ABSTRACT
Since the 1970s, water professionals have increasingly accepted the usefulness of groundwater simulation modeling. Despite the hidden nature of groundwater and aquifers, relative data sparsity, and the need for simplifying assumptions, simulation models (here termed S models) have proved indispensable. They have predicted groundwater ¡ow, head, and contaminant transport with accuracy suf‹cient to solve critical issues, develop alternative management solutions, and help provide vital water supplies.
