• Percent Connected Impervious Areas and Percent Unconnected Impervious Areas

    Hi, I am getting the same error that i found with the question asked regarding the percent connected impervious. I have read through the other question and answer and I think it did answer my question, however if we do have it shown like i have below…
  • Composite outlet structure for Ponds

    When doing a new composite outlet structure with orfice and weir, does the rating table information need to be something that is put in prior to running the model? or is the rating table and curve table populated after running the model? I am updating…
  • How does "constant flow" for pond seepage method?

    Hi, I was wondering if I did the "constant flow" method does the pond need to be using Elevation-Area or one of the other options under the volume type that are available? Also i am aware that the solver should be implicit or the GVF-Rational (StormCAD…
  • How to discard water quality volume to an arbitrary outfall?

    Hi, I have a model in which a pond goes to an outlet structure to go directly to our storm system. However, we want to discard the water quality volume from that same pond to go to arbitrary outfall so it does not affect downstream of our system. I…
  • Can we use sewerGEMs for storm water modelling?

    hello My name is Toufik Maner. I am going to work on" Storm Water Modelling" project using SewerGEMS and I am new to this software. Could somebody please tell me whether I can use SewerGEMS Software to model storm water system having natural streams…
  • SWMM output File units

    I couldn't solve the specific units required for the SWMM output summary. I read all your posts,still couldn't figure it out. Th swim output file comes as CFS units. Kindly arrange a tutorial for it.For information, I m using the latest version of Bentley…
  • SewerGems - Sag Inlet Modeling

    Hello, I am working on a project using SewerGems, as required by the client. We are semi-new to the software, but have a model built and looking for some guidance on how to efficiently model sag inlets. We currently have the subcatchment routed to a…
  • Is there a "summary page" similar to the old PondPack that can be printed from CivilStorm?

    I am just starting out with CivilStorm for Stormwater Management Design (land development) and even though it is a very powerful program, getting the information in a standard report suitable for submitting to reviewing agencies is something that I cannot…
  • Signs of Instability and Reliability of model Results (Explicit Solver) from the look of HGL/EGL in profiles

    Dears, A topic for discussion which was once raised but didn't seem to have concluded except for reference to use the most recent release of the software which may or may not be related to the causes... anyhow, the difference in this post is that we…
  • SewerGems Hydraulic grade line in profile is not correct, also drastic change in HGL peak level along same segment.

    Hi All, I am using SewerGems (connect edition), I believe most users of the software might have encountered this issue. While working and checking the network profiles it is observed that, HGL (water level) shows drastic level change. In principle…
  • SWMM 5.1 Results differ from Sewergems SWMM Calculation Results

    I am getting a -21.0% Flow Continuity Error in my Sewergems model so I exported it and ran it in the SWMM 5.1 software and got a -0.16% Flow Routing Continuity Error. I'm wondering what could cause such a drastic change in results. A few notes.…
  • Viewing the SWMM Report Results with he Civil Storm Flex table and other querying tools

    Hi All, So we run the model using the SWMM Explicit engine in Civil Storm (CONNECT) and we can see the SWMM Calculation summary in the text format but yet we want to be able to query those node specific results to identify on the map those nodes with…
  • RE: Force main with SewerGems using SWMM engine

    Marie-Joelle, What you've done to model with the force main and the inverted siphon sounds similar to what I would have done and it seems like the good way to represent what you have in the system. You might want to take a look at this wiki, however…
  • RE: Weirs design problems

    I recommend setting the calculation option Active Numerical Solver to Explicit (SWMM Solvers). I don't see what you described when using that solver.
  • RE: Combined ( Sewer& Storm Network)

    Sayed, This wiki article : communities.bentley.com/.../11852.sewercad-gvf-convex-solver-vs-sewergemscivilstorm-implicit-and-explicit-dynamic-solvers-vs-stormcad-gvf-rational-solver will explain the differences between the different solvers that we offer…
  • RE: Sewergems exporting SWMM - can I export notes?

    Hello Laura, Please take a look at the following video workaround I posted and let me know if you have any questions. How to convert SewerGEMS element notes to EPA SWMM descriptions
  • RE: Sewergems exporting SWMM - can I export notes?

    What you are trying to do is not currently supported. I submitted the following enhancement requests on your behalf: #329427 - Export the SewerGEMS element attribute "Notes" to the "Description" field in EPA SWMM and vice versa #329545 - Retain…
  • SWMM Interface Files

    I'm currently running a rather large model that has somewhat extensive hydrology, and I was looking at the option of using the SWMM interface files (rain file, runoff file, RDII file) to save the hydrological results so I don't have to rerun them every…
  • Error message in SewerGEMs during validation

    I was validating my model in SewerGEMs and recieved the following message for each of the catchments in the model: "The EPA Runoff calculations failed for this catchment." The user's manual does not give any indication to the source of…
  • Re: Reporting in SewerGEMs with SWMM engine

    No, I do not believe there is a way to customize the data included in the SWMM text output file. However, you should in fact be able to also use the flextable and other tools in SewerGEMS such as element properties, graphs, profiles, etc, to see the results…