my_model.dis

# DIS package for  MODFLOW-2005, generated by Flopy.
         1        10        10         1         4         2
  0
CONSTANT    1.000000E+01                           #delr                          
CONSTANT    1.000000E+01                           #delc                          
CONSTANT    0.000000E+00                           #model_top                     
CONSTANT   -5.000000E+01                           #botm layer 1                  
      1.000000             1  1.000000  SS