Constant Flow analysis in Storm and Sanitary Sewer Analysis?

[debgallery]

Is there a way to analyze a simple storm system for a user defined peak flow in Autodesk's Storm and Sanitary Analysis? If not what program (preferably free) would you use? I used to use Bently's stormcad for these quick calcs but we decided to drop the license.

Thanks

 

[pinkpig]

SWMM is ideal

 

[beej67]

http://www.fhwa.dot.gov/engineering/hydraulics/software.cfm

Hydrology, Drainage Analysis, Flood Studies, and Complex Stormwater Litigation for Atlanta and the South East -

http://www.campbellcivil.com

 

[jasonpc]

Autodesk SSA is built on SWMM5 and has a very similar interface. To enter a user defined flow you must click on a node and then click on the button next to external inflows. You would then enter a baseline inflow of how ever many cfs inflow you want. This is same area you would enter sanitary sewer information for a model (infiltration modeling and time pattern flows).