GMS:MF6 PEST Observation Package

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MODFLOW 6
Models & Tools
GWF Model
GWT Model
Cell Properties Dialog
Zone File
Packages
Flow: GNC, HFB, NPF
GWF: BUY, CHD, CSUB,
DRN, EVT, GHB,
LAK, MAW, MVR,
OBS, RCH,RIV,
SFR, STO, UZF,
WEL
GWT: ADV, CNC, DSP
FMI, IC, IST, LKT,
MDT, MST, MVT,
MWT, OBS, SFT,
SRC,SSM, UZT
Other DIS, DISU, DISV,
IMS, OC, TDIS,
PEST

The MDOFLOW 6 PEST Observations dialog

MODFLOW 6 includes an observation utility (OBS) which is used to output the computed head, drawdown, and/or flow at specific cells at all output times.

GMS includes additional observation features beyond what comes with MODFLOW 6, including observations at arbitrary locations and times, comparison of observed and computed values, whisker plots, and other plots. This functionality is done with the help of utility programs that come with PEST, and is very similar to the observation functionality GMS provides for MODFLOW-USG. GMS prepares the input files needed by the PEST utilities to determine the computed values from the model solution.

PEST can be used for observations and calibration with a MODFLOW 6 simulation.

MODFLOW 6 PEST Observations Dialog

The MODFLOW 6 PEST Observations dialog is accessed by double-clicking on the PEST Observations package under a MODFLOW 6 simulation in the Project Explorer. It contains the following sections and options:

  • Generate PEST Observation Data – This button opens the Generate Observations dialog.
  • Delete All – Removes all observation data in the dialog.
  • Files
  • Errors

Related Topics