How do you design/model a storm sewer "bubbler" system

[civengr123]

How would one design/model a stormsewer "bubbler" system"? Typically a storm sewer system will discharge to grade with an endwall. Due topographic restrictions if an inlet has to be installed as the outfall how would you model it? Using Hydraflow Storm Sewers, the outfall can not be designated as an inlet, it is always a pipe discharging to grade.

 

[coloeng]

You should only post in one forum and this forum certainly isn't the correct one for this question.