SutraPrep: A Text-Based Pre-Processor That Generates 3D, Logically Rectangular SUTRA Meshes and Prepares the Input Files for 3D SUTRA Runs

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Overview of SutraPrep

SutraPrep Manual Cover Image

Cover image from the SutraPrep manual (Open File Report 02-376).

SutraPrep Version 1.0 (3D.1) facilitates the creation of three-dimensional (3D) input datasets for the USGS ground-water flow and transport model SUTRA Version 2.0 (2D3D.1). It is most useful for applications in which the geometry of the 3D model domain and the spatial distribution of physical properties and boundary conditions is relatively simple. SutraPrep can be used to create a SUTRA main input (“.inp”) file, an initial conditions (“.ics”) file, and a 3D plot of the finite-element mesh in Virtual Reality Modeling Language (VRML) format. Input and output are text-based. The code can be run on any platform that has a standard FORTRAN-90 compiler. Executable code is available for Microsoft Windows.

Note: SutraPrep prepares input datasets for SUTRA Version 2.0 (2D3D.1), which can also be read by SUTRA Versions 2.1 and 2.2.


Download Current Version of SutraPrep

The current release is SutraPrep v.1.0 (3D.1).

Use the links below to download the installation files for SutraPlot.  To install the software, follow the instructions provided by the installation program. It is recommended that you accept the default settings during installation.


Documentation for SutraPrep

Provost, A.M., 2002, SutraPrep, a pre-processor for SUTRA, a model for ground-water flow with solute or energy transport: U.S. Geological Survey Open-File Report 02-376, 43 p.,


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Software License and Purchase Information

This software is a product of the U.S. Geological Survey, which is part of the U.S. Government.


This software is freely distributed. There is no fee to download and (or) use this software.


Users do not need a license or permission from the USGS to use this software. Users can download and install as many copies of the software as they need.

Public Domain

As a work of the United States Government, this USGS product is in the public domain within the United States. You can copy, modify, distribute, and perform the work, even for commercial purposes, all without asking permission. Additionally, USGS waives copyright and related rights in the work worldwide through CC0 1.0 Universal Public Domain Dedication ( ).