Groundwater Modeling

gwGroundwater modeling has long been a mainstay of the practice of Mutch Associates’ groundwater hydrologists. Robert Mutch, the firm’s founder and President, has been applying numerical modeling of groundwater flow and contaminant transport to the development of solutions to a variety of groundwater-related issues since the early 1980s. From the earliest DOS-based programs to modern finite element and finite difference models, the principal objective has always been the same – to judiciously use these increasingly more powerful tools to more clearly understand hydrogeologic systems and to develop better, more cost-effective solutions to groundwater problems.

Mutch Associates’ groundwater hydrologists and environmental engineers have also developed their own computer codes to model the behavior of phenomenon such as:

  • Reactive transport of in-situ treatment agents through aquifer systems accounting for reactions between the treatment agent and mobile and immobile target species and between the treatment agent and the immobile aquifer solids.
    These user-defined reactive transport codes work seamlessly with MODFLOW and RT3D to permit three-dimensional reactive transport modeling of almost any in-situ treatment scenario.
  • The diffusion of contaminants into and out of the matrix of fractured rock (Mutch, Scott, and Wilson, 1993). Simple chemical interactions between the COCs and treatment agents can also be modeled by the most recent version of the program. This program can be downloaded free of charge by navigating to the Downloads section of this website
  • Aquifer testing of areally anisotropic, fractured rock aquifers using the transformed distance-drawdown method (Mutch, 2005). This program and technical paper describing the method can be downloaded in the Downloads section of the site.