• Large difference in "External Inflow" and "External Outfall" - SewerGEMS

    Hello, after the calculating the sanitary sewage system with Explicit (SWMM Solvers) solver in SewerGEMS, I received the "External Inflow (ML)": 472 and "External Outfall (ML)": 549. What could be the reason for such large differences in the values…
  • SewerGems - Pressure pipe friction loss very wrong

    I'm working with an odd pipe configuration (an inverted siphon which discharges into a basin, controlled by an overflow weir). Elsewhere in my model, I have some channels that I'd like to calculate at a high resolution (0.2 feet, ideally, but I can…
  • Stop Control Structure Adjacent to Outfall

    I have a system I am modeling in SewerGEMS and have run across the following error: 20448 "Base" "Conduit" "29" "CO-1" (N/A) "Conduit has a Stop control structure, but this is not supported next to the connected outfall element." It appears the software…
  • Modeling Sewer Outfall Diffusers

    Hello, I'm wondering if it is possible with SewerGEMS or WaterGEMS to model a WWTP outfall and diffusers? It consists of a 90 m long outfall pipe, with a diffuser header and nozzles. The diffuser header decreases length over the its length and there…
  • Outfall and Pond Setup Sewergems

    Hi, I am busy modelling a basic storm water management system. Consisting of 3 catchment areas, open channels, conduits with manholes terminating in an outfall into a pond. I am experiencing large differences performance of my network should…