Pre 2014 Blogs

How to subtract upstream flow to get NET catchment inflow for SWMM

Posted by Jason WANG on August 27, 2012 at 2:08am

Dear All,

I am trying to update an I&I report done by a consultancy using SWMM5 modelling.

The sewer flow gauged seems to be difficult to be used in SWMM model, because we only gauge flow data including upstream flows. In SWMM, we could only assign junctions with net ADWF for any subcatchments, I was trying to lag upstream and downstream flows and get net inflow from subtraction of two series of data. However, there is no proper lag time as sewer travel time changes with flow and my flow data for downstream have so many minus value.

If you have any suggestion on this NET inflow thing, please help.

how-to-subtract-upstream-flow-to-get-net-catchment, #swmm5

E-mail me when people leave their comments –

You need to be a member of SWMM 5 or SWMM or EPASWMM and SWMM5 in ICM_SWMM to add comments!

Join SWMM 5 or SWMM or EPASWMM and SWMM5 in ICM_SWMM

Comments

Robert Dickinson August 27, 2012 at 9:07am

Perhaps a moving average of the flow differences to iron out the negative flows? I will see if there are any recommendations in this matter for you.

This reply was deleted.

#xg { position:relative;top:120px; } #xn_bar { top:120px; }

Hello, you need to enable JavaScript to use SWMM 5 or SWMM or EPASWMM and SWMM5 in ICM_SWMM.

Please check your browser settings or contact your system administrator.