An important issue in the application of mathematical models to describe or
predict the fate of solutes in soil and groundwater systems is providing t
he necessary data to support the spatial, temporal, and hydrogeologic model
parameter requirements. The larger, more complex the model and scope of ap
plication, the more likely that significant amounts of data of several type
s are required. A management tool is required that allows the model and the
modeler to interact with various needed databases, cope with numerous data
base management issues, efficiently achieve model parameterization and prov
ide visualization of model output. The three-dimensional Groundwater Modeli
ng System (GMS) that contains a state-of-the-art flow and solute transport
model and a graphical user interface for data manipulation and analysis was
applied to a Superfund site in Florida to demonstrate its capabilities for
predicting solute migration.