Groundwater Model Development Completed
MODFLOW is the USGS's modular hydrologic model.
MODFLOW is considered an international standard for simulating and predicting groundwater conditions and groundwater/surface-water interactions.
Originally developed and released solely as a groundwater-flow simulation code when first published in 1984, MODFLOW's modular structure has provided a robust framework for integration of additional simulation capabilities that build on and enhance its original scope. The family of MODFLOW-related programs now includes capabilities to simulate coupled groundwater/surface-water systems, solute transport, variable-density flow (including saltwater), aquifer-system compaction and land subsidence, parameter estimation, and groundwater management.
MODFLOWP is a modification of the U.S. Geological Survey's modular finite-difference ground-water flow model (MODFLOW) that allows automated parameter estimation using nonlinear regression. From the introduction of MODFLOWP to the present, MODFLOW and MODFLOWP have been distinct computer codes, which differ substantially in ease of use and in ease of modification. Although numerous capabilities have been added to MODFLOW, the addition of support for estimating parameters related to the new capabilities has not kept pace, primarily because of the difficulties associated with adding new parameter-estimation capabilities to MODFLOWP in its present version. The degree of difficulty is due partly to the nonmodular structure of MODFLOWP. The project is a combined effort by the USGS Office of Ground Water, the National Research Program, and the Colorado Water Science Center.
MODFLOW and Related Programs
Below are publications associated with this project.
Documentation for the MODFLOW 6 Groundwater Flow Model
Documentation for the MODFLOW 6 framework
Two graphical user interfaces for managing and analyzing MODFLOW groundwater-model scenarios
GWM-VI: groundwater management with parallel processing for multiple MODFLOW versions
MODFLOW-CDSS, a version of MODFLOW-2005 with modifications for Colorado Decision Support Systems
User Guide for HUFPrint, A Tabulation and Visualization Utility for the Hydrogeologic-Unit Flow (HUF) Package of MODFLOW
Building model analysis applications with the Joint Universal Parameter IdenTification and Evaluation of Reliability (JUPITER) API
JUPITER: Joint Universal Parameter IdenTification and Evaluation of Reliability - An Application Programming Interface (API) for Model Analysis
UCODE_2005 and six other computer codes for universal sensitivity analysis, calibration, and uncertainty evaluation constructed using the JUPITER API
A new streamflow-routing (SFR1) package to simulate stream-aquifer interaction with MODFLOW-2000
MODFLOW-2000, the U.S. Geological Survey modular ground-water model; user guide to the observation, sensitivity, and parameter-estimation processes and three post-processing programs
MODFLOW-2000, The U.S. Geological Survey modular ground-water model: User guide to modularization concepts and the ground-water flow process
Below are data or web applications associated with this project.
MODFLOW
MODFLOW is the USGS's three-dimensional (3D) finite-difference groundwater model. MODFLOW is considered an international standard for simulating and predicting groundwater conditions and groundwater/surface-water interactions.
Below are software products associated with this project.
Software - MODFLOW
MODFLOW is the USGS's modular hydrologic model. MODFLOW is considered an international standard for simulating and predicting groundwater conditions and groundwater/surface-water interactions.
MODFLOW 6: USGS Modular Hydrologic Model
MODFLOW is a popular open-source groundwater flow model distributed by the U.S. Geological Survey.
- Overview
MODFLOW is the USGS's modular hydrologic model.
MODFLOW is considered an international standard for simulating and predicting groundwater conditions and groundwater/surface-water interactions.
Originally developed and released solely as a groundwater-flow simulation code when first published in 1984, MODFLOW's modular structure has provided a robust framework for integration of additional simulation capabilities that build on and enhance its original scope. The family of MODFLOW-related programs now includes capabilities to simulate coupled groundwater/surface-water systems, solute transport, variable-density flow (including saltwater), aquifer-system compaction and land subsidence, parameter estimation, and groundwater management.
MODFLOWP is a modification of the U.S. Geological Survey's modular finite-difference ground-water flow model (MODFLOW) that allows automated parameter estimation using nonlinear regression. From the introduction of MODFLOWP to the present, MODFLOW and MODFLOWP have been distinct computer codes, which differ substantially in ease of use and in ease of modification. Although numerous capabilities have been added to MODFLOW, the addition of support for estimating parameters related to the new capabilities has not kept pace, primarily because of the difficulties associated with adding new parameter-estimation capabilities to MODFLOWP in its present version. The degree of difficulty is due partly to the nonmodular structure of MODFLOWP. The project is a combined effort by the USGS Office of Ground Water, the National Research Program, and the Colorado Water Science Center.
- Science
MODFLOW and Related Programs
MODFLOW is the USGS's modular hydrologic model. MODFLOW is considered an international standard for simulating and predicting groundwater conditions and groundwater/surface-water interactions. MODFLOW 6 is presently the core MODFLOW version distributed by the USGS. The previous core version, MODFLOW-2005, is actively maintained and supported as well. - Publications
Below are publications associated with this project.
Documentation for the MODFLOW 6 Groundwater Flow Model
This report documents the Groundwater Flow (GWF) Model for a new version of MODFLOW called MODFLOW 6. The GWF Model for MODFLOW 6 is based on a generalized control-volume finite-difference approach in which a cell can be hydraulically connected to any number of surrounding cells. Users can define the model grid using one of three discretization packages, including (1) a structured discretization pacAuthorsChristian D. Langevin, Joseph D. Hughes, Edward R. Banta, Richard G. Niswonger, Sorab Panday, Alden M. ProvostDocumentation for the MODFLOW 6 framework
MODFLOW is a popular open-source groundwater flow model distributed by the U.S. Geological Survey. Growing interest in surface and groundwater interactions, local refinement with nested and unstructured grids, karst groundwater flow, solute transport, and saltwater intrusion, has led to the development of numerous MODFLOW versions. Often times, there are incompatibilities between these different MAuthorsJoseph D. Hughes, Christian D. Langevin, Edward R. BantaTwo graphical user interfaces for managing and analyzing MODFLOW groundwater-model scenarios
Scenario Manager and Scenario Analyzer are graphical user interfaces that facilitate the use of calibrated, MODFLOW-based groundwater models for investigating possible responses to proposed stresses on a groundwater system. Scenario Manager allows a user, starting with a calibrated model, to design and run model scenarios by adding or modifying stresses simulated by the model. Scenario Analyzer faAuthorsEdward R. BantaGWM-VI: groundwater management with parallel processing for multiple MODFLOW versions
Groundwater Management–Version Independent (GWM–VI) is a new version of the Groundwater Management Process of MODFLOW. The Groundwater Management Process couples groundwater-flow simulation with a capability to optimize stresses on the simulated aquifer based on an objective function and constraints imposed on stresses and aquifer state. GWM–VI extends prior versions of Groundwater Management in tAuthorsEdward R. Banta, David P. AhlfeldMODFLOW-CDSS, a version of MODFLOW-2005 with modifications for Colorado Decision Support Systems
MODFLOW-CDSS is a three-dimensional, finite-difference groundwater-flow model based on MODFLOW-2005, with two modifications. The first modification is the introduction of a Partition Stress Boundaries capability, which enables the user to partition a selected subset of MODFLOW's stress-boundary packages, with each partition defined by a separate input file. Volumetric water-budget components of eaAuthorsEdward R. BantaUser Guide for HUFPrint, A Tabulation and Visualization Utility for the Hydrogeologic-Unit Flow (HUF) Package of MODFLOW
This report documents HUFPrint, a computer program that extracts and displays information about model structure and hydraulic properties from the input data for a model built using the Hydrogeologic-Unit Flow (HUF) Package of the U.S. Geological Survey's MODFLOW program for modeling ground-water flow. HUFPrint reads the HUF Package and other MODFLOW input files, processes the data by hydrogeologicAuthorsEdward R. Banta, Alden M. ProvostBuilding model analysis applications with the Joint Universal Parameter IdenTification and Evaluation of Reliability (JUPITER) API
The open-source, public domain JUPITER (Joint Universal Parameter IdenTification and Evaluation of Reliability) API (Application Programming Interface) provides conventions and Fortran-90 modules to develop applications (computer programs) for analyzing process models. The input and output conventions allow application users to access various applications and the analysis methods they embody withAuthorsE. R. Banta, M. C. Hill, E. Poeter, J.E. Doherty, J. BabendreierJUPITER: Joint Universal Parameter IdenTification and Evaluation of Reliability - An Application Programming Interface (API) for Model Analysis
he Joint Universal Parameter IdenTification and Evaluation of Reliability Application Programming Interface (JUPITER API) improves the computer programming resources available to those developing applications (computer programs) for model analysis.The JUPITER API consists of eleven Fortran-90 modules that provide for encapsulation of data and operations on that data. Each module contains one or moUCODE_2005 and six other computer codes for universal sensitivity analysis, calibration, and uncertainty evaluation constructed using the JUPITER API
This report documents the computer codes UCODE_2005 and six post-processors. Together the codes can be used with existing process models to perform sensitivity analysis, data needs assessment, calibration, prediction, and uncertainty analysis. Any process model or set of models can be used; the only requirements are that models have numerical (ASCII or text only) input and output files, that theAuthorsEileen E. Poeter, Mary C. Hill, Edward R. Banta, Steffen Mehl, Steen ChristensenA new streamflow-routing (SFR1) package to simulate stream-aquifer interaction with MODFLOW-2000
The increasing concern for water and its quality require improved methods to evaluate the interaction between streams and aquifers and the strong influence that streams can have on the flow and transport of contaminants through many aquifers. For this reason, a new Streamflow-Routing (SFR1) Package was written for use with the U.S. Geological Survey's MODFLOW-2000 ground-water flow model. The SFR1AuthorsDavid E. Prudic, Leonard F. Konikow, Edward R. BantaMODFLOW-2000, the U.S. Geological Survey modular ground-water model; user guide to the observation, sensitivity, and parameter-estimation processes and three post-processing programs
This report documents the Observation, Sensitivity, and Parameter-Estimation Processes of the ground-water modeling computer program MODFLOW-2000. The Observation Process generates model-calculated values for comparison with measured, or observed, quantities. A variety of statistics is calculated to quantify this comparison, including a weighted least-squares objective function. In addition, a numAuthorsMary C. Hill, E. R. Banta, A.W. Harbaugh, E.R. AndermanMODFLOW-2000, The U.S. Geological Survey modular ground-water model: User guide to modularization concepts and the ground-water flow process
MODFLOW is a computer program that numerically solves the three-dimensional ground-water flow equation for a porous medium by using a finite-difference method. Although MODFLOW was designed to be easily enhanced, the design was oriented toward additions to the ground-water flow equation. Frequently there is a need to solve additional equations; for example, transport equations and equations for esAuthorsArlen W. Harbaugh, Edward R. Banta, Mary C. Hill, Michael G. McDonald - Web Tools
Below are data or web applications associated with this project.
MODFLOW
MODFLOW is the USGS's three-dimensional (3D) finite-difference groundwater model. MODFLOW is considered an international standard for simulating and predicting groundwater conditions and groundwater/surface-water interactions.
- Software
Below are software products associated with this project.
Software - MODFLOW
MODFLOW is the USGS's modular hydrologic model. MODFLOW is considered an international standard for simulating and predicting groundwater conditions and groundwater/surface-water interactions.
MODFLOW 6: USGS Modular Hydrologic Model
MODFLOW is a popular open-source groundwater flow model distributed by the U.S. Geological Survey.