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CHEMFLO enables users to simulate water movement and chemical transport in unsaturated soils by solving the Richards equation (water) and the convection-dispersion equation (chemicals). Results can be displayed in graphical form for:


Version 1.3
Release Date August 1990
Development Status general release
Development Information  
Operating System DOS
Development Language  
Intended Audience  
Key Words  
Related Web Sites  

Minimum System Requirements 

To run CHEMFLO, you will need the following:


Unzipping SoftwareExit EPA disclaimer

You will need unzipping (compression) software to uncompress ZIP files. If you need to load unzipping software on your computer, free software is available for download on the internet at the following sites:

Installation Instructions

  1. Refer to the CHEMFLO user’s manual for further instructions.
  2. Go to Windows Explorer and create a directory named CHEMFLO.
  3. Download the installation and program files to the new directory.
  4. In Windows Explorer, locate and unzip the installation and program files to the new directory.
  5. Double-click on the CHEMFLO.EXE file. A description of files unzipped to the directory are provided below:
    • Installation and Program Files – This file contains the executable program.
    • SOIL.S – This file contains soil hydraulic data for several soils. These can be used tobecome familiar with the software. You may then add data for other soils of interest to you.
    • README – This file contains notices, which are not included in this manual, regarding the operation of current version of the software.
    • CONFIG.SYS – This file may be used to install the ANSI.SYS device driver, provided you are not currently using any CONFIG.SYS file on your bootup disk. If you already have a CONFIG.SYS file on your system, it should be modified to install the ANSI.SYS device as explained in the DOS manual.

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