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Summary_GWM-VI.txt
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Summary_GWM-VI.txt
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SUMMARY OF GWM-VI
NOTE: Any use of trade, product, or firm names is for descriptive purposes only
and does not imply endorsement by the U.S. Government.
ABSTRACT
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 two significant ways—-(1) it can be used with any version of
MODFLOW that meets certain requirements on input and output, and (2) it is
structured to allow parallel processing of the repeated runs of the MODFLOW
model that are required to solve the optimization problem. GWM–VI uses the same
input structure for files that describe the management problem as that used by
prior versions of Groundwater Management. GWM–VI requires only minor changes to
the input files used by the MODFLOW model. GWM–VI uses the Joint Universal
Parameter IdenTification and Evaluation of Reliability Application Programming
Interface (JUPITER-API) to implement both version independence and parallel
processing. GWM–VI communicates with the MODFLOW model by manipulating certain
input files and interpreting results from the MODFLOW listing file and binary
output files. Nearly all capabilities of prior versions of Groundwater
Management are available in GWM–VI. GWM–VI has been tested with MODFLOW-2005,
MODFLOW-NWT (a Newton formulation for MODFLOW-2005), MF2005-FMP2 (the Farm
Process for MODFLOW-2005), SEAWAT, and CFP (Conduit Flow Process for
MODFLOW-2005). Banta and Ahlfeld (2013) provide sample problems that
demonstrate a range of applications of GWM–VI and the directory structure and
input information required to use the parallel-processing capability.
HISTORY
Please refer to file release.txt for the version history for GWM-VI.
SYSTEM REQUIREMENTS
The programs that make up GWM-VI are written in the Fortran 90 programming
language. The GWM-VI distribution file includes executable files that can be
used on personal computers running various forms of the Microsoft Windows
operating system. See the file readme.txt for instructions for compiling the
programs for use on computers that run other operating systems.
DOCUMENTATION
Banta, E.R., and Ahlfeld, D.P., 2013, GWM–VI—-Groundwater management with
parallel processing for multiple MODFLOW versions: U.S. Geological Survey
Techniques and Methods, book 6, chap. A48, 33 p.,
http://pubs.usgs.gov/tm/6a48/.
CONTACTS
Edward R. Banta
U.S. Geological Survey
Colorado Water Science Center
Mail Stop 415
Denver Federal Center
Lakewood, CO 80225
David P. Ahlfeld
Dept. of Civil and Environmental Engineering
University of Massachusetts, Amherst, MA 01003