Model:MODFLOW

Contact

Name	Paul Barlow
Type of contact	Model developer
Institute / Organization	U.S. Geological Survey
Postal address 1	431 National Center
Postal address 2
Town / City	Reston
Postal code	20192
State	Virginia
Country	USA"USA" is not in the list (Afghanistan, Albania, Algeria, Andorra, Angola, Antigua and Barbuda, Argentina, Armenia, Australia, Austria, ...) of allowed values for the "Country" property.
Email address	pbarlow@usgs.gov
Phone
Fax

Name	Arlen Harbaugh
Type of contact	Model developer
Institute / Organization	U.S. Geological Survey
Postal address 1	431 National Center
Postal address 2
Town / City	Reston
Postal code	20192
State	Virginia
Country	USA"USA" is not in the list (Afghanistan, Albania, Algeria, Andorra, Angola, Antigua and Barbuda, Argentina, Armenia, Australia, Austria, ...) of allowed values for the "Additional country" property.
Email address	harbaugh@usgs.gov
Phone
Fax

Name	Edward Banta
Type of contact	Model developer
Institute / Organization	U.S. Geological Survey
Postal address 1	431 National Center
Postal address 2
Town / City	Reston
Postal code	20192
State	Virginia
Country	USA"USA" is not in the list (Afghanistan, Albania, Algeria, Andorra, Angola, Antigua and Barbuda, Argentina, Armenia, Australia, Austria, ...) of allowed values for the "Additional country" property.
Email address	erbanta@usgs.gov
Phone
Fax

Name	Mary Hill
Type of contact	Model developer
Institute / Organization	U.S. Geological Survey
Postal address 1	431 National Center
Postal address 2
Town / City	Reston
Postal code	20192
State	Virginia
Country	USA"USA" is not in the list (Afghanistan, Albania, Algeria, Andorra, Angola, Antigua and Barbuda, Argentina, Armenia, Australia, Austria, ...) of allowed values for the "Additional country" property.
Email address	mchill@usgs.gov
Phone
Fax

Name	Richard Winston
Type of contact	Model developer
Institute / Organization	U.S. Geological Survey
Postal address 1	431 National Center
Postal address 2
Town / City	Reston
Postal code	20192
State	Virginia
Country	USA"USA" is not in the list (Afghanistan, Albania, Algeria, Andorra, Angola, Antigua and Barbuda, Argentina, Armenia, Australia, Austria, ...) of allowed values for the "Additional country" property.
Email address	rbwinst@usgs.gov
Phone
Fax

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MODFLOW

Metadata

Summary Also known as Model type Modular Model part of larger framework Note on status model Date note status model basins, Technical specs Supported platforms Unix, Linux, Mac OS, Windows Other platform Programming language Fortran77, Fortran90, C Other program language Code optimized Single Processor, Parallel Computing"Parallel </br>Computing" is not in the list (Single Processor, Multiple Processors) of allowed values for the "Code optimized" property. Multiple processors implemented Nr of distributed processors Nr of shared processors Start year development 1984 Does model development still take place? Yes If above answer is no, provide end year model development Code development status When did you indicate the 'code development status'? Model availability As code Source code availability (Or provide future intension) Through web repository Source web address http://water.usgs.gov/nrp/gwsoftware/modflow2000/modflow2000.html Source csdms web address Program license type Other Program license type other Non-commercial MODFLOW versions are free, however, their licensing usually limit the use to non-profit educational or research purposes. Memory requirements -- Typical run time -- In/Output Describe input parameters Too many to mention here, see: http://water.usgs.gov/nrp/gwsoftware/modflow2000/modflow2000.html Input format Other input format Describe output parameters Too many to mention here, see: http://water.usgs.gov/nrp/gwsoftware/modflow2000/modflow2000.html Output format ASCII, Binary Other output format Pre-processing software needed? No Describe pre-processing software Post-processing software needed? No Describe post-processing software Visualization software needed? No If above answer is yes Other visualization software Process Describe processes represented by the model The ground-water flow equation is solved using the finite-difference approximation. The flow region is subdivided into blocks in which the medium properties are assumed to be uniform. In plan view the blocks are made from a grid of mutually perpendicular lines that may be variably spaced. Model layers can have varying thickness. A flow equation is written for each block, called a cell. Several solvers are provided for solving the resulting matrix problem; the user can choose the best solver for the particular problem. Flow-rate and cumulative-volume balances from each type of inflow and outflow are computed for each time step. Describe key physical parameters and equations -- Describe length scale and resolution constraints -- Describe time scale and resolution constraints -- Describe any numerical limitations and issues -- Testing Describe available calibration data sets -- Upload calibration data sets if available: Describe available test data sets Test data sets are provided to verify that MODFLOW-2000 is correctly installed and running on the system. The tests may also be looked at as examples of how to use the program. Upload test data sets if available: Describe ideal data for testing -- Other Do you have current or future plans for collaborating with other researchers? Is there a manual available? Yes Upload manual if available: Model website if any http://water.usgs.gov/nrp/gwsoftware/modflow2000/MFDOC/index.html Model forum / discussion board Please send comments and corrections to Richard B. Winston (rbwinst@usgs.gov). Comments Disclaimer Although every effort is made to provide timely and accurate information, the authors, the U.S. Geological Survey (USGS), and the U.S. Government make no warranty, expressed or implied, as to the timeliness or accuracy of the contents of this web site, which may be updated and revised at any time. Any use of trade, product, or firm names in this publication is for descriptive purposes only and does not imply endorsement by the U.S. Government. Any links to non-Government web sites are provided for convenience only and do not imply endorsement by the U.S. Government. Introduction History Papers Issues Help Input Files Output Files Download Source