Harbaugh, A.W., 2005, MODFLOW-2005, the U.S. Geological Survey modular ground-water model -- the Ground-Water Flow Process: U.S. Geological Survey Techniques and Methods 6-A16, variously p.
Leake, S.A., and Galloway, D.L., 2007, MODFLOW ground-water model --
User guide to the Subsidence and Aquifer-System Compaction Package
(SUB-WT) for Water-Table Aquifers: U.S. Geological Survey Techniques
and Methods, Book 6, Chap. A23, 42 p.
Wilson, J.D. and Naff, R.L., 2004, The U.S. Geological
Survey modular ground-water model -- GMG linear equation solver package
documentation: U.S. Geological Survey Open-File Report 2004-1261, 47 p.
Halford, K.J. and Hanson, R.T., 2002, User guide for the drawdown- limited, multi-node well (MNW) package for the U.S. Geological Survey's modular three-dimensional finite-difference ground-water flow model, versions MODFLOW-96 and MODFLOW-2000: U.S. Geological Survey Open-File Report 02-293, 33 p.
Anderman, E.R., and Hill, M.C., 2000, MODFLOW-2000, the U.S. Geological Survey modular ground-water model -- Documentation of the Hydrogeologic-Unit Flow (HUF) Package: U.S. Geological Survey Open-File Report 00-342, 89 p.
Anderman, E.R., Kipp, K.L., Hill, M.C., Valstar, Johan, and
Neupauer, R.M., 2002, MODFLOW-2000, the U.S. Geological Survey modular
ground-water model -- Documentation of the Model-Layer
Variable-Direction Horizontal Anisotropy (LVDA) capability of the
Hydrogeologic-Unit Flow (HUF) Package: U.S. Geological Survey Open-File
Report 02-409, 60 p.
Anderman, E.R., and Hill, M.C., 2003, MODFLOW-2000, the U.S.
Geological Survey modular ground-water model -- Three additions to the
Hydrogeologic-Unit Flow (HUF) Package: Alternative storage for the
uppermost active cells, Flows in hydrogeologic units, and the
Hydraulic-coductivity depth-dependence (KDEP) capability: U.S.
Geological Survey Open-File Report 03-347, 36 p.
Banta, E.R., 2000, MODFLOW-2000, the U.S. Geological
Survey modular ground-water model -- Documentation of packages for
simulating evapotranspiration with a segmented function (ETS1) and
drains with return flow (DRT1): U.S. Geological Survey Open-File Report
00-466, 127 p.
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