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Modflow - A Three-Dimensional Finite-Difference
Ground-Water Flow Model
Michael G. McDonald and Arlen W. Harbaugh
Modflow is the most popular ground-water flow model in the world. This USGS TWRI, Modflow - A Three-Dimensional Finite-Difference
Ground-Water Flow Model, includes detailed explanations of the physical and mathematical concepts on which the Modflow model is based and an explanation of how those concepts are incorporated into the modular
structure of the Modflow computer program. Ground-water flow within the aquifer is simulated using a block-centered finite-difference approach. Layers in Modflow can be simulated as confined, unconfined, or a
combination of confined and unconfined. Flow associated with external stresses such as wells, areal recharge, evapotranspiration, drains, and streams, can also be simulated in Modflow. The finite-difference
equations in Modflow can be solved using either the Strongly Implicit Procedure or Slice-Successive Overrelaxation. 530 pages
Prices: (Prices include shipping.)
U.S. & Canada - $ 39
Modflow - Multiple Copies for Classroom Use - $ 30
International - $ 70
Modflow - Multiple Copies for Classroom Use - $ 60
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