Freshwater and Saltwater Interface Flow in GFLOW (.pdf) Theory of dual density flow applied to modeling freshwater and saltwater interfaces in GFLOW. Managing Hydrological Units in GFLOW (.pdf) Guidelines for managing Hydrological Units in GFLOW. Modeling Flow in the Vertical Plane with GFLOW (.pdf) Methodology for modeling flow in the vertical plane in single layer, multilayer, and multiple aquifer systems in GFLOW. Modeling Lake-Groundwater Interactions in GFLOW (.pdf) Discussion on how to use the "lake" feature in GFLOW for calculating lake stages using water balance or how to model lakes as high conductivity domains. Solution Strategies in GFLOW (.pdf) GFLOW methods for solving for unknown strength parameters. Theory of Modeling Inhomogeneity Domains in GFLOW (.pdf) Theoretical framework for the implementation of inhomogeneity domains in GFLOW. Working with CAD and Shapefiles (.pdf) Methodology for integrating shapefiles and Binary Bit Maps (BBMs) in GFLOW. Click on the button below to download Adobe Acrobat Reader