Another thought regarding question #2 - I believe you may be referring to the attenuation effect whereby the total *system* time is tracked, and as it increases due to travel time, the intensity decreases. In the analysis results seen after computing the model, this does occur, but you'll need to look at the conduits to see it. In the Conduit flextable, add the result field "System Flow Time". Here's an example where the table has been sorted upstream>downstream For more on this, see the Help topic "System Time / Controlling Time / Duration" and this article in our wiki.
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Forum Post: RE: SormCAD- How to get invert level of Box conduit above road surface
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Forum Post: RE: Need help with Water quality (chlorine ) graph
Syeda, I'm confused by your question, but it sounds like you're saying the results for your graph start at hour or minute 76. If that's the case you can change that minimum or maximum values on the axis to make sure it starts at hour 1. Please see the wiki below for steps on how to do this: communities.bentley.com/.../20230.how-do-i-change-my-the-chart-options-on-my-graphs-so-they-start-at-a-certain-time Regards, Mark
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Wiki Page: When working in AutoCAD, when trying to split a pipe with a junction, the junction snaps to the end of the pipe. (Solution 500000070957)
Applies To Product(s): Bentley WaterCAD, Bentley WaterGEMS, Bentley HAMMER, Bentley SewerGEMS, Bentley SewerCAD, Bentley CivilStorm, Bentley StormCAD, Bentley PondPack Version(s): 08.11.xx.xx Environment: N\A Area: Other Subarea: N\A Original Author: Nancy Mahmoud, Bentley Technical Support Group Problem When working in AutoCAD, when trying to split a pipe with a junction, the junction snaps to the end of the pipe. Solution This will occur if the OSNAP feature in AutoCAD is turned on. If you change the OSNAP setting so that it is off, this should no longer occur. If needed, another option could be to split the pipes in the standalone environment and then reopen the project in the AutoCAD environment. See Also OSNAP feature not working for nodes in the AutoCAD environment
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Forum Post: RE: Problem in importing dxf file as pipeline
The DXF you provided contains a point (line without length). AutoCAD recognizes the element as a polyline, MicroStation recognizes it as a line, but ModelBuilder and ArcMap don't since the endpoints are at the same location. I recommend either deleting this element or replacing it with a true line (with length). Unfortunately, there isn't a command in MicroStation or AutoCAD (I know of) that can locate lines without length (endpoints at the same location). I used trial-and-error to locate this element (deleting sections of the DXF and trying to import into ModelBuilder). If you have ArcMap, there is a workflow explained at the following link that will simplify this process. Not all the layers in my DXF file are showing up in ModelBuilder Also See: Importing A CAD (DXF) Drawing Using ModelBuilder [TN]
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Wiki Page: WaterGEMS For ArcGIS [FAQ]
Applies To Product(s): Bentley WaterGEMS, Bentley SewerGEMS Version(s): V8 XM and V8i Environment: ArcGIS Area: N/A Subarea: N/A Original Author: Jesse Dringoli, Bentley Technical Support Group How do I open an existing WaterGEMS model inside ArcMap for the first time? https://communities.bentley.com/products/hydraulics___hydrology/w/hydraulics_and_hydrology__wiki/14036.how-to-open-a-hydraulic-model-in-arcgis-for-the-first-time.aspx How do I create a new WaterGEMS model inside ArcMap? https://communities.bentley.com/products/hydraulics___hydrology/w/hydraulics_and_hydrology__wiki/14155.how-do-i-create-a-new-watergems-sewergems-model-inside-arcmap.aspx How do I open a WaterGEMS model that is already associated with a ArcGIS MXD file? http://communities.bentley.com/products/hydraulics___hydrology/w/hydraulics_and_hydrology__wiki/13455.how-do-i-open-a-watergems-model-that-is-already-associated-with-an-arcgis-mxd-file.aspx How do I save my WaterGEMS model files in WaterGEMS for ArcMap? What is the easiest way to color code WaterGEMS elements inside the ArcMap platform? https://communities.bentley.com/products/hydraulics___hydrology/w/hydraulics_and_hydrology__wiki/12513.how-do-i-color-code-my-elements-in-watergems-or-sewergems-for-arcmap.aspx How do I color code for only one value and then have all other values greater than that be coded another color? https://communities.bentley.com/products/hydraulics___hydrology/w/hydraulics_and_hydrology__wiki/16825.how-do-i-color-code-for-only-value-and-then-have-all-other-values-greater-than-that-be-coded-another-color.aspx How do I color code different properties for the same layer? I'm double clicking on my elements and the properties for the element aren't appearing. Why? https://communities.bentley.com/products/hydraulics___hydrology/w/hydraulics_and_hydrology__wiki/14243.why-a-double-clicking-on-element-doesn-t-show-the-properties-for-the-element-inside-arcmap.aspx What does the geodatabase (.mdb) file do in WaterGEMS for ArcMap? How can I convert my GIS to a WaterGEMS model inside ArcMap? https://communities.bentley.com/products/hydraulics___hydrology/w/hydraulics_and_hydrology__wiki/22411.how-can-i-convert-my-gis-data-to-a-watergems-model-inside-arcmap How do you make elements inactive so they don't show up like you can do in the WaterGEMs standalone? https://communities.bentley.com/products/hydraulics___hydrology/w/hydraulics_and_hydrology__wiki/13348.how-do-you-make-elements-inactive-so-they-don-t-show-up-like-you-can-do-in-the-watergems-standalone.aspx What is a Geotable? https://communities.bentley.com/products/hydraulics___hydrology/w/hydraulics_and_hydrology__wiki/22418.what-is-a-geotable What are some operations that I should NOT be performing in WaterGEMs for ArcMap? https://communities.bentley.com/products/hydraulics___hydrology/w/hydraulics_and_hydrology__wiki/22419.what-are-some-operations-that-i-should-not-be-performing-in-watergems-for-arcmap Can I add a field to a WaterGEMS layer without corrupting the feature class or geodatabase? https://communities.bentley.com/products/hydraulics___hydrology/w/hydraulics_and_hydrology__wiki/22421.can-i-add-a-field-to-a-watergems-layer-without-corrupting-the-feature-class-or-geodatabase Which versions of WaterGEMS support which versions of ArcGIS? See below article: I've integrated WaterGEMS with ArcGIS and I have the correct versions, but I don't see the WaterGEMS menu. Why? https://communities.bentley.com/products/hydraulics___hydrology/w/hydraulics_and_hydrology__wiki/22424.i-ve-integrated-watergems-with-arcgis-and-i-have-the-correct-versions-but-i-don-t-see-the-watergems-menu-why If I'm working in ArcMap without a WaterGEMS model open, am I still using a WaterGEMS license? https://communities.bentley.com/products/hydraulics___hydrology/w/hydraulics_and_hydrology__wiki/22404.if-i-m-working-in-arcmap-without-a-watergems-model-open-am-i-still-using-a-watergems-license After working on a project in ArcGIS mode and saving an .mxd, why does the WaterGEMS model not appear when reopening the .mxd? https://communities.bentley.com/products/hydraulics___hydrology/w/hydraulics_and_hydrology__wiki/22406.after-working-on-a-project-in-arcgis-mode-and-saving-an-mxd-why-does-the-watergems-model-not-appear-when-reopening-the-mxd When working in ArcGIS mode, why are the tools in the WaterGEMS layout toolbar grayed out? https://communities.bentley.com/products/hydraulics___hydrology/w/hydraulics_and_hydrology__wiki/22397.when-working-in-arcgis-mode-why-are-the-tools-in-the-watergems-layout-toolbar-grayed-out How can I enable the flow arrows and active topology colors when working in ArcGIS mode? https://communities.bentley.com/products/hydraulics___hydrology/w/hydraulics_and_hydrology__wiki/22407.how-can-i-enable-the-flow-arrows-and-active-topology-colors-when-working-in-arcgis-mode How do I remove a color coding from a WaterGEMS layer? https://communities.bentley.com/products/hydraulics___hydrology/w/hydraulics_and_hydrology__wiki/22427.how-do-i-remove-a-color-coding-from-a-watergems-layer In WaterGEMs for ArcMap I don't see a dashed line connecting the customer meters or isolation valves to the associated element like I do in WaterGEMS standalone. Why is this? https://communities.bentley.com/products/hydraulics___hydrology/w/hydraulics_and_hydrology__wiki/17223.in-watergems-for-arcmap-i-do-not-see-a-dashed-line-connecting-the-customer-meters-to-the-associated-element-like-i-do-in-watergems-standalone-why-is-this.aspx When annotating or color coding in the ArcMap platform, why aren't all the WaterGEMS attributes available? https://communities.bentley.com/products/hydraulics___hydrology/w/hydraulics_and_hydrology__wiki/22408.when-annotating-or-color-coding-in-the-arcmap-platform-why-aren-t-all-the-watergems-properties-available What is the best procedure to use when creating a shapefile or feature class to help ensure that when I create a model from it using modelbuilder I won't run into problems with pipe or junction connectivity? https://communities.bentley.com/products/hydraulics___hydrology/w/hydraulics_and_hydrology__wiki/22409.when-creating-a-shapefile-or-feature-class-how-do-i-help-ensure-that-when-i-build-a-model-using-modelbuilder-i-won-t-run-into-problems-with-pipes-or-junction-connectivity What is the difference between using the "WaterGEMS for ArcMap" shortcut versus opening ArcMap normally? When I go to view the extensions (Customize > Extensions) in ArcMap I see the license is listed as not available. Why ? How do I automatically get my layers in WaterGEMS for ArcMap to populate the WaterGEMS symbology that's in standalone or in the WaterGEMS/CAD for AutoCAD version? What is the best approach for creating a polyline shapefile or feature class that will be used to build your model using Modelbuilder? See Also Product TechNotes and FAQs Haestad Methods Product Tech Notes And FAQs [[General WaterGEMS V8 FAQ|General WaterGEMS V8 FAQ]] WaterGEMS V8 Modeling FAQ Hydraulics and Hydrology Forum External Links Bentley SELECTservices Bentley LEARN Server
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Wiki Page: How do I change my the chart options on my graphs so they start at a certain time?
Applies To Product(s): Bentley WaterGEMS, Bentley SewerGEMS, Bentley CivilStorm, Bentley StormCAD, Bentley PondPack, Bentley SewerCAD, Bentley HAMMER, Bentley WaterCAD Version(s): 08.11.XX.XX Environment: N/A Area: Original Author: Mark Pachlhofer, Bentley Technical Support Group Problem How do I change my the chart options on my graphs so they start at a certain time? Steps 1) With the graph option select chart options from the drop down shown in the screen shot below 2) In the chart options dialog browse to the Axes tab > select 'Bottom Axis' > click the "Change" button on the 'Minimum' tab and set the time to whatever is appropriate for you needs. 3) After you are done click the close button at the bottom of the chart options dialog box and the graph should update.
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Wiki Page: Importing A CAD (DXF) Drawing Using ModelBuilder [TN]
Applies To Product(s): WaterCAD, WaterGEMS, HAMMER, StormCAD, SewerCAD, SewerGEMS, CivilStorm Version(s): 08.11.XX.XX Environment: N/A Area: Layout and Data Input Original Author: Jesse Dringoli, Bentley Technical Support Group Overview Some older versions of the Hydraulics and Hydrology product line (WaterCAD, WaterGEMS, StormCAD and SewerCAD) used a much different procedure for converting "polylines to pipes", compared to the 08.XX.XX.XX versions. This TechNote provides tips and techniques for effectively importing a CAD drawing into V8 XM or V8i using the new method. This procedure is similar for WaterCAD, WaterGEMS, HAMMER, StormCAD, SewerCAD, SewerGEMS, and CivilStorm. Background In older versions of WaterCAD, WaterGEMS, StormCAD and SewerCAD, the user would import a CAD drawing (.dxf or .dwg) via File > Import > Polyline to Pipe . Upon release of the V8 XM edition, this functionality was merged into Modelbuilder, which is a powerful tool used to import many different types of data. Since the steps in the Modelbuilder process are very similar for most data source types, there are some extra options involved for a CAD drawing, which could initially cause some confusion to new users of V8 XM and V8i. Preparing the CAD Drawing 1. First, you should take some time to clean up your CAD drawing prior to performing the conversion. Look for entities that should not be converted, such as leader lines, and move them to their own layer. Turn off or remove layers that you do not wish to convert. Do a quick review of your drawing and correct any potential conversion problems that you may find. Note: It is recommended that you perform a "save-as" before cleaning up the drawing, so that you can retain the original. 2. Next you will need to save your CAD drawing into a DXF format, as this is the only CAD type format that Modelbuilder currently accepts. DXF is the "drawing exchange format", so almost all CAD programs have the ability to save to it. Whenever possible, try to save to the earliest DXF format, for better compatibility. For example, in AutoCAD, go to File > Save As, and choose "2004 DXF" as the format. Importing Your CAD Drawing Using Modelbuilder Note: This process remains the same whether you are in the standalone, AutoCAD, Microstation, or ArcGIS platform. This process also assumes that you have certain pipe diameters separated by layer and that you're using V8i version of the software. If you're using V8 XM instead, the steps in the Modelbuilder process will look slightly different, but basic procedure remains the same. 1. Open WaterCAD/GEMS and start a new project. Ensure that the correct unit system is specified.Go to Tools > User Data Extensions. 2. Right click on "Pipe" and choose to create a new user data extension. We will import the layer name into this field so that we can assign diameters at a later point. Give it a name, keep the default data type of "Text" and click OK. 3. Start Modelbuilder by going to Tools > Modelbuilder. In the main window, click the "New" button to start a new Modelbuilder run. 4. In the first step, select "CAD Files" as the Data Source type and browse to your .dxf file. Once selected, a table will be displayed in the lower left corner, showing all the layers that exist in the drawing. Layers that you would like to be imported should be checked. Unchecked layers will not be imported. The layer type will be displayed after the name of each layer, showing you if the layer contains points, lines, or polygons. In this example, we have checked only the layers that represent water distribution pipes of various diameters. Layers containing roads, annotations,and other irrelevant items have been unchecked: Note: If you have a lot of layers that need to be unchecked, you can right-click anywhere in the list and choose "clear selection". Note: In many cases, nodal elements such as tanks, pumps, etc are represented in a CAD drawing as a series of lines. In this case, they cannot be imported as their respective nodes in the modelbuilder process. The user must enter these elements later on after the import. 5. Click the 'Next' button to proceed to the second step. In this step, you should select the appropriate unit and also make sure the check box next to "Establish connectivity using spatial data" is checked. This option allows Modelbuilder to use the spatial information inside the CAD file (lengths, coordinates of endpoints/bends, etc) to build the model, instead of the user needing to explicitly specify the start/stop node (which is typically not possible for a CAD drawing.) In addition to this, the "Tolerance" field will allow Modelbuilder to automatically connect pipe end points that are within the specified value. Make sure "Create nodes if none found at pipe endpoint" is checked. In most cases, only polylines are imported from a CAD drawing, so you'll want junctions to be created at the ends of these. For the "Tolerance" options, take the following CAD line for example In this zoomed-in view, notice that a gap exists due to drawing imperfections. This gap is 1.5ft wide. Now, if we import this CAD file with 1 ft. set as the tolerance it will create two nodes at the actual end points of these pipes This is because the distance between the end points was not within the tolerance. If we were to instead import this drawing with a 2ft tolerance, it would connect these end points and join them at a junction: 6. Next, you will only need to keep the "Add objects to destination if present in source" box checked, since we are creating new elements based on the CAD drawing data. 7. In step 4, accept the defaults of "Current scenario" and "Label". 8. In step 5, you must configure how the data in each layer is mapped to WaterCAD/GEMS. Click each layer from the list on the left and then configure the attributes on the right: "Table Type" This is used to select the type of element that a layer will be imported as. For a CAD file, you will most likely be importing polylines only. So, this field will be set to "Pipe" (for WaterCAD, WaterGEMS and HAMMER) or "Conduit" (for SewerCAD, SewerGEMS and CivilStorm). "Key/Label" This is the field used to create labels for the elements created by the modelbuilder process. It is also used to link up elements when updating existing ones. In the case of importing a CAD drawing, most likely a field containing unique labels does not exist for the polylines. So, you should select " " for each layer. This will cause Modelbuilder to automatically generate unique labels, utilizing a combination of an element's layer type label, its shape type, and a numeric ID that represents the order in which it was created. "Start"/"Stop" Choosing the "Establish connectivity using spatial data" causes the connectivity information to be taken from the CAD drawing, so you do not need to specify a start/stop node field for the pipes/lines. So, simply leave these as " ". "Attribute" At the bottom right corner of this Modelbuilder step, the user can link fields in the source data to fields in the program. In the case of a CAD drawing, typically there are no additional, useful attributes. However, you could link the "Layer" field to the user data extension attribute that you created in step 2. In this example, the user data extension was named "AutoCADLayer": By linking this field, there will be an attribute in the WaterCAD/GEMS model that contains the name of the layer that the pipe came from. Later on this will be useful. Note: Make sure that you set the key/label field and "layer" mapping for each layer. If your DXF contains points, they will show up as separate layers on the left side. You can then click and assign them to a node element type such as Junction. 9. In the last Modelbuilder step, choose to build the model. Modelbuilder will then import the layers and provide you with a summary, including a "Messages" tab that you can use to view informational messages about the import process. In this case, there are some messages about nodes being created due to missing start/stop nodes. This is expected since we were only importing polylines, with the "Create nodes if none found at endpoint" option selected. 10. After closing the summary and closing Modelbuilder you will be prompted to synchronize the drawing. Choose "Yes" and your model should show up in the drawing area. If it does not, then go to View > Zoom > Zoom Extents. Note: Upon completion of your ModelBuilder run, it is suggested you use the Network Navigator tool to identify any connectivity or topological problems in your new model. Assigning Pipe Diameters Now that our model has been created, we can assign diameters to the pipes, based on the layer attribute that we imported. 1. Open the pipe flextable via View > Flextables. 2. Click the yellow Edit button ( ) and add your user data extension. To do this, first find it in the list on the left side, click on it, and then click the single arrow button pointing to the right side. Click OK and you will now see a column in the flextable, containing the layer that each pipe came from. In our example case, the layer "12_WATER" represents 12" pipes, "16_WATER" represents 16" pipes, and so forth. 3. Right click on any of the column headers, choose "Filter", and select "Custom". In the query window, double click on your user data extension field from the list on the left and click the equals sign button. Then, click the green button on the top-right corner to retrieve a list of unique values from this field. Double click on one of the diameters (layer names) shown. In our example case, we'll start with the 10" layer: When you click OK in the query window, the flextable will be filtered to only show pipes that came from the layer that you queried on (those from the "10_WATER" layer in our example case.) Note: After performing your filter, the bottom left corner of the flextable will show you how many pipes met the query condition and are displayed (for example "68 of 4714 elements displayed") 4. Now, assign the correct diameter by right clicking on the "Diameter" column header and choosing "Global Edit". Keep the operation as "Set", and enter the appropriate diameter as the value. Click OK and your diameters will be assigned. 5. Repeat steps 3 and 4 for each layer, assigning out all your diameters. Note: When done, you can reset your filter by right clicking on any column header and then choosing Filter > Reset. Note: An alternative way to assign diameters would be to bring each layer in one by one. Instead of using the user data extension, create a Prototype under View > Prototypes, and set the pipe diameter to the smallest one in your CAD Drawing. Next, uncheck all layers in the first Modelbuilder step except for the one corresponding to that diameter. Import the pipes per above and they'll be assigned the diameter specified in the prototype. Next, change the pipe prototype diameter to the next size, open the Modelbuilder run again, uncheck the first diameter and check the next one. Continue on like this for each diameter. Troubleshooting When importing a DXF layer which contains only lines or polylines, ModelBuilder recognizes the layer as a polygon instead of polylines. Make sure all polylines have a length. The DXF layer may contain a point (line without length). Other applications such as MicroStation and AutoCAD may recognize the element as a polyline, but ModelBuilder does not since the endpoints are at the same location. Either delete these points or replace them with a line that has a length. This is also discussed in this article . See Also Building A Model Using ModelBuilder [TN] Updating A Model Using Model Builder Not all the layers in my DXF file are showing up in ModelBuilder Product TechNotes and FAQs Haestad Methods Product Tech Notes And FAQs Hydraulics and Hydrology Forum External Links Bentley SELECTservices Bentley LEARN Server
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Wiki Page: Not all the layers in my DXF file are showing up in Modelbuilder
Applies To Product(s): WaterGEMS, SewerGEMS, CivilStorm, StormCAD, PondPack, SewerCAD, HAMMER, WaterCAD Version(s): 08.11.XX.XX Environment: N/A Area: Original Author: Mark Pachlhofer, Bentley Technical Support Group Problem Not all the layers in my DXF file are showing up in ModelBuilder and the layers that aren't visible are the ones I need to build my model. I can I workaround this issue or fix it. How can I fix a damage or corrupt DXF file? Solution If the file is opened in ArcMap the file will automatically be split into the layers that make it up (points, polylines, polygons, multipatch, and annotations). What you need to do is left click once on the layer you want to create a shapefile for then right click and choose Data > Export > and choose the option to export the file to a shapefile (geodatabase feature class is selected by default). (Please visit the site to view this video) After the file is export you can add it to the map to examine it, but it should be read immediately to use in ModelBuilder to create or update your model file. Another solution you could try is to open the file in MicroStation or AutoCAD and perform the same type of steps as listed above, if you're more familiar with that software. You could also use MicroStation or AutoCAD to try to save the file in an earlier version of the DXF format and see if that helps. See Also Importing A CAD (DXF) Drawing Using ModelBuilder [TN] Forum Thread: Problem in importing dxf file as pipeline
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Forum Post: RE: Need help with Water quality (chlorine ) graph
If needed, please send a screenshot of the graph in question and include a copy of your model file for review. There are two options for sharing your model on Communities, whichever you choose please be sure to zip your files first. The first option is to attach the zip file containing your model to your reply on the forum using the Advanced Reply Editor (you'll find the link below and to the right of the reply box). If your data is confidential please use the instructions in the link below to send it via Bentley Sharefile. Files uploaded to Sharefile can only be viewed by Bentley employees. Please be sure to reply on this thread with the name of the file after it has been uploaded. communities.bentley.com/.../7079.be-communities-secure-file-upload
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Forum Post: RE: Problem in importing dxf file as pipeline
Hi Sujoy, I edited my original response. Please let us know if this helps.
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Forum Post: "Graph Series Options" Default Check Boxes
I'm running a Chlorine residual analysis. After each run completes I like to look at results for individual elements. To do this I right-click on a pipe or node, select "Graph" and the "Graph Series Options" box opens. In the "Fields" window (right hand side), "Pipe" is checked by default. Is there any way to change the default? I would like to set a check box in "Results (Water Quality)" as the default. It's very time consuming to have to uncheck "Flow", then expand the "Results (Water Quality)" list, then check the parameter I want to view.
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Forum Post: RE: Can I recover an old WATERCAD file that was deleted by accident?
Hi Craig C., I think I made a mistake. The software that I´m currently using is WaterGEMS V8i. The version number is 08.11.05.61. I´m not sure if the problem relates to the version of the software because I have been using the same version for a long time. I would be grateful if you could help me checking up the file that I have attached. (Please visit the site to view this file)
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Forum Post: RE: Can I recover an old WATERCAD file that was deleted by accident?
The first thing I did was try to open the WTG file in a text editing program to see what version was last used to edit the file. When I did this, there wasn't text as I was expecting. When I open the model you provided the following dialog appears. This error is discussed here . That article suggests the WTG file is corrupt and that makes sense since it didn't open as expected in a text editor. However neither of the solutions in the article were successful with your model. I will open a service request on your behalf and submit a defect to address this. Please reply to my private message with your details so I can add you to our system.
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Forum Post: RE: "Graph Series Options" Default Check Boxes
I created a service request on your behalf and associated it with enhancement request #72876. You should receive an email informing you of the service request number.
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Forum Post: RE: "Graph Series Options" Default Check Boxes
Have you tried saving the graph(s) you are interested in so that you can reopen them later? Regards, Mal
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Forum Post: Water Quality Analysis
I am working to conduct a water quality analysis particularity, chlorine residuals. I have read the articles available and worked the Quickstart lesson in WaterGEMS. However, I am still needing some guidance on what values to choose as the first order reaction rate and the diffusivity rate that is necessary to run the analysis. I am a new user to WaterGEMS so any an all advice is greatly appreciated! Thank You, Amanda
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Forum Post: RE: "Graph Series Options" Default Check Boxes
I didn't until you suggested it! The graph updates automatically with the latest data - exactly what I need. Thanks so much for your suggestion.
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Forum Post: RE: "Graph Series Options" Default Check Boxes
Thanks, Craig. I think that would be a nice feature to implement.
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Forum Post: RE: Water Quality Analysis
Usually you should run a bottle chlorine decay test in the lab to determine the bulk reaction rate. use that rate in the model and see how well it calibrates. If you don't have sufficient decay, then start increasing the wall reaction rate. It's best to not mess with the diffusivity. The default value should be good for chlorine.
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Forum Post: RE: Water Quality Analysis
Tim, In order to get accurate data would multiple bottle tests need to be conducted at various location along the distribution system and the respective bulk coefficients averaged together? Amanda
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