GFLOW version 2.1.2 is the latest release. Click on GFLOW 2.1.2 Install to download this newest version. Refer to the readme.txt for installation instructions.
PLEASE NOTE: GFLOW uses a Windows help system which cannot be distributed through the install package for the latest operating systems. To download and install this click on the relevant operating system link: Windows Vista, or Windows 7, or Windows 8. Alternatively you may download the help system in pdf format (zip file with pdf files) by clicking here.
What is GFLOW?
GFLOW is a highly efficient stepwise groundwater flow modeling system developed by Haitjema Software, a subdivision of Haitjema Consulting, Inc. GFLOW is a Windows program based on the analytic element method. It models steady state flow in a single heterogeneous aquifer using the Dupuit-Forchheimer assumption. While GFLOW supports some local transient and three-dimensional flow modeling, it is particularly suitable for modeling regional horizontal flow. To facilitate detailed local flow modeling, GFLOW supports a MODFLOW-extract option to automatically generate MODFLOW files in a user defined area with aquifer properties and boundary conditions provided by the GFLOW analytic element model. GFLOW features conjunctive surface water and groundwater modeling using stream networks with calculated streamflow. The conjunctive solutions may include detailed lake waterbalance modeling. GFLOW also supports freshwater and salt water interface flow. GFLOW provides intergrated parameter optimization by use of PEST or UCODE (these programs are included).
What is new in GFLOW?
How to Acquire GFLOW
Try out GFLOW for free by downloading the GFLOW install executable. You will be running the "Educational Version" of GFLOW with some features disabled. If you want to purchase the "Professional Version" of GFLOW click on Order GFLOW and provide the requested information and your preferred method of payment. Upon payment, you will be emailed a "user name" and "unlock key" to change the "Educational Version" on your computer into the "Professional Version". You may also order a GFLOW distribution CD.
Click here to obtain "Analytic Element Modeling of Groundwater Flow"
Owners of "Analytic Element Modeling of Groundwater Flow" click here for software and errata.