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Water Resources Groundwater Software

This software and related material (data and documentation) are made available by the U.S. Geological Survey (USGS) to be used in the public interest and the advancement of science. You may, without any fee or cost, use, copy, modify, or distribute this software, and any derivative works thereof, and its supporting documentation, subject to the USGS software User's Rights Notice.

You may obtain other electronic or print versions of USGS reports and documentation that are not included with the software distributions.

Groundwater Flow, Transport, and Geochemical Reactions, including Groundwater/Surface-Water Interactions

• BIOMOC (DOS/DG/SGI/Sun) Version 1.0, 1999/03/10
  A multispecies solute-transport model with biodegradation
• CFP (WIN) Version 1.8.00, 2011/02/23
  A variant of MODFLOW-2005 for simulation of laminar and turbulent flow in pipe networks that exchange water with model cells and or in horizontal preferential flow layers
• CRT (DOS) Version 1.3.1, 2017/03/30
  Cascade Routing Tool to Define and Visualize Flow Paths for Grid-Based Watershed Models
• GRIDGEN (WIN) Version 1.00.02, 2017/01/06
  Program for generating layered quadtree grids for MODFLOW-USG
• GSFLOW (Linux/Win) Version 1.2.1, 2016/10/01
  Coupled Groundwater and Surface-water FLOW model based on the USGS Precipitation-Runoff Modeling System (PRMS) and Modular Groundwater Flow Model (MODFLOW-2005)
• GW_Chart (Windows) Version 1.29.0.0, 2015/11/29
  GW_Chart: a program for creating specialized graphs used in groundwater studies.
• GWM (WIN) Version 1.5.2, purportedly 2015-09-11
  Groundwater Management Process for MODFLOW using optimization. Current Versions include GWM-2005 and GWM-VI
• HST3D (Unix/Linux/Win) Version 2.2.16, 2010/10/21
  Three-dimensional flow, heat, and solute transport model
• HydroClimATe (WIN) Version 1.0.0, 2014/03/07
  Computer program for assessing the relations among variable climatic and hydrologic time-series data
• HyDroDSS (Windows) Version 1.0.0.0, 2014/03/27
  Hydrologic Drought Decision Support System
• HYDROTHERM (Linux/Win) Version 3.1.0, 2008/03/01
  Three-dimensional finite-difference model to simulate multiphase groundwater flow and heat transport in the temperature range of 0 to 1,200 degrees Celsius
• INFIL3.0 (Win) Version 1.0, 2008/06/19
  A grid-based, distributed-parameter watershed model to estimate net infiltration below the root zone
• JUPITER API (DOS/Win) Version 1.7.3, 2013/8/6
  The Joint Universal Parameter IdenTification and Evaluation of Reliability Application Programming Interface
• MF2K-FMP and MF2005-FMP2 (Win) Version 1.0.00 and 1.0.00, 2009/10/28 and 2006/05/19
  Farm Process: Estimate dynamically integrated supply-and-demand components of irrigated agriculture as part of the simulation of surface-water and ground-water flow based on MODFLOW-2000 and MODFLOW-2005
• MF2K-GWT (DOS/Unix) Version 1.10, 2018/03/13
  Three-dimensional groundwater flow and solute-transport model integrated with MODFLOW-2000
• MMA (Sun/DOS) Version 1.210, 2011/09/01
  A computer code for analysis of multiple models of the same system using the same observations for calibration
• MODFE (DG/Sun) Version 1.2, 1998/07/08
  Modular finite-element model for areal and axisymmetric ground-water flow problems
• MODFLOW, MODFLOW-2005, and related programs
  Three-dimensional finite-difference groundwater model. Codes included on this link include MODPATH, RADMOD, and ZONEBUDGET.
• MODFLOW-NWT (WIN) Version 1.1.4, 2017/08/01
  A Newton-Raphson formulation for MODFLOW-2005 to improve solution of unconfined groundwater-flow problems
• MODFLOW-OWHM (WIN) Version 1.00.00, 2014/11/05
  MODFLOW-based integrated hydrologic flow model for the analysis of human and natural water movement within a supply-and-demand framework
• MODOPTIM (Win) Version 1.0, 2005/05/05
  A General Optimization Program for Groundwater Flow Model Calibration and Groundwater Management in MODFLOW
• MT3D-USGS (Win) Version 1.1.0, 2019/06/28
  Groundwater solute transport simulator for MODFLOW
• OPR-PPR (Win/DOS) Version 1.01, 2016/01/31
  A Computer Program for Assessing Data Importance to Model Predictions Using Linear Statistics
• PHAST (Linux/Win) Version 2.4.6-8538, 2014/03/24
  A program for simlulating ground-water flow, solute transport, and multicomponent geochemical reactions
• PHREEQC (Mac/Linux/Win) Version 3.2.0-9820, 2015/06/10
  A Computer Program for Speciation, Batch-Reaction, One-Dimensional Transport, and Inverse Geochemical Calculations.
• RRAWFLOW (Win/Unix/Mac) Version 1.16, 2015/04/20
  An R Package providing a lumped-parameter model that simulates streamflow, springflow, groundwater level, solute transport, or cave drip for a measurement point in response to a system input of precipitation, recharge, or solute injection
• SEAWAT Version 4.00.05, 2012/10/19
  A computer program for simulation of three-dimensional variable-density groundwater flow and transport
• SEER (Win) Version 1.0, 2017/05/31
  USGS Scenario Evaluator for Electrical Resistivity
• SHARP (DOS/DG/SGI/Sun) Version 1.1, 2004/09/03
  A quasi-three-dimensional, numerical finite-difference model to simulate freshwater and saltwater flow separated by a sharp interface in layered coastal aquifer systems
• STLK1 and STWT1 (Win) Version 1.0, 2009/12/04
  Computer programs for analysis of hydraulic interaction of stream-aquifer systems
• STRMDEPL08 Version 1.1, 2010/01/26
  A computer program using analytical solutions to calculate streamflow depletion by a nearby pumping well
• SUTRA and related programs
  2D, 3D, variable-density, variably-saturated flow, solute or energy transport
• SUTRA-MS (DOS) Version 1.1, 2014/01/15
  A version of SUTRA for simulating heat and multiple-solute transport
• SWB (Win) Version 1.0.1, 2011/10/03
  A modified Thornthwaite-Mather Soil-Water-Balance code for estimating groundwater recharge
• TopoDrive and ParticleFlow (Sun/Win) Version 1.0, 2002/02/13
  Two Computer Models for Simulation and Visualization of Groundwater Flow and Transport of Fluid Particles in Two Dimensions
• TracerLPM (Win) Version 1, 2012/07/19
  A computer program for interpreting groundwater age distributions from environmental tracer data by using lumped parameter models
• UCODE_2014 (DOS/UNIX) Version 1.004, 2016/02/18
  A computer code for universal inverse modeling.

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Variably-Saturated Flow and Transport

• MF2K-VSF (Win) Version 1.01, 2006/07/05
  Three-Dimentional finite-difference groundwater model (MODFLOW)—2000 version—with variably saturated flow
• R-UNSAT, 2006/04/24
  Reactive, multispecies transport in a heterogeneous, variably-saturated porous media
• SUTRA and related programs
  2D, 3D, variable-density, variably-saturated flow, solute or energy transport
• SUTRA-MS (DOS) Version 1.1, 2014/01/15
  A version of SUTRA for simulating heat and multiple-solute transport
• VS2DH (Sun/Win) Version 3.2, 2004/10/18
  Model for simulating water flow and energy transport in variably saturated porous media
• VS2DI (Win) Version 1.2, 2004/10/18
  A graphical software package for simluating fluid flow and solute or energy transport in variably saturated porous media
• VS2DRTI (Win/Linux) Version 1.4, 2018/06/25
  Package for creating, running, and viewing results for a simulation of flow and heat and reactive solute transport through variably saturated porous media.
• VS2DT (Sun/Win) Version 3.2, 2004/10/18
  Model for simulating water flow and solute transport in variably saturated porous media.

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Hydrograph-Separation and other Streamflow-Based Programs

• Groundwater_Toolbox (WIN) Version 1.3.1, 2017/05/26
  A graphical and mapping interface for analysis of hydrologic data. Includes the hydrograph-analysis programs BFI, HYSEP, PART, and RORA (with RECESS).
• PART (Win) Version 2.0, 2016/08/22
  A computerized method of base-flow-record estimation
• PULSE (Win), 2007/01/29
  Model-Estimated Groundwater Recharge and Hydrograph of Groundwater Discharge to a Stream
• RECESS (Win) Version 2.0, 2016/08/22
  A computer program for analysis of streamflow recession
• RORA (Win) Version 2.0, 2016/08/22
  The recession-curve-displacement method for estimating recharge

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Analysis of Aquifer Tests and Slug Tests

• AIRSLUG (DOS/DG/SGI/Sun) Version 1.1, 1996/03/12
  A Fortran program to generate type curves to interpret the recovery data from prematurely terminated air-pressurized slug tests
• AnalyzeHOLE (Win) Version 1.0.1, 2009/10/19
  An Integrated Wellbore Flow Analysis Tool
• AQTESTSS (Win) Version 1.2, 2004/07/02
  Several spreadsheets for the analysis of aquifer-test and slug-test data
• BAT3 Analyzer (Win) Version 1.0.0.0, 2008/01/31
  Real-Time Data Display and Interpretation Software for the Multifunction Bedrock-Aquifer Transportable Testing Tool (BAT3)
• FLASH (Win) Version 1.0, 2011/03/07
  A Computer Program for Flow-Log Analysis of Single Holes
• SeriesSEE (Win) Version 1.00, 2012/12/21
  A spreadsheet add-in for viewing time series and modeling water levels
• WTAQ (Win) Version 2.1, 2017/04/14
  A computer program for calculating drawdowns and estimating hydraulic properties for confined and water-table aquifers

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Graphical User Interfaces and Post Processors

• EXTRACTOR (Win) Version 1.0, 2005/05/04
  Extracts data from MODFLOW head or drawdown files or from MODFLOW-GWT.
• Five MODFLOW Utilities (DOS/Win) Version 1.2.1, 2011/09/01
  Five MODFLOW Groundwater Modeling Utility Programs
• Groundwater_Toolbox (WIN) Version 1.3.1, 2017/05/26
  A graphical and mapping interface for analysis of hydrologic data. Includes the hydrograph-analysis programs BFI, HYSEP, PART, and RORA (with RECESS).
• GW_Chart (Windows) Version 1.29.0.0, 2015/11/29
  GW_Chart: a program for creating specialized graphs used in groundwater studies.
• HUFPrint (DOS/Win) Version 1.2.2, 2013/05/17
  A tabulation and visualization utility for the Hydrogeologic-Unit Flow (HUF) Package of MODFLOW
• Model Viewer (Win) Version 1.6, 2012/09/24
  Model Viewer is a computer program that displays the results of three-dimensional groundwater models
• ModelArchiver and FgdcMeta Editor (Windows) Version 1.0.0.0, 2018/03/01
  ModelArchiver: A Program for Facilitating the Creation of Groundwater Model Archives
• ModelMate (DOS/Win) Version 1.0.3, 2016/2/16
  A graphical user interface (GUI) for model analysis. ModelMate supports UCODE_2005 or UCODE_2014 (UCODE), MODFLOW-2005 (MODFLOW), and ModelMuse.
• ModelMuse (Windows) Version 3.10.0.0, 2018/3/2
  ModelMuse: A Graphical User Interface for MODFLOW-2005, MODFLOW-LGR, MODFLOW-LGR2, MODFLOW-NWT, MODFLOW-CFP, MODFLOW-OWHM, MT3DMS, SUTRA, PHAST, MODPATH, ZONEBUDGET and WellFootprint
• MODFLOW-GUI (Win) Version 4.35.0.0, 2013/11/29
  Graphical Pre- and post-processor for use with the MODFLOW, MOC3D, MF2K-GWT, MT3DMS, MODPATH, and ZONEBUDGET models, for use within Argus ONE
• MoisturEC (Windows/Mac/Linux) Version 1.0, 2018/02/28
  R-based GUI to combine electrical conductivity data with point moisture measurements
• PhreeqcI (Win) Version 3.2.0-9820, 2015/06/10
  Graphical user interface for PHREEQC
• PhreeqcRM (Win) Version 3.2.0, 2015/06/20
  PhreeqcRM is a module for use as a reaction engine for operator-splitting reactive-transport models.
• PHRQCGRF (Win) Version 2.2, 2000/03/23
  A Computer Program for Graphical Interpretation of PHREEQC Geochemical Transport Simulations
• Scenario Tools: Scenario Manager and Scenario Analyzer (DOS/Win) Version 1.0.0, 2014/04/15
  Scenario Tools: Scenario Manager and Scenario Analyzer, Graphical user interfaces for managing and analyzing MODFLOW groundwater model scenarios.
• SEER (Win) Version 1.0, 2017/05/31
  USGS Scenario Evaluator for Electrical Resistivity
• Utility_PIEs (Windows) Version 1.10.1.0, 2014/03/06
  Utility PIEs: Programs for simplifying the analysis of geographic information in U.S. Geological Survey ground-water models for use within Argus Open Numerical Environments (Argus ONE)
• WellFootprint (Win) Version 1.0.0.0, 2017/12/19
  A Program for Visualization of Groundwater Withdrawals
• ZONECONC (Win) Version 1.5, 2005/10/25
  A postprocessing program that tabulates concentration statistics from concentration data generated by MODFLOW-GWT

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Miscellaneous Software

• GAMACTT (online) Version 1.0, 2014/08/28
  'Groundwater Age Mixtures and Contaminant Trends Tool' is an interactive educational webtool illustrating effects of groundwater age distributions on nonpoint-source contamination responses of wells and groundwater discharges.
• WATEQ4F (DOS) Version 3.00, 2011/03/10
  A program for calculating speciation of major, trace, and redox elements in natural waters

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Legacy and Superseded software, and software that is not actively supported by the USGS

See entire listing of Retired software

Abbreviations for OSs

Computer systems for which software distribution packages have been compiled are shown in parentheses following the software name; abbreviations used are defined as follows:

• DOS - IBM-compatible PC, 386 or higher with math coprocessor
• DG - Data General AViiON DG/UX
• Linux - Red Hat 6.1 for i386
• Mac - Macintosh
• SGI - Silicon Graphics Indigo
• Sun - Sun SPARCstation Solaris
• Win - Microsoft Windows
• online - the application runs directly from its webpage.

New or Recently Updated Software

Software which has a recent release date will be annotated with one of three icons, in descending level of visual imperative.

– released in last 28 days
– released in last 56 days
– released in last 112 days

A separate web page is available listing recently updated software.