OpenFlows | Water Infrastructure
OpenFlows | Water Infrastructure Wiki
Troubleshooting unstable SewerGEMS and CivilStorm results using the implicit solver
OpenFlows | Water infrastructure Wiki
Calculations - Bentley SewerGEMS
Compatibility Chart – OpenFlows and Civil Designer products
Deleting multiple patterns (bulk delete)
Difference between a "surcharged" and an "overflowing" node
Distributing catchment runoff evenly over a channel or multiple inlets
Error message when computing model with open profile: Object reference not set to an instance of an object
General - Bentley SewerGEMS
Get to know SewerGEMS, CivilStorm, SewerCAD and StormCAD CONNECT Edition
Ground elevations appear incorrect in engineering profile when using terrain model
Help and Documentation - Bentley SewerGEMS
How to convert SewerGEMS element notes to EPA SWMM descriptions
How to create a custom rainfall distribution
Importing Land Use data into SewerGEMS using ModelBuilder
Integration - Bentley SewerGEMS
Interchange - Bentley SewerGEMS
Layout and Data Input - Bentley SewerGEMS
Modeling - Bentley SewerGEMS
"Depth (Surcharged)" vs. Ponded Area surface storage
Are Channels prismatic or non-prismatic?
Changing invert elevation on pressure pipe
Chicago Storm IDF Curve
Conduit vs. Channel
Cross section vs Transition for modeling slope or size change
Differences between solvers: GVF-Convex vs. GVF-Rational vs. Implicit vs. Explicit (SWMM)
Distributing loads based on areas of different Population type
Diversion link not being "designed" / ignored by the GVF-Convex / GVF-Rational Solver
Error / User Notification: Error executing query. Pump Discharge link is inactive, not selected or does not exist.
Error computing Explicit (SWMM) solver: "Error 211: Invalid number"
Error computing model using Explicit solver: ERROR 173: Time Series (element label)_Inflow_Ts has its data out of sequence
Error computing model with Explicit solver: The SWMM engine only supports a single outflow/inflow link to an outfall
Error computing model: "Calculation cancelled by user" OR "Specified cast is not valid" OR "An item with the same key has already been added"
Error computing model: Non-negative number required. Parameter name: newSize
Error computing model: Offset and length were out of bounds for the array
Error opening model: Root Element is Missing
Error opening profile in Storm-Sewer products: Index out of range. Must be non-negative and less than the size of the collection.
Error running model: "There is no conduit connected to the outfall, or the conduit is inactive."
Error using profile auto-create feature: Start node ?? and stop node ?? are the same node. Looped links are not supported.
Flow in conduit doesn't follow load pattern specified
How do I input the elevations for an irregular weir cross section in composite outlet structures?
How do I model an infiltration trench that does not discharge water?
How do I perform a sensitivity analysis?
How to model a bridge scupper
How to model a swale in the storm and sanitary products
In a branched system that comes back together at a single point, the losses through the manhole do not appear to be taken into effect
Is it possible to import the complex shape type into ModelBuilder as a polygon?
Modeling a Combined Sewer
Modeling a flow restriction at an outfall
Modeling a flow split (diversion) in SewerGEMS or CivilStorm
Modeling a side weir conduit control structure
Modeling a wastewater effluent diffuser
Modeling Air Flow in Storm and Sanitary Sewers
Modeling an Ideal Pump (Outflow matches Inflow)
Modeling an Inverted Siphon
Modeling catch basin overflow into gutter
Modeling evaporation in a pond?
Modeling Fish Ladders
Modeling Grinder Pumps
Modeling Outfall Flap Gates (Tidal Gates)
Modeling Ponds with Pumps
Modeling pump station components like inlet wall, screen chamber and inner piping losses
Modeling septicity / hydrogen sulfide (H2S)
Modeling sewer network discharge into a treatment plant
Modeling stormwater gate valve open and closure controls
Modeling wetwell overflow
Notifications about conduits operating under pressure or being in the Preissmann slot
Pattern load handling with the Explicit (SWMM) solver
Performing clash detection of storm sewer and water hydraulic models
Pond and pond outlet assumptions in StormCAD, SewerGEMS, CivilStorm and SewerCAD
Prediction of quality characteristics of sewers
Pressure Junction vs Transition vs Manhole
Property Connection to a Diversion Link
Sanitary loads are not being applied
Selecting catchments upstream of a certain element
Tips on Sewer Calibration
Troubleshooting "N/A" results in H2S Modeling for pressure pipes
Troubleshooting unstable SewerGEMS and CivilStorm results using the implicit solver
Understanding the Sanitary Load Control Center and Inflow Control Center
Unexpected decrease in flow is seen between two pressure pipes in series
User notification for nodes disconnected from an outfall, however all nodes appear to be connected
User notification: "Implicit (SewerGEMS Dynamic Wave) engine does not support Daily or Monthly patterns. 1 is used for pattern Daily and Monthly multipliers."
Using Downstream Trace and Digital Terrain Models
Using Element Property Inferencing to populate missing elevations or elements
Using SWMM Control Sets in SewerGEMS and CivilStorm
Using the Gutter Cross Section Viewer to visualize and view gutter results
Using the Weighted Q method for catchment runoff
Using Unit Loads and Extreme Flow Factors after a LoadBuilder run
Visualizing results for cross section elements
What Happens When the Water Level Exceeds the Top Elevation of an Open Channel?
What is a virtual pressure pipe and how virtual pipes are handled by each solver?
Modeling non-standard conduit or channel shapes
OpenFlows product menus missing or not working from Ribbon interface for MicroStation CONNECT Edition integrated version
Other - Bentley SewerGEMS
Output and Reporting - Bentley SewerGEMS
Pollutant Collection field missing from Results section of the property grid
Ribbon Interface for CONNECT Edition products
Scenario energy cost "Time of Use" doesn't match calculation options "Duration"
Seepage results less than the value entered for Constant Flow seepage method
SewerGEMS for MicroStation crashes when exporting model to InRoads Drainage file
Transition Start vs. Warm Start for the Implicit solver calculation options
Using Engineering Standards
Using Local Storm Events to Model Multiple Storms in a Single Scenario
Using SWMM Time Series Control Data in the Explicit solver
Using the Critical Storm Analysis feature
Using the TR-55 Shallow Concentrated Flow Method
What are the limitations of importing/exporting SWMM5 files?
What is the difference between the kinematic wave option and the dynamic wave option in the SWMM solver?
What's New in SewerGEMS, CivilStorm, SewerCAD, StormCAD, and SewerOPS CONNECT Edition Update 3.4 (version 10.03.04.53)
What's New in SewerGEMS, CivilStorm, StormCAD, SewerCAD, and SewerOPS CONNECT Edition Update 3 (version 10.03.03.44)
What's new in SewerGEMS, SewerCAD, StormCAD and CivilStorm CONNECT Edition Update 2 (Build 10.02.01.04)
What's New with SewerGEMS and CivilStorm CONNECT Edition Update 2
What's New with SewerGEMS CONNECT Edition Update 1
What’s new in StormCAD, SewerCAD, SewerGEMS and CivilStorm V8i SELECTseries 5 with CONNECT Integration?
Why don't my catchments that use the RTK method produce the hydrograph shape that my flow monitoring device in the system shows?
Help and Documentation
Licensing / Activation
Layout and Data Input
Output and Reporting
OpenFlows Product TechNotes And FAQs
Check boxes do not appear in tables such as Control Sets dialog
Consuming ContextCapture production files within your hydraulic model
Convergence NOT achieved Message when computing StormCAD or SewerCAD model
Converting Junctions or Hydrants to Isolation Valves
Displaying Shapefile Labels (Text) As a Background
Enhancing OpenFlows multi-user workflows with ProjectWise Share
Error 32768 when opening model while integrated with ProjectWise
Errors installing patch set
Error when opening PondPack: "Object reference not set to an instance of an object" or "Application has generated an exception that could not be handled."
Error when saving or validating: System.AccessViolationException: Attempted to read or write protected memory.
File Open Dialog does not appear
Flextable Report of Multiple Element Types
Get to know OpenFlows CONNECT Edition
Get to know WaterGEMS, WaterCAD and HAMMER CONNECT Edition
How do I import/export multiple point pump curve pump definitions into a model using ModelBuilder?
How do you save backup files, so they save at different times and multiple levels?
How does the intermediate geodatabase (.MDB or .GDB) file function with ArcMap and ArcGIS Pro integration?
How to Delete Engineering Libraries if you get a message about a Read-only database
How to receive alerts on new version availability?
How to register DAO360.dll or a dll file?
How to search using wild cards on a sqlite type of database
How to See Hebrew or Arabic text in a .DXF file that was exported from WaterGEMS/WaterCAD
Hydraulic grade discontinuity at steep pipes or across nodes (frontwater analysis)
I get a red user notification that says, "Inlet guttter mannings n should be greater than 0".
Importing .HLB library files from old product versions into format used in the V8 product versions
Importing External Data in Geographic Coordinate Systems
Importing storm data and other library information from older versions
Changing element symbols in the AutoCAD platform
Locating OpenFlows product error log file
Locating OpenFlows Product Version Number and License Information
Model backward / forward compatibility
Modeling a closed loop system
Modeling a flow split (diversion) with the SewerCAD or StormCAD numerical solver
Modeling turbine load acceptance plus load rejection
Multiple CN numbers for a catchment and multiple catchments with a single outlet node
Network Navigator Trace Upstream/Downstream does not return any elements
OpenFlows software numerical solver theory
Percent Connected Impervious Areas and Percent Unconnected Impervious Areas
Performing a hydrosanitary design in WaterGEMS or WaterCAD
PondPack user notification: "The composite outlet structure is either not selected or deleted."
PondPack: How to perform a critical duration analysis?
Pressure pipe vs. conduit between pump and wetwell
Print Preview > Fit to Page shows blank page
Properties not working when using MicroStation integration with ProjectWise
Properties, Flextables, user notifications, or other dialog is missing or will not open in standalone
Properties, user notifications, or other tool managers not showing up in Integrated version of AutoCAD
Reusing Pump Definitions (Import / Export)
Reversing orientation of Pipes and Conduits in Bulk
Saving a hydraulic model when using the AutoCAD platform (i.e. integrated)
Important License Update for OpenFlows Users
Setting the invert elevation for multiple conduits coming into one manhole
Simple Controls vs. Logical Controls
Sorting and relabeling a flextable based on upstream-downstream order
Source of the default Specific Speed for pumps and turbines
Step by step procedure for finding the curb length needed to capture 100% of gutter flow in a curb inlet with a continuously depressed gutter with no clogging
System.Reflection.TargetInvocationException crash when trying to open the application
Test Wiki Page - A1
Text, cells/blocks and line styles do not display correctly in a DXF background layer
The flow annotation (label) in my WaterGEMS for ArcMap isn't reflecting the value displayed in my Geotable or Flextable
The total area in the CN/Area Collection does not equal the total catchment area
Time tolerance setting in SCADAConnect Simulator
Troubleshooting ArcMap / ArcGIS Integration
Understanding Flow (Additional Subsurface) and Flow (Additional Carryover)
Upcoming training and release dates for OpenFlows products
User notification "Downstream TW out of range..."
User notification "Pump exceeds the maximum operating point specified for the pump curve"
User Notification - The captured surface flow at this node does not connect a valid subsurface network. The flow is lost from the system.
User Notification: "There is an error in the data for this pipe. The associated data is incorrect"
User Notification: Cross section maximum elevation is above the maximum headwater elevation
User Notifications: "Pump On elevation is not in the range of upstream ...." and "Off elevation of pump is lower than ..."
Using batch pipe split to fix nodes that overlay a pipe instead of connecting to it
Using PondMaker with different tailwater for each return event
Valve "Status (Initial)" Definitions
Velocity Calculations and the Average Velocity Methods in SewerCAD and StormCAD
Viewing graph data for multiple scenarios
Water age results in a pipe are different from the age in the downstream junction
Water Loss Management
Water quality Analysis during transient events
What are the limitations of importing/exporting EPANET files?
What is the dotted line that is associated with the isolation valves? Can I turn them off?
What's new in WaterCAD, WaterGEMS and HAMMER V8i SELECTseries 6 with CONNECT Integration?
What's New in WaterOPS CONNECT Edition 2.3 (Build 10.02.03.06)
When the user changes the fluid, why doesn't the calculated pump head change?
Working From Home With Your OpenFlows Software
"An error occurred when trying to calibrate the model"
"COM Error Not Documented" when opening OpenFlows product
"Default license feature configuration not found. Product features may be limited. Please run the License Administrator."
"The Depth-Flow, Depth-Flow (Simulated Variable Speed) and Volume-Flow pump definition types are unsupported"
"Unable to assign attribute ... for element because enumeration value ... is not valid."
Add custom data to profile with User Data Extensions
After computing a model with the SWMM solver, what does the following warning mean: "Maximum depth increased for node CB-XX"?
After computing the model, the pump efficiency results are listed as N/A
After running loadbuilder I get a message that says "The layer <Layer_Name> could not be opened."
At what point does OpenFlows product license usage start when integrated with MicroStation?
Background image quality poor on some computers or Crash when opening models with background layers
Blocky stepwise pattern is displayed instead of a continous smooth pattern that was entered when using the SWMM engine
Can User Data Extensions be shared between elements in a model?
Catch basins imported as manholes from LandXML
Change in results before turbine load rejection occurs
Custom quadrant curve not being recognized
Date-time based query not working
Default license configuration not retaining setting
Do inactive elements count against the license count?
Does HAMMER support initially negative pressures?
Does the friction method affect local minor loss in pipes?
Does WaterGEMS and WaterCAD report pressures as gauge pressure or absolute pressure?
Efficiency Curve vs. Wire-to-Water Efficiency Curve
Error importing a LandXML file from StormCAD into Civil 3D "A pipe or conduit had an unsupported geometry"
Error message when validating model: "Elevation (Relative) values within the Irregular shape definition must be non-negative."
Error message: "Unrecognized database format ..." when trying to open model
Error Saving: "Custom results path is invalid"
Find if pump operates off of the pump curve during an automated fire flow scenario
Flow arrows are not included in an exported DGN file when using the Save Symbology option in the MicroStation platform
Flow from pump is delayed after pump startup
GeoPak - StormCAD errors - GEOPAK runtime environment not found / Error writing GEOPAK/PowerCivil node
HEC-22 2nd edition energy loss calculations with the Implicit solver
How are "pipe sets" and "nodes of interest" used in a flushing analysis to get auxiliary results at other elements?
How can I see the amount of inflow or outflow occuring for a particular surge tank during the transient simulation in HAMMER?
How do I filter a column in my flextable using a custom query that retrieves all records with a <None> attribute?
How do I know if and when my pond is overtopping and how to quantify it?
How do I save my model files when working in the ArcMap or ArcGIS Pro platform?
How do the channel slopes and velocity effect the headloss formulas in SewerCAD and StormCAD?
How does StormCAD handle gutter flow from an active catch basin to an inactive catch basin?
How does the diameter of an isolation valve effect the calculated results?
How to add comments on custom pump and turbine quadrant curves
How to find volume of water coming from a trace element?
How to open a .PRNX report file created on exporting custom report in OpenFlows product
Hydropneumatic tank atmospheric pressure not changing results
Hydropneumatic tank profile animation and time history shows zero gas volume
Initial surge when using turbine load acceptance operating case
Initial turbine HGL the same as the final HGL after load acceptance
Irregular Weir Flow Calculations in a Composite Outlet Structure
Is it possible to create old PondPack style text reports?
Is it possible to have a storm event start at a different time than the model simulation?
Is it possible to use point cloud information to populate elevations in Terrain Extractor (TRex)?
Is there a recommended level of Skelebration for different modeling conditions?
Junctions are created on top of one another after using ModelBuilder with the GIS-ID property
Learning Resource Guide for WaterSight
License usage in the ArcMap and ArcGIS Pro platform
LoadBuilder applying demands or loads to inactive elements
LoadBuilder importing zero flow loads
Long time to load background layers
Manage Pump Speed Series
Manage Pump Time Series
Managing large number of scenarios
Missing Young's Modulus and Poisson's Ratio values in the material library
Modeling Arch section shapes in SewerGEMS
Modeling closed or pressurized pipes in PondPack
Modeling treatment for pollutants at nodes or ponds in SewerGEMS and CivilStorm
MrSid files are not available as a background layer type or an error is generated when loading MrSid files
OpenFlows Academic Books
Pipe Renewal Planner Vs OpenFlows WaterCAP
Pipes connecting to the wrong element after submodel import
Pipes not merging when using Skelebrator with series pipe merging
PondPack error: Unable to open user roster
Problems opening GEOPAK Drainage file exported from StormCAD
Query, alert or formula UDX not working correctly with "=" (equals)
SCADAConnect in SewerGEMS
SCADAConnect Simulator in WaterCAD and WaterGEMS V8i SELECTseries 5
Series Pipe Merging in Skelebrator not working for pipes with zero diameter
Small difference in gutter worksheet result between US and SI units
The concentration at the stop node directly after a constituent source in a tank is decreasing rapidly
The control symbol, check valve symbol, and dashed lines connecting customer meters, isolation valves, and SCADA elements are not visible in the ArcMap or ArcGIS Pro platforms
The headloss in a pipe downstream of a parallel VSP is higher than expected
The result field "Depth (Flooding)" is listed as N/A after computing a model with the SWMM engine. Is there a way to see the depth of flooding for a node?
Translated version still showing as English
Troubleshooting making a SCADA connection to Oracle database
Troubleshooting ModelBuilder issues and errors connecting to an Oracle database
User Data Extension not appearing in the Post-Calculation Processor's "Output Property" field
User Data Extensions in the Fireflow report
User Notification "More than one VSPB cannot control the same control node"
User notification when computing: IDF data is not supported by SWMM. Storm event is excluded from export.
User notification: "Conduit has a Stop control structure, but this is not supported next to the connected outfall element."
User notification: "Transition from CONCENTRATED to EXTENDED"
Using Imperial and Metric Hydro International Vortex Valves
Using US Survey feet
Warning about outlet hydrograph not cresting
WaterGEMS and WaterCAD Data Import FAQ
WaterSight - Pump Overview
What can I do to speed it up a file I need to extract elevations from is taking a long time to process in TRex?
What does Entrance Control mean?
What is the best way to model an orifice plate inside a catchbasin with surface storage above the catchbasin rim?
What is the difference between a stand pipe and an inlet box?
What is the purpose the Rainfall File, Runoff File, and RDII File in the Calculations Options?
What is the workflow for setting up pre and postdeveloped conditions for multiple return events?
What kind of demands should be used as the initial conditions of a transient simulation?
What's new in HAMMER V8i SELECTseries 6?
When running a query, why is it not picking up the elements that it should?
Why are there 2 entries for the same alternative in the dropdown menu in the properties of a scenario? One with an "i" and one without it.
Why are there so many extra element types listed for WaterGEMS and WaterCAD, such as surge tank, rupture disk, Periodic head-flow?
Why do I get a warning message about the rational method being used for the modified rational method?
Will SCADA Results Publishing work with only OPC sources?
Troubleshooting unstable SewerGEMS and CivilStorm results using the implicit solver
Wed, May 25 2022 11:33 AM
Tue, Aug 31 2021 9:18 AM
Tue, Jan 19 2021 4:06 PM
Mon, Nov 23 2020 10:01 AM
Mon, Aug 13 2018 11:34 AM
Mon, Jul 3 2017 11:32 AM
Tue, Feb 14 2017 4:10 PM
Sat, Feb 11 2017 8:31 AM
Wed, Feb 1 2017 9:33 AM
Fri, Dec 16 2016 11:01 AM
Fri, Dec 16 2016 11:00 AM
View current version
Secure File Upload
Support and Services
Subscription Services Portal
Training and Learning
About Bentley Institute
My Learning History
© 2021 Bentley Systems, Incorporated