This manual addresses the principles of ground-water flow modeling and the modeling options associated with MODFLOW and provides twenty problem sets that illustrate use of MODFLOW including principles, input/output, options, rules of thumb, and common modeling mistakes. For each problem, the manual presents a problem statement and setup, input data sets, model output, and a discussion of results. Examples include radial flow to a well, anisotropic conditions, artisan-water table conversion, steady-state simulations, grid and time-stepping considerations, transient calibration and prediction, representation of aquitards and leaky aquifers, solution techniques and convergence, head dependent (third-type) boundary conditions, cross-sectional simulations, application to a water supply problem, and application to a hazardous waste problem. All MODFLOW packages are utilized at least twice.

Includes manual and "ready-to-run" data sets on DOS disk. The MODFLOW program and documentation must be purchased separately.

Author: P.F. Andersen.