MODFLOW-2000 GWT Data Requirements

Date requirements for visualizing MODFLOW-2000 GWT results are as follows:

If NPNTCL is Then set NPNTVL to
-2 -1
-1 1
0 0
greater than 0 1

 

Notes:

  1. If the simulated concentration at a cell is equal to CNOFLO, Model Viewer assumes that the cell is inactive and will not display it. Therefore, the common practice of setting CNOFLO to zero should be avoided if concentrations at active cells might also be zero. Another consideration is to avoid truncation error. For example, setting CNOFLO to 99.999 should be avoided because the output might not be written with adequate precision. Instead, it is recommended that CNOFLO be set to a large negative integer such as -1.0E10.
  2. Model Viewer reads unformatted files much more quickly than formatted files. Therefore, for a faster animation, the concentration file (and velocity and particle location files, if saved) should be unformatted.