UTRA is a groundwater modeling code published by the United States Geological Survey. In many ways, it is similar to MODFLOW. SUTRA solves equations that simulate groundwater flow, solute transport with adsorption and decay, and thermal energy transport in groundwater. SUTRA can handle both steady-state or transient simulations. Physical properties can be projected on nodes or elements, or can be represented as a functions. Fluid density and viscosity are functions of temperature and solute concentration. Unsaturated flow properties are handled by a subroutine, UNSAT. Each node and element passes properties to and from UNSAT, which models flow through a series of unsaturated flow functions. Like MODFLOW, SUTRA communicates with input and output text files and runs in Fortran.MODFLOW-USG, coming soon. А скоро и еще одна будет.
Водопровод. Интересный сайт с заметками о водоснабжении, в том числе и о гидрогеологическом моделировании. Вроде как блог, но логики в навигации сильно недостает.
MODFLOW-USG (unstructured grid) is a new version of MODFLOW being developed by Sorab Panday of GMS.
According to the Aquaveo forum, MODFLOW-USG will probably be fully released at some point in 2012.