I'm trying to setup my existing storm drainage system. My system
consists mostly of ditches with culverts going under roads etc. I place
the culverts in the GIS module as in the tutorial. However, upon closing
and reopening the GIS module, something happens to my file. It seems
that PCSWMM goes through and arbitrarily connects some of the nodes as
it thinks it should be. For the most part, it is connecting sequential
node numbers, but it doesn't connect all of them, just some of them. In
summary, when I reopen my GIS module, I have lines going everywhere that
I didn't draw. Thanks in advance for your suggestions.

Jeff Thompson
JThompson@HOBBSUPCHURCH.COM