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Techniques and Methods 6–A48

Groundwater Resources Program

GWM–VI—Groundwater Management with Parallel Processing for Multiple MODFLOW Versions

By Edward R. Banta and David P. Ahlfeld

Thumbnail of and link to report PDF (1.55 MB)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). This report provides 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.

First posted December 5, 2013

For additional information contact:
Director, Colorado Water Science Center
U.S. Geological Survey
Box 25046, Mail Stop 415
Denver, CO 80225
http://co.water.usgs.gov

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Suggested citation:

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://dx.doi.org/10.3133/tm6a48.

ISSN 2328-7055 (online)



Contents

Abstract

Introduction

Overview of the GWM–VI Suite of Programs

GWM–VI

MMProc

JRunnerM

MODFLOW Input and Output Requirements

Using GWM–VI

Acknowledgments

References Cited

Appendix 1: Example of Use of GWM–VI with the Dewater Problem

Appendix 2: Programmers’ Guide to GWM–VI



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