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PHAST - A Computer Program for Simulating Groundwater Flow, Solute Transport, and Multicomponent Geochemical Reactions

December 5, 2021

Overview of PHAST

Example model grid from PHAST
Example model grid from PHAST.

PHAST Is a computer program for simulating groundwater flow, solute transport, and multicomponent geochemical reactions. It uses PhreeqcRM (Parkhurst and Wissmeier, 2015) for the reaction engine.


Download Current Version of PHAST

Graphical User Interfaces

Batch Versions of PHAST


Documentation for PHAST



 Comments/Bug Reports