• Organization: Department of Agriculture
• Updated: 2025-11-22

UNSATCHEM is a software package for simulating water, heat, carbon dioxide and solute movement in one-dimensional variably saturated media. The software consists of the UNSCHEM (version 2.0)...

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• Organization: Department of Agriculture
• Updated: 2025-11-21

SWMS_3D is a computer program for simulating water and solute movement in three-dimensional variably saturated media. The program numerically solves the Richards' equation for...

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• Organization: Department of Agriculture
• Updated: 2025-11-21

3DADE is a Fortran computer program for evaluating a series of analytical solutions of the 3-Dimensional Advection-Dispersion Equation. The analytical solutions pertain to three-dimensional solute...

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• Organization: Department of Agriculture
• Updated: 2025-11-21

SWMS_2D is a computer program for simulating water and solute movement in two-dimensional variably saturated media. The program numerically solves the Richards' equation for saturated-unsaturated...

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• Organization: Department of Agriculture
• Updated: 2025-11-21

This research report documents the Fortran program N3DADE (Nonequilibrium 3-Dimensional Advection-Dispersion Equation) which may be used to evaluate analytical solutions described by Leij et al....

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• Organization: Department of Agriculture
• Updated: 2024-02-15

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...

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• Organization: Department of Agriculture
• Updated: 2024-02-15

The HYDRUS program is a finite element model for simulating the one-dimensional movement of water, heat, and multiple solutes in variably saturated media. The program numerically solves the...

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• Organization: Department of the Interior
• Updated: 2020-11-17T00:00:00Z

A three-dimensional, variable-density solute-transport model (SEAWAT) was developed to examine causes of saltwater intrusion and predict the effects of future alterations to the hydrologic system...

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• Organization: Department of Agriculture
• Updated: 2025-11-22

Lysimeters are instruments that measure water and/or solute movement in soils. The primary purpose for these lysimeters was to measure evapotranspiration (ET); these data describe changes in soil...

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