### GWE-FMI

#### Structure of Blocks

_FOR EACH SIMULATION_

```
    BEGIN OPTIONS
      [SAVE_FLOWS]
      [FLOW_IMBALANCE_CORRECTION]
    END OPTIONS
```
```
    BEGIN PACKAGEDATA
      [<flowtype> FILEIN <fname>
      <flowtype> FILEIN <fname>
      ...]
    END PACKAGEDATA
```

#### Explanation of Variables

##### Block: OPTIONS

  * `SAVE_FLOWS` keyword to indicate that FMI flow terms will be written to the file specified with "BUDGET FILEOUT" in Output Control.

  * `FLOW_IMBALANCE_CORRECTION` correct for an imbalance in flows by assuming that any residual flow error comes in or leaves at the temperature of the cell.  When this option is activated, the GWE Model budget written to the listing file will contain two additional entries: FLOW-ERROR and FLOW-CORRECTION.  These two entries will be equal but opposite in sign.  The FLOW-CORRECTION term is a mass flow that is added to offset the error caused by an imprecise flow balance.  If these terms are not relatively small, the flow model should be rerun with stricter convergence tolerances.

##### Block: PACKAGEDATA

  * `flowtype` is the word GWFBUDGET, GWFHEAD, GWFGRID, GWFMOVER or the name of an advanced GWF stress package from a previous model run.  If GWFBUDGET is specified, then the corresponding file must be a budget file.  If GWFHEAD is specified, the file must be a head file.  If GWFGRID is specified, the file must be a binary grid file. If GWFMOVER is specified, the file must be a mover file.  If an advanced GWF stress package name appears then the corresponding file must be the budget file saved by a LAK, SFR, MAW or UZF Package.

  * `FILEIN` keyword to specify that an input filename is expected next.

  * `fname` is the name of the file containing flows.  The path to the file should be included if the file is not located in the folder where the program was run.

#### Example Input File
```
    BEGIN OPTIONS
      FLOW_IMBALANCE_CORRECTION
    END OPTIONS
    
    BEGIN PACKAGEDATA
      GWFBUDGET FILEIN ../flow/mygwfmodel.bud
      GWFHEAD FILEIN     ../flow/mygwfmodel.hds
      GWFMOVER FILEIN    ../flow/mygwfmodel.hds
      LAK-1 FILEIN       ../flow/mygwfmodel.lak.bud
      SFR-1 FILEIN       ../flow/mygwfmodel.sfr.bud
      MAW-1 FILEIN       ../flow/mygwfmodel.maw.bud
      UZF-1 FILEIN       ../flow/mygwfmodel.uzf.bud
      LAK-2 FILEIN       ../flow/mygwfmodel-2.lak.bud
    END PACKAGEDATA
```