GWF-IC
Structure of Blocks
FOR EACH SIMULATION
BEGIN GRIDDATA
STRT [LAYERED]
<strt(nodes)> -- READARRAY
END GRIDDATA
Explanation of Variables
Block: GRIDDATA
strt
is the initial (starting) head—that is, head at the beginning of the GWF Model simulation. STRT must be specified for all simulations, including steady-state simulations. One value is read for every model cell. For simulations in which the first stress period is steady state, the values used for STRT generally do not affect the simulation (exceptions may occur if cells go dry and (or) rewet). The execution time, however, will be less if STRT includes hydraulic heads that are close to the steady-state solution. A head value lower than the cell bottom can be provided if a cell should start as dry.
Example Input File
#The OPTIONS block is optional
BEGIN OPTIONS
END OPTIONS
#The GRIDDATA block is required
BEGIN GRIDDATA
STRT LAYERED
CONSTANT 0.0 Initial Head layer 1
CONSTANT 0.0 Initial Head layer 2
END GRIDDATA