[ <a href="http://typhoon.mines.edu/">International Ground Water Modeling Center</a> ]<br>

[ <a href="http://www.ussl.ars.usda.gov/MODELS/MODELS.HTM">USDA Salinity Lab: Hydrus, StAnMod, 3DADE, etc.</a> ]<br>

[ <a href="http://www.epa.gov/ada/csmos/models.html">Center for Subsurface Modeling Support</a> ]<br>

[ <a href="http://www.esinternational.com">Environmental Simulations International: Groundwater Vistas</a> ]<br>

[ <a href="http://www.microfem.com">MicroFEM (et al.)</a> ]<br>

[ <a href="http://water.usgs.gov/software/ground_water.html">USGS</a> ]<br>

[ <a href="http://water.usgs.gov/nrp/gwsoftware/GW_Chart/GW_Chart.html">USGS GW_Chart</a> ]<br>

[ <a href="http://www.aqtesolv.com/demo.htm">AQTESOLV for Windows</a> ]<br>

[ <a href="http://www.cee.uiuc.edu/transport/">UI Interactive Models for Groundwater Flow and Solute Transport</a> ]<br>