U.S. flag

An official website of the United States government

RETC

    Analyzes the hydraulic properties of unsaturated soils.

    N3DADE

      Evaluates analytical solutions for two- and three-dimensional non-equilibrium solute transport.

      HYDRUS-1D

        HYDRUS-1D is a Microsoft Windows-based modeling environment for analysis of water flow and solute transport in variably saturated porous media. The software package includes the one-dimensional finite element model HYDRUS (version 7.0) for simulating the movement of water, heat, and multiple solutes in variably saturated media. The model is supported by an interactive graphics-based interface for data-preprocessing, discretization of the soil profile, and graphic presentation of the results.

        HYDRUS

          Simulates water, heat, and solute movement in one-dimensional variably-saturated porous medium.

          GEOPACK

            Geopack is a comprehensive, user-friendly software package containing several computer programs for carrying out geostatistical analyses of spatially correlated data. The programs were written so that they can be used by scientists, engineers or regulators with little experience in geostatistical techniques and still satisfy the requirements of more advanced users. Using the programs, and spending a little time becoming familiar with geostatistics, the end-user should be able to include the geostatistical techniques in their work and research environment.

            FilmPC

              Estimates the film permeability (i.e., mass transfer coefficient) from the analysis of permeability cell concentration data.

              ExtractChem

                Numerical software package for estimating changes in solution composition due to changes in soil water content.

                ESAP

                  Statistical software package for estimating field scale spatial salinity patterns from electromagnetic induction signal data (for Windows XP)

                  CXTFIT

                    Estimates parameters in several equilibrium and non-equilibrium transport models from laboratory or field tracer experiments.

                    CHAIN2D

                      Simulates the movement of water, heat, and multiple solutes in two dimensional variably-saturated porous media.