A set of selected cells can be specified as wells using the Point Sources/Sinks command in the MODFLOW menu or by using the conceptual model in the Map module. Wells are specified by assigning a pumping rate to a selected cell at the location of each well. Wells can be either injection wells (positive flow rate) or extraction (negative flow rate) wells.
Once a set of cells has been specified, the Well Package dialog can be used to view and edit the values assigned to the cells.
The stress period field shows the current stress period and allows you to cycle through the stress periods and view the different river properties for those stress periods in the spreadsheet below.
Use this option on a stress period to use the river values from the previous stress period for the current stress period. This option is unavailable for steady state models and the first stress period of transient models.
For cells where river type boundary conditions have been assigned, the stage, conductance, and bottom elevation assigned to each cell are displayed in the spreadsheet portion at the lower part of the dialog. The spreadsheet can be used to edit the well name, row, column, layer, and flow values.
For a transient simulation, the values displayed in the spreadsheet are for an individual stress period. The values associated with other stress periods can be edited by entering the number of the desired stress period in the stress period edit box in the center of the dialog. If the Use previous option is selected for a given stress period, the values from the previous stress period are used and the spreadsheet is dimmed.
This button restores all values in the dialog to their default values
Related Links:
Packages Supported by GMS
Building a MODFLOW Model