Modeling - Field Sampling: Principles and Practices in Environmental Analysis - page 195

FIGURE 7.14 Model of subsurface movement of contaminant.

(USGS). It used finite-difference algorithms of the governing partial differential
equations to model GW flow. There are also contamination transport models that
interface with Modflow. (See Table 7.3 and Appendix B for more information about this
program.)

TABLE 7.3 Commercial Computer Modeling Programs

Program name/abbreviation Type of modeling

GMS 3.1 Groundwater modeling
Modflow Groundwater modeling
SMS Surface water modeling
ChemFlux Contaminant transport modeling
ARC ESRI GIS Data visualization, query analysis, and integration
MrSID Geo Image file handling a
Note: All programs available from RockWare; see Appendix B.
a A sample MrSID is available on the Web at no cost.

In Figure 7.15 there is a compacted layer and contaminant is “leaking” through the layer
into lower layers. This type of situation is impossible to model if the location of the