William -

The main problem is that your tide file starts Jan 31, but your simulation started Jan 1 and ended before the start of the tide file. I shifted the simulation forward, and the model runs. I also set NEQUAL=1 to let the program lengthen the conduits for stability. I'd also recommend setting the junction inverts to the minimum invert of the connecting conduits. Odd things may happen if you just leave them at zero. You were also missing Y0 data from the end of the D1 lines. Take a look at the attached files (Rt33 your original; RT34 with my modifications). I did a few other things such as add random XY coordinates and strip out the comments (I recommend you add them back in though).

If you don't have a visual interface for your model, consider that your's is small enough to use the demo version of MikeSWMM. You can download the software from www.dhisoftware.com <http://www.dhisoftware.com>and view the result file I set it up to generate.

Regards,

Mitch Heineman, P.E. DEE
HeinemanM@CDM.COM