MODFLOW: An insight of thirty years development of a standard numerical code for groundwater simulations

Loudyi, D., Falconer, Roger Alexander ORCID: https://orcid.org/0000-0001-5960-2864 and Lin, Binliang ORCID: https://orcid.org/0000-0001-8622-5822 2014. MODFLOW: An insight of thirty years development of a standard numerical code for groundwater simulations. Presented at: 11th Annual Conference on Hydroinformatics, New York, NY, 17-21 August 2014. Proceedings of 11th International Conference on Hydroinformatics. R17 New York, NY: City University of New York (CUNY),

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Abstract

Of all the groundwater flow models widely available, the U.S. Geological Survey threedimensional modular finite-difference, groundwater flow model, MODFLOW, is regarded by many as the most widely used by government agencies and consultancy firms. The model was first developed in 1984 and since then many changes, updates and corrections have been introduced to the program, simultaneously with its growing use. Since its establishment as a world-wide standard for groundwater flow modeling, many programs have been developed to link MODFLOW to other codes that use groundwater flow information in porous saturated media. Processes such as solute transport, variable density flow, multiphase and unsaturated flow, integrated surface water and groundwater flow, parameter estimation, groundwater management and optimization etc., may all be modeled using programs that solve a system combining the process governing equations with the groundwater flow equation, solved by MODFLOW. In this study, a summary of the development of the different versions of MODFLOW, and their specific features and references, is given. The development of the code design, usability regarding data input and output, pre- and post-processing facilities, capabilities, maintenance and a range of applications are presented. The code limitations related to the conceptual model, the mathematical solutions, hardware and software requirements are discussed, along with suggestions for improving the model accuracy and potential future developments of the code.

Item Type:	Conference or Workshop Item (Paper)
Date Type:	Submission
Status:	Published
Schools:	Schools > Engineering
Subjects:	T Technology > TA Engineering (General). Civil engineering (General)
Publisher:	City University of New York (CUNY)
Last Modified:	14 Aug 2024 09:15
URI:	https://orca.cardiff.ac.uk/id/eprint/67758

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