Model:MODFLOW

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

MODFLOW

Also known as
Model type	Modular
Model part of larger framework
Note on status model
Date note status model

basins,

Supported platforms	Unix, Linux, Mac OS, Windows
Other platform
Programming language	Fortran77, Fortran90, C
Other program language
Code optimized	Single Processor, Multiple Processors
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	--

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

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	--

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	--

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.

This part will be filled out by CSDMS staff

OpenMI compliant	No but possible
BMI compliant	No but possible
WMT component	Not yet"Not yet" is not in the list (Yes, In progress, No but possible, No not possible) of allowed values for the "Code CMT compliant or not" property.
PyMT component
Is this a data component

Model info

Authors

Paul Barlow

Harbaugh, Banta, Hill, Winston

Source code

Model citations

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