Once MODFLOW has successfully completed, Choose YES to post-process the results

Specify what model results to analyze (include a check next to “CBC Files” to allow viewing of the mass balance)

Be wary that the proper path and file names appear here

You can get to this screen to import any previously created results via Plot>ImportResults

Click OK

Check the model by reading through the GWV output,
drag all the ex5 ascii files from C:\temp\yourname\modflow\exer\gwvtut into textpad
the binary files will appear as gibberish and can simply be closed if you open them

LET US TAKE SOME TIME NOW TO EXPLORE EACH FILE CREATED BY GWV AND EVALUATE WHETHER THE MODEL IS WHAT WE INTENDED

if your model did not converge, check the mass balance (either in ex5.out, or by Plot>MassBalance>ModelSummary),
if it is not acceptable:

Select Model->MODFLOW->SolverPackage

Decrease the tolerance, possibly increase the number of iterations if almost all were used last time

Repeat creation of MODFLOW files and execution until convergence with reasonable mass balance is concerned

if you notice something incorrect, fix it, rerun and continue reviewing results
if you cannot figure out what is wrong, it may help to echo input to the output file

Select Model->MODFLOW->PrintFormats

Choose a print format for any parameter of relevance to your model (by default these are off, but if you are using my gwv file, they may be on)
Once these are checked, rerun and return to reveiwing your files

 

HEAD CONTOURS Should APPEAR whether they do, or not (in which case they are likely to after the following adjustment), you can adjust them by:

Select Plot>Contour>Parameters(plan) and adjust contours as desired

Mine look like this:



Toggle through the layers to see if heads change with depth

Plot velocity vectors on the map and cross-section by selecting
Plot->What to Display…
Check Vectors
Select Plot>VectorOptions to adjust the appearance of the vectors



Plot a color flood map by selecting
Plot->What to Display…
Check Color Flood of heads



Turn off the color flood and take a closer look at the cross section view

Drag the bar that separates the cross section from the plan view down

Select Plot>Contours>Parameters(Section)

Consider the calculated Z range (in this case heads)

Set the contour controls at reasonable values

To view along columns rather than rows Select XSect>Selection

To view the Mass Balance, Select Plot->Mass Balance->Model Summary

A table similar to the MODFLOW output summary appears

Click Graph to produce a bar chart of the mass balance

Flux rates are also displayed on the status bar based on cursor position

Switch to the BC mode

Switch to layer 1

Place the cursor over a river or ghb cell

A negative represents flow leaving the model

if you do not see this, you may need to stretch your window to make it wider
To view profiles of head, concentration, drawdown, or water flux plotted versus distance along a cross-section,

Select Plot-> Profile->Head

Double click on items such as axis labels to change to desired settings

Right click on the graph to print, export, or modify the chart.

Here is my profile for row 1
if you look closely even at this scale you can pick up the upward gradient on the left and the downward gradient on the right