README.TXT                                            February 12, 2001

                       TopoDrive and ParticleFlow

      Two Computer Models for Simulation and Visualization of 
  Ground-Water Flow and Transport of Fluid Particles in Two Dimensions 

                              Version 1.0


                                 for
                 Windows 95, 98, 2000 or Windows NT 4.0


                          TABLE OF CONTENTS

                          A. SYSTEM REQUIREMENTS
                          B. DISTRIBUTION FILE
                          C. DOCUMENTATION
                          D. INSTALLING
                          E. RUNNING THE SOFTWARE
                          F. UNINSTALLING


A. SYSTEM REQUIREMENTS

To installation and run the software, the following are necessary:

  - Windows 95, 98, 2000 or Windows NT 4.0
  - 4 MB of disk space
  - An application to view Portable Document Format (PDF) files,
    such as Adobe Acrobat Reader.


B. DISTRIBUTION FILE

The following distribution file is currently available:

  tdpf1_0.exe  - for Windows 95, 98, 2000, or Windows NT 4.0


C. DOCUMENTATION

Hsieh, P.A., 2001, TopoDrive and ParticleFlow--Two Computer Models 
for Simulation and Visualization of Ground-Water Flow and Transport 
of Fluid Particles in Two Dimensions: U.S. Geological Survey 
Open-File Report 01-286, 30 p. 

A PDF version of this report is included with the software distribution.


D. INSTALLING

To install the software, double-click tdpf1_0.exe. This will
execute the installation program. Follow the directions on 
the screen.

By default, the software is installed in the directory
C:\Program Files\USGS\tdpf1.0.  This is the recommended installation 
directory, but you may use other directories or disk drives.


E. RUNNING THE SOFTWARE

After installation as described above, the software can be run 
as follows:

1. Click the "Start" button
2. Select "Programs"
3. Select "TopoDrive & ParticleFlow"
4  Click:
     TopoDrive -- to run the program TopoDrive
     ParticleFlow -- to run the program ParticleFlow
     User's Guide -- to view the user's guide


F. UNINSTALLING

The following procedure is used to uninstall the software:

1. Click the "Start" menu, then click "Settings", and finally 
   click "Control Panel". The Control Panel is displayed.
2. Double Click on "Add/Remove Programs". 
   The "Add/Remove Programs Properties" dialog box is displayed.
3. From the list of installed programs, select "TopoDrive & ParticleFlow".
4. Click "Add/Remove". Windows will uninstall the application.