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===Stress Period=== ...he stress periods and view the different river properties for those stress periods in the spreadsheet below.

!style="text-align:left;"|2. Add stress periods to the [[GMS:MF6 TDIS Package|TDIS]] package. {{GMS MODFLOW 6 TDIS Stress Periods Workflow}}

There are two tools in the [[AHGW:AHGW|Arc Hydro Groundwater]] Stress Periods toolbox: "Add Absolute Time", and "Add SP Start and End". [[File:AHGW MODFLOW Analyst Stress Periods - Add Absolute Time.png|350px|thumb|right|''Add Absolute Time'' dialog]]

!style="text-align:left;"|3. Set stress periods for MT3DMS. ...ansport Package Dialog|''Basic Transport Package'']] dialog, select the '''Stress Period''' button.

...eated for the State of Colorado. The grid is 1 X 655 X 848 with 132 stress periods. The figure below shows the size of the original MODFLOW text files. When G ...f an area in South Carolina, USA. The grid is 3 X 617 X 884 with 36 stress periods.

...HGW:Stress Periods#Add Absolute Time|Add Absolute Time]]{{·}}[[AHGW:Stress Periods#Add SP Start and End|Add SP Start and End]]){{·}}[[AHGW:MODFLOW Tables|Tab

*''Stress period'' – Specifies which stress period is displayed in the table. ...s period. This option is unavailable for steady state models and the first stress period of transient models.

...les|imported]], but if the grid exceeds 5000 cells or the number of stress periods is more than 3 the project cannot be saved and a watermark is displayed in ...to one simulation and cannot be saved it there are more than three stress periods.

!style="text-align:left;"|3. Set stress periods for RT3D. ...ansport Package Dialog|''Basic Transport Package'']] dialog, select the '''Stress Period''' button.

**''Periods'' – Turn on to make the ''Periods'' section visible. This section is on by default. *''Periods'' section – Contains the following:

!style="text-align:left;"|2. Set stress periods for SEAM3D. ...ansport Package Dialog|''Basic Transport Package'']] dialog, select the '''Stress Period''' button.

===Stress Period=== ...ss periods and view the different general head properties for those stress periods in the spreadsheet below.

...cally defined by specifying a recharge value for each [[GMS:Stress Periods|stress period]] for each vertical column in the grid (i.e., a NLAY X NCOL array of ...ultiplier is a constant which can be written to the package file with each stress period array. Each value in the array is scaled by the multiplier as the ar

...o calculate the values for all stress periods ID's or specify a particular stress period.

''Damping for all, or if <0, only SS stress periods (DAMPPCG)'' ''Damping for transient stress periods (DAMPPCGT)''

...T) is typically defined by specifying values for each [[GMS:Stress Periods|stress period]] for each vertical column in the grid. The values consist of an ele ===Stress Periods===

**''Periods'' &ndash; Turn on to make the ''Periods'' section visible. ...Turn on to write the list of MVR flow rates to the listing file for every stress period time step in which "BUDGET PRINT" is specified in [[GMS:MF6 OC Packa

...ll tied to one parameter. Then use different instances in different stress periods in their MODFLOW model. For more information on parameter instances consult ...nce to be used in stress periods 1, 2, and 5 then your entry in the Stress Periods field should be "1 2 5".

...asic Transport Package'' includes the computational time intervals (stress periods), an array defining which cells are inactive and which cells have constant [[File:MT3D-StressPeriods.jpg|thumb|450 px|The MT3DMS ''Stress Periods'' dialog.]]

...GHB...) to bring up a spreadsheet to edit ''Use previous'' for all stress periods. ...eet to edit ''Use previous'' and multiplier of active array for all stress periods.