Model:GSFLOW

GSFLOW

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

Incorporated models or components:	PRMS, MODFLOW,

Spatial dimensions	3D
Spatial extent	Watershed-Scale
Model domain	Hydrology, Terrestrial
One-line model description	Ground-water and Surface-water FLOW model
Extended model description	GSFLOW was a coupled model based on the integration of the U.S. Geological Survey Precipitation-Runoff Modeling System (PRMS, Leavesley and others, 1983) and the U.S. Geological Survey Modular Groundwater Flow Model(MODFLOW-2005, Harbaugh, 2005). It was developed to simulate coupled groundwater/surface-water flow in one or more watersheds by simultaneously simulating flow across the land surface, within subsurface saturated and unsaturated materials, and within streams and lakes.

Keywords:	Hydrological model, basin,

Name	Steve Markstrom
Type of contact	Model developer
Institute / Organization	USGS
Postal address 1	U.S.Geological Survey, Denver Federal Center
Postal address 2	Box 25046, MS 412
Town / City	Lakewood
Postal code	80225
State	Colorado
Country	United States
Email address	markstro@usgs.gov
Phone	(303)236-3330
Fax	(303)236-5034

Supported platforms	Linux, Windows
Other platform
Programming language	Fortran90, C
Other program language
Code optimized	Single Processor
Multiple processors implemented
Nr of distributed processors
Nr of shared processors
Start year development	2008
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/gsflow/gsflow.html
Source csdms web address
Program license type	Other
Program license type other
Memory requirements
Typical run time

Describe input parameters	PRMS: http://wwwbrr.cr.usgs.gov/projects/SW_MoWS/software/oui_and_mms_s/prms.shtml MODFLOW http://water.usgs.gov/nrp/gwsoftware/modflow2005/modflow2005.html
Input format
Other input format
Describe output parameters	PRMS: http://wwwbrr.cr.usgs.gov/projects/SW_MoWS/software/oui_and_mms_s/prms.shtml MODFLOW http://water.usgs.gov/nrp/gwsoftware/modflow2005/modflow2005.html
Output format
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	GSFLOW simulates flow within and among three regions. The first region is bounded on top by the plant canopy and on the bottom by the lower limit of the soil zone; the second region consists of all streams and lakes; and the third region is the subsurface zone beneath the soil zone. PRMS is used to simulate hydrologic responses in the first region and MODFLOW-2005 is used to simulate hydrologic processes in the second and third regions.
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
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?	No
Upload manual if available:
Model website if any	http://water.usgs.gov/nrp/gwsoftware/gsflow/gsflow.html
Model forum / discussion board

Comments

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Model info

Authors

Steve Markstrom

Source code

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Featured reference(s)	Open Access Status	Year	Type of Reference	Cited
Markstrom, Steven L.; Niswonger, Richard G.; Regan, R. Steven; Prudic, David E.; Barlow, Paul M.; 2005. GSFLOW-Coupled Ground-water and Surface-water FLOW model based on the integration of the Precipitation-Runoff Modeling System (PRMS) and the Modular Ground-Water Flow Model (MODFLOW-2005). , 240. [1]	unknown	2005	a module overview describing a module	429