Downloading SUTRA 2.2.2.0 from the developer's website was possible when we last checked. We cannot confirm if there is a free download of this software available. SUTRA is categorized as Photo & Graphics Tools.
This free PC program was developed to work on Windows XP, Windows 7, Windows 8, Windows 10 or Windows 11 and can function on 32-bit systems. This free software was originally designed by US Geological Survey.
The following versions: 2.2, 2.1 and 1.0 are the most frequently downloaded ones by the program users. Sutra 2013-14.exe, Sutra 2014-15 v.29.exe, Sutra 2014-15.exe or Sutra.exe are the default file names to indicate the SUTRA installer. According to the results of the Google Safe Browsing check, the developer's site is safe. Despite this, we recommend checking the downloaded files with any free antivirus software.
From the developer:
SutraGUI Version 2.2.1.0 is a graphical environment for setting up and executing 2D and 3D SUTRA runs, and for visualizing results from 2D SUTRA runs. It is compatible with SUTRA Version 2.1 and requires Argus Open Numerical Environments (Argus ONE). SutraGUI, a flexible graphical user-interface (GUI) that supports twodimensional (2D) and three-dimensional (3D) simulation with the U.S.
You may want to check out more software, such as SutraPlot 2D3D.1 or Budgeteer, which might be related to SUTRA.