• Percent Connected Impervious Areas and Percent Unconnected Impervious Areas

    Paola Espinoza-Youn
    Paola Espinoza-Youn
    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…
    • 6 months ago
    • OpenFlows | Water Infrastructure
    • OpenFlows | Water Infrastructure Forum
  • Composite outlet structure for Ponds

    Paola Espinoza-Youn
    Paola Espinoza-Youn
    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…
    • 6 months ago
    • OpenFlows | Water Infrastructure
    • OpenFlows | Water Infrastructure Forum
  • How does "constant flow" for pond seepage method?

    Paola Espinoza-Youn
    Paola Espinoza-Youn
    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…
    • 6 months ago
    • OpenFlows | Water Infrastructure
    • OpenFlows | Water Infrastructure Forum
  • What are the limitations of importing/exporting SWMM5 files?

    Scott Kampa
    Scott Kampa
    Product(s): CivilStorm, SewerGEMS Version(s): CONNECT Edition, V8i Area: Layout and Data Input Introduction This article explains the limitations you need to be aware of when importing or exporting EPA SWMM5 INP format…
    • 6 months ago
    • OpenFlows | Water Infrastructure
    • OpenFlows | Water Infrastructure Wiki
  • How to discard water quality volume to an arbitrary outfall?

    Paola Espinoza-Youn
    Paola Espinoza-Youn
    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…
    • 6 months ago
    • OpenFlows | Water Infrastructure
    • OpenFlows | Water Infrastructure Forum
  • Can we use sewerGEMs for storm water modelling?

    TOUFIK MANER
    TOUFIK MANER
    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…
    • 11 months ago
    • OpenFlows | Water Infrastructure
    • OpenFlows | Water Infrastructure Forum
  • Slow performance when using SWMM solver with a large number of inlets

    Jesse Dringoli
    Jesse Dringoli
    Product(s): SewerGEMS, CivilStorm Version(s): 10.03.04.53 Area: Calculations Problem My model takes an excessively long time to compute when using the Explicit (SWMM) solver with a large number of catalog inlets. Solution…
    • over 1 year ago
    • OpenFlows | Water Infrastructure
    • OpenFlows | Water Infrastructure Wiki
  • What is the difference between the Slot and Extran option for the Surcharge Method SWMM calculation option?

    Jesse Dringoli
    Jesse Dringoli
    Product(s): SewerGEMS, CivilStorm Version(s): CONNECT Edition, V8i Area: Layout and Data Input Problem What is the difference between the available options for the Surcharge Method calculation option when using the Explicit…
    • over 1 year ago
    • OpenFlows | Water Infrastructure
    • OpenFlows | Water Infrastructure Wiki
  • "Access violation in module execRouting" when computing with SWMM solver

    Jesse Dringoli
    Jesse Dringoli
    Product(s): SewerGEMS, CivilStorm Version(s): 10.03.04.53 Area: Calculations Problem When attempting to compute a model with the Explicit (SWMM) solver in SewerGEMS or CivilStorm, the calculation fails and the following User…
    • 6 months ago
    • OpenFlows | Water Infrastructure
    • OpenFlows | Water Infrastructure Wiki
  • SewerGems - Sag Inlet Modeling

    Mike Ferrie
    Mike Ferrie
    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…
    • Answered
    • over 2 years ago
    • OpenFlows | Water Infrastructure
    • OpenFlows | Water Infrastructure Forum
  • User notification when computing: IDF data is not supported by SWMM. Storm event is excluded from export.

    Sushma Choure
    Sushma Choure
    Applies To Product(s): CivilStorm, SewerGEMS Version(s): 08.11.xx.xx Area: Modeling Original Author: Scott Kampa, Bentley Technical Support Group Problem When trying to compute a model, the…
    • over 2 years ago
    • OpenFlows | Water Infrastructure
    • OpenFlows | Water Infrastructure Wiki
  • How to run FLOOD using inflow Hydrographs from Catchments modeled in CivilStorm/SewerGEMS

    Douglas Miranda
    Douglas Miranda
    Product(s): OpenFlows FLOOD; CivilStorm and SewerGEMS Version(s): 10.03.00.01 (FLOOD) - 10.xx.xx.xx (CivilStorm /SewerGEMS) Area: Modeling Background When it´s necessary couple a 1D model from CivilStorm or SewerGEMS…
    • over 3 years ago
    • OpenFlows | Water Infrastructure
    • OpenFlows | Water Infrastructure Wiki
  • Software crashes for SWMM solver – with catchment set to Time Area runoff method

    Sushma Choure
    Sushma Choure
    Product(s): SewerGEMS, CivilStorm Version(s): 08.11.XX.XX, 10.XX.XX.XX Area: Layout and Data Input Problem With SWMM solver and catchment method set to Time-Area software crashes while computing with following error. …
    • over 3 years ago
    • OpenFlows | Water Infrastructure
    • OpenFlows | Water Infrastructure Wiki
  • Blocky stepwise pattern is displayed instead of a continous smooth pattern that was entered when using the SWMM engine

    wiki.author
    wiki.author
    Applies To Product(s): SewerGEMS, CivilStorm Version(s): V8i, CONNECT Edition Area: Modeling Original Author: Mark Pachlhofer, Bentley Technical Support Group Problem I'm getting a blocky stepwise…
    • over 2 years ago
    • OpenFlows | Water Infrastructure
    • OpenFlows | Water Infrastructure Wiki
  • Utilizing more than one CPU/core in model calculation (multi-threading)

    Jesse Dringoli
    Jesse Dringoli
    Applies To Product(s): HAMMER, WaterGEMS, WaterCAD, SewerGEMS, SewerCAD, StormCAD, CivilStorm, PondPack Version(s): CONNECT Edition, V8i Area: Modeling Original Author: Scott Kampa, Bentley Technical Support…
    • 15 days ago
    • OpenFlows | Water Infrastructure
    • OpenFlows | Water Infrastructure Wiki
  • SewerGems Hydraulic grade line in profile is not correct, also drastic change in HGL peak level along same segment.

    Mukesh vhirodkar
    Mukesh vhirodkar
    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…
    • Answered
    • over 4 years ago
    • OpenFlows | Water Infrastructure
    • OpenFlows | Water Infrastructure Forum
  • Catchment geometry lost when importing model prepared in InfoSWMM

    Yashodhan Joshi
    Yashodhan Joshi
    Product(s): SewerGEMS, CivilStorm Version(s): 10.XX.XX.XX, 08.11.XX.XX Area: Other Problem When importing a model prepared in InfoSWMM catchments lose their defined shape (geometry) in SewerGEMS or CivilStorm. Background…
    • over 5 years ago
    • OpenFlows | Water Infrastructure
    • OpenFlows | Water Infrastructure Wiki
  • SWMM 5.1 Results differ from Sewergems SWMM Calculation Results

    Jared Sandberg
    Jared Sandberg
    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.…
    • Answered
    • over 5 years ago
    • OpenFlows | Water Infrastructure
    • OpenFlows | Water Infrastructure Forum
  • ERROR 119: invalid cross section for Link <link_name> while using the SWMM engine

    Jesse Dringoli
    Jesse Dringoli
    Product(s): SewerGEMS, CivilStorm Version(s): 10.XX.XX.XX, 08.11.XX.XX Area: Layout and Data Input Problem I am getting ERROR 119: invalid cross section for Link <link_name> while using the Explicit (SWMM) solver. Why is…
    • over 5 years ago
    • OpenFlows | Water Infrastructure
    • OpenFlows | Water Infrastructure Wiki
  • ERROR 171: has invalid or out of sequence data while using the SWMM engine

    Larry Abla
    Larry Abla
    Product(s): SewerGEMS, CivilStorm Version(s): 10.XX.XX.XX, 08.11.XX.XX Area: Layout and Data Input Problem I am getting ERROR 171: <Pump/Channel Curve Name> has invalid or out of sequence data while using the SWMM…
    • 2 months ago
    • OpenFlows | Water Infrastructure
    • OpenFlows | Water Infrastructure Wiki
  • Modeling stormwater gate valve open and closure controls

    Jesse Dringoli
    Jesse Dringoli
    Product(s): SewerGEMS, CivilStorm Version(s): V8i, CONNECT Edition Area: Modeling Problem How do I model a gate valve opening and closing based on a logic such as pressure at a pressure transducer (water level in…
    • over 3 years ago
    • OpenFlows | Water Infrastructure
    • OpenFlows | Water Infrastructure Wiki
  • Modeling treatment for pollutants at nodes or ponds in SewerGEMS and CivilStorm

    Jesse Dringoli
    Jesse Dringoli
    Applies To Product(s): CivilStorm, SewerGEMS Version: CONNECT Edition, V8i Area: Layout and Data Input Problem What is the workflow to model treatment for pollutants in nodes and ponds using the Explicit…
    • 9 months ago
    • OpenFlows | Water Infrastructure
    • OpenFlows | Water Infrastructure Wiki
  • Overflow reported at catchbasin even though HGL below rim elevation

    Jesse Dringoli
    Jesse Dringoli
    Product(s): SewerGEMS, CivilStorm Version(s): V8i, CONNECT Edition Area: Output and Reporting Problem The "Is Overflowing?" field is shown as "True" and a positive value is seen for "Flow (Overflow)", yet the HGL is below…
    • over 5 years ago
    • OpenFlows | Water Infrastructure
    • OpenFlows | Water Infrastructure Wiki
  • "Object reference not set..." crash when using SWMM solver with missing pump Downstream Link

    Jesse Dringoli
    Jesse Dringoli
    Product(s): SewerGEMS, CivilStorm Version(s): 10.00.00.4X, 10.01.00.70 Area: Other Problem When attempting to compute or validate a model using the Explicit (SWMM) solver, the below error appears, followed by a Bentley crash…
    • over 5 years ago
    • OpenFlows | Water Infrastructure
    • OpenFlows | Water Infrastructure Wiki
  • Troubleshooting unstable SewerGEMS and CivilStorm model results using the Explicit SWMM Solver

    Jesse Dringoli
    Jesse Dringoli
    Applies To Product(s): CivilStorm, SewerGEMS Version(s): CONNECT Edition, V8i Area: Layout and Data Input Original Author: Jesse Dringoli, Bentley Technical Support Group Problem When using the Explicit (SWMM…
    • 6 months ago
    • OpenFlows | Water Infrastructure
    • OpenFlows | Water Infrastructure Wiki
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