GMS:DE4 Package

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MODFLOW
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Packages
Flow: BCF6, HUF, LPF, UPW
Solvers:

DE4, GMG, NWT, PCG,

PCGN, LMG, SIP, SOR,

SMS
Other:

BAS6, BFH, CHD1, CLN,

DRN1, DRT1, EVT1, ETS1,

GAGE, GHB1, GNC, HFB1,

HUF, LAK3, MNW1, MNW2,

OUT1, RCH1, RIV1, SFR2,

STR1, SUB1, SWI2, WEL1,

UZF1
v • e

The DE4 package or Direct Solver is one of the solvers available for MODFLOW. It requires reading in a DE4 file.

For more information on this solver see page 84 of the USGS documentation at http://pubs.er.usgs.gov/usgspubs/ofr/.

The MODFLOW DE4 Solver package dialog.

DE4 File Format

FOR EACH SIMULATION
 0. [#Text]
Item 0 is optional—“#” must be in column 1. Item 0 can be repeated multiple times.
 1. ITMX MXUP MXLOW MXBW
 2. IFREQ MUTD4 ACCL HCLOSE IPRD4


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