sewergems/stormcad composite q

Hi Brian,

Is this "composite q" based on runoffs from different sub-areas of a catchment? However, it is not possible to get individual runoffs from sub-areas, unless you model each sub-area as an independent catchment with its own CN value.

Is this what you are looking for?

Just wondering if stormcad/sewer gems can do a weighted q yet? As previously posted our agency requires separate runoffs for each curve number to be added together in a catchment. We are no to use a composite curve number for a catchment.

Could you provide details on what you are looking for? With further information on what this is, we can either see if there is a way to do this or be able to log a request to include this.

Regards,

Scott

Could you provide details on what you are looking for? With further information on what this is, we can either see if there is a way to do this or be able to log a request to include this.

Regards,

Scott

• Calculate separate runoff for each CN value in each catchment.  Instead of using a single composite CN value for each catchment, the runoff is calculated separately for each sub-area and then the volumes are combined.  Sometimes referred to as a "weighted-Q" approach, this procedure preserves the full runoff volume from sub-areas with high CN values.