USGS Series | Open-File Report |
---|---|
Report Number | 2000-92 |
Title | MODFLOW-2000, The U.S. Geological Survey Modular Ground-Water Model - User Guide to Modularization Concepts and the Ground-Water Flow Process |
Edition | - |
Language | ENGLISH |
Author(s) | Harbaugh, Arlen W.; Banta, Edward R.; Hill, Mary C.; McDonald, Michael G. |
Year | 2000 |
Originating office | Geological Survey (U.S.) |
USGS Library Call Number | (200) R29o no.2000-92 |
Physical description | viii, 121 p. |
ISBN |
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MODFLOW is a computer program that numerically solves the three-dimensional ground-water flow equation for a porous medium by using a finite-difference method. Although MODFLOW was designed to be easily enhanced, the design was oriented toward additions to the ground-water flow equation. Frequently there is a need to solve additional equations; for example, transport equations and equations for estimating parameter values that produce the closest match between model-calculated heads and flows and measured values. This report documents a new version of MODFLOW, called MODFLOW-2000, which is designed to accommodate the solution of equations in addition to the ground-water flow equation. This report is a user?s manual. It contains an overview of the old and added design concepts, documents one new package, and contains input instructions for using the model to solve the ground-water flow equation.