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sewergems/stormcad composite q

Our local agency is requesting a composite q for runoff instead of a composite CN. Do Bentley products have this capability?

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  • Brian, our product managers will look into this and prioritize for a potential future release - this is recorded with reference # 538362 which I have attached to a new Service Request opened on your behalf, so that you will receive an email alert if this is implemented in a future release.

    In the meantime, the solution you can use is to model each land type as a separate catchment area, with its "Outflow Element" set to a single common discharge point (the same that you would have chosen for the single catchment). This will also enable you to align your model more closely to the real system (by drawing the catchment polygons for each type of land). 

    I have documented this in the following article in our Wiki: Using the Weighted Q method for catchment runoff


    Jesse Dringoli
    Technical Support Manager, OpenFlows
    Bentley Communities Site Administrator
    Bentley Systems, Inc.

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