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  • SewerGEMS Existing and Proposed Conditions

    I am brand new to the world of SewerGEMS, so forgive me if this is too basic of a question for the forum. What is the best way to build a proposed network that ties into an existing network in SewerGEMS? As a basic example, in some areas, I have culverts…
  • Is it possible to report flow results on the 2D grid or along a given path?

    Product(s): SewerGEMS, CivilStorm Version(s): 10.04.00.158 Area: Modeling Problem Is it possible to report flow results on the 2D grid or along a given path? Solution As of version 10.04.00.158 (CONNECT Edition Update…
  • Editing X-Y coordinates in Flex Table

    Hello, I need to updated X-Y coordinates of my cross sections in the flex table. Though it is possible to change coordinates of individual CS, it is not possible to do it in flex table. How can I change coordinates of set of CS in one go? Thanks…
  • SewerGEMS crashing when running Critical Storm Analyis

    I am trying to run the Critical Storm analysis and it keeps crashing. We are using the latest version of the SewerGEMS 10.04.00.158 Any suggestions, please! Model files are also shared vide below link. SW Model Files
  • How to represent a regulator chamber in sewergems?

    In general, if I have something like this below. What would be the best way to represent this chamber in sewer gems? Is there some type of regulator chamber icon I use? Or do I use pipes and split them and put controls on them for the weirs? Any advice…
  • how to reduce continuity error in specific pond from model?

    I have run my model and received a very high continuity error in a specific pond in my model. My pond is going to an outlet structure and then an oufall somewhere else in the model is using that pond for a boundary condition. When i plot HGL, flow in…
  • Modelling of perforated pipes to exfiltrate the flow to soil

    Hello, I am trying to model system where the runoff generated will be captured by gullies and is exfiltrated into ground through perforated pipes running as a network. In this i have adopted the Pipe seepage loss in Explicit SWMM solver and tabulated…
  • Using the "Correct for Partial Area Effects" Calculation Option in StormCAD (GVF-Rational Solver)

    Product(s): StormCAD, CivilStorm, SewerGEMS Version(s): CONNECT Edition, V8i Area: Calculations How does "Correct for Partial Are Effects" work? The "Correct for Partial Area Effects" Calculation Option is available with…
  • Exporting Profile Annotation Table

    Product(s): SewerGEMS, SewerCAD, StormCAD, CivilStorm Version(s): CONNECT Edition Area: Output and Reporting Problem How can I export the information seen in the profile annotation table? Solution There are a few options…
  • Soakaway

    Hello, what is the difference between elevation area vs storage chamber in the seepage rates? if i’ve used the same seepage and the same dimensions , is there’s any difference in the seepage between both? Also what’s the best way to model such detail…
  • Volume results not available for outfalls and conduits in Properties or FlexTables, even though graphs will display results

    Product(s): SewerGEMS, CivilStorm Version(s): 10.04.00.158 Area: Modeling Problem It is possible to graph the volume results at an outfall in a SewerGEMS and CIvilStorm model. However, there is no numerical data in the Data…
  • User Notification: The structure invert xxxx ft is lower than the headwater minimum elevation xxxx ft.

    Product(s): CivilStorm, SewerGEMS, PondPack Version(s): CONNECT Edition Area: Modeling Problem A user notification is generated when computing a rating table: The structure invert xxxx ft is lower than the headwater minimum…
  • Warning Notification " structure invert XX ft lower than headwater minimum elevation XX ft"

    Hi, I got the warning notification stated above and I looked at my model and it seems that we have the lowest office in the pond outlet to be lower than the pond outlet invert and the headwater elevation. I am thinking that I need to fix that by placing…
  • Warning notification "Air valves are treated as junctions with large surcharge depths."

    Hi, Again i got this warning notification stated above when i validated my model. Again i was not sure what this notification is really trying to tell me? It does not allow me to zoon into a structure, pipe, pond or anything so not sure where in my…
  • notification warning "The composite outlet structure EQT has one or more headwater elevations with reverse flow conditions. Calculated reverse flow may be approximate."

    Hi, I am getting the notification stated above in my question. If I want to portray reverse flow is that something I need to worry about fixing or is it just warning me there is reverse flow so I am aware of it? Please advise. Thanks, …
  • Defining of slope constraints(Default Design Constraints) for Rectangular Channel

    Hi, Is there any way to define slope constraints for the rectangular channel in sewer gems for AutoDesign? it's very easy for the case of pipe defining RISE and their Design min and max slope but for any rectangular section, there would be multiple…
  • Rectify issue in Explicit Solver

    Hello, I'm simulating a drainage network in SewerGEMS. The network consist with open channels, closed conduits, pond, pump, POS(no control structure). when I simulate the model in Explicit and implicit solvers, I'm getting two different profiles as…
  • SewerGEMS-Object reference not set to an instance of an object

    Refer the posti n this link: Object reference not set to an instance of an object.' I have the same message, and I followed the steps in the above link but still the issue is exist. actually the model is running in previous version SS2 without this…
  • Using Pond Void Space

    Product(s): SewerGEMS, CivilStorm Version(s): CONNECT Edition Area: Modeling Problem What is the purpose of the "Percent Void Space" column in the properties of a pond's elevation-area or elevation-volume curve? Solution…
  • Void Space Values other than 100%

    Hi, After validating a model before running it I found another error as stated below: "The SWMM engine does not support Void Space values other than 100 percent. Alternate values are ignored." I zoomed into it and it went to a pond and I tried…
  • 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…
  • Using the Hydraulic Reviewer

    Product(s): SewerGEMS, CivilStorm Version(s): CONNECT Edition, V8i Area: Calculations Background The Hydraulic Reviewer is a tool available for the Implicit and Explicit (SWMM) solvers in SewerGEMS and CivilStorm. It enables…
  • Coffee Corner: OpenFlows - OpenFlows: Taking Advantage of Inbuilt Investigative tools

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    Learn about Openflows’ inbuilt tools to assist in optimizing results, modifying model inputs, and displaying relevant data from your hydraulic model. We will explore: Selections Sets - Efficient utilization of groupings Scenarios and Alternatives...
  • Can a model be opened between multiple platforms? (Standalone, ArcGIS, MicroStation, AutoCAD)

    Product(s): WaterGEMS, WaterCAD, HAMMER, SewerGEMS, SewerCAD, StormCAD, CivilStorm Version(s): CONNECT Edition Area: Integration Problem If a model is saved in the "...for ArcGIS Pro", "...for ArcMap", "...for MicroStation…
  • What is the slot width of a Slot Inlet?

    Product(s): FlowMaster, StormCAD, SewerGEMS, CivilStorm Version(s): CONNECT Edition, V8i Area: Modeling Problem For a Slot Inlet, where do I enter the sloth width and how is it used? How do I solve for slot width for…