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try OL-133 or anything around there. The three you mentioned appear to be the only ones that are working correctly.

I agree that the offset of the street conduit should be 1.05 or the max depth of the junction 1.35, however, try deleting one of the overland flow routes, the HGL will come up for some reason and cause flooding at the node even though there was no flow over the street.

Here it is...http://files.engineering.com/getfile.aspx?folder=9c0c3f6b-417d-4c7a-ab25-511641e08df8&file=ThePondsMajor.INP

The parameters I am using are as follows Max Depth - 1.2m Surcharge depth - 0 as no surcharging will occure above the street Conduit Offsets for street - 1.2m And I am using dynamic wave. Still, prior to adding the second conduit the max depth observed is 1.2m plus flooding, then with no...

I have been worked with swmm5 on a couple of projects now and have been given a drainage plan to do for a subdivision with several ponds. The minor system has been modeled and sized with relative ease based on the 1 in 5 year event. Once the event is switched to the 1 in 100 year many of the...