Flow
is upward near the river and downward near the well.
Upward flow near the river makes sense because the river is the regional discharge
feature.
A zone
budget from ex4b reveals that there is only a little over 0.85 cms flowing
to layer 2 under natural conditions, thus the downward flow to layer 2, near
the pumping well, when 1 CMS is pumped from layer 2.