Advanced tools for sanitary and combined sewer models

SewerGEMS is an easy-to-use advanced engineering software for you to analyze, design, and operate sanitary and combined sewer systems. You can decrease decision risks by ensuring that the model uses the best available data, built-in hydraulic and hydrology capabilities, and a variety of wet-weather calibration methods. Easily create what-if scenarios to gain a better understanding of wastewater systems to make smarter decisions, and you can improve your response times.  SCADA integration provides you with reliable model results, improves capacity and limits sewer overflows. This enables you to comply with sewer regulations set by regulatory agencies.

SewerGEMS

Work in multiple platforms

Flatten learning curves by choosing the environment that works best for you. With superior interoperability, SewerGEMS helps users get results that can be visualized on multiple platforms. You can choose from these platforms:

  • Windows standalone for ease of use, accessibility, and performance
  • ArcGIS for GIS integration, thematic mapping, and publishing
  • MicroStation for bridging geospatial planning and engineering design environments
  • OpenRoads Designer, OpenSite Designer, and OpenRail Designer for a comprehensive 3D modeling solution
  • AutoCAD for convenient CAD layout and drafting
Sewer modeling software

Jumpstart the model building process

Leverage geospatial data, CAD drawings, SCADA data, databases, and spreadsheets to quickly kickstart modeling building processes. Easily connect with virtually any digital data format and synchronize database connections, geospatial links, and advanced model-building modules. And guarantee a hydraulically coherent model using the drawing and connectivity review capabilities.

Sewer modeling software screenshot

Easy model management with scenarios

Evaluate design, operational, sanitary loading, and network topology strategies for better decision-making support. Configure, evaluate, visualize, and compare an unlimited number of scenarios within a single file using the Scenario Management Center.

Sewer modeling software for OpenFlows product

Perform advanced analysis

Model the effect that low impact development controls have in retaining runoff before it enters the sewer system. Model hydrogen sulfide formation, with a view to decreasing the risk of pipe damage from H2S formation, preventing odor complaints, and improving workers’ safety.

Testimonial_Quote_Marks
“Using Bentley's WaterGEMS, we are able to come up with the right design for our water system ... and we could maintain an affordable water supply, which we commit to provide in our concessionaire.”

Technical Capabilities

Interface and Graphical Editing

  • Standalone Windows interface included
  • Dynamic elevation updates from terrain models
  • Ribbon interface improves usability
  • Ability to run within
    • ArcGIS (ArcMap license required)
    • AutoCAD (license required)
    • MicroStation (license required)
    • OpenRoads Designer, OpenSite Designer, and OpenRail Designer (licenses required)
  • Unlimited undo/redo of layout and editing
  • Element morphing, splitting, and reconnection
  • Merge nodes in close proximity tool
  • Automatic element labeling
  • Scaled, schematic, and hybrid environments
  • Element prototypes (one-click setup)
  • Dynamic zooming
  • Multiple background file support
  • Image, CAD, and GIS background layer support
  • Ability to add online Bing Maps as background
  • Automatic input and result fields filtering (based on solver used)

Interoperability and Model Building

  • Single set of model files for all compatible interfaces
  • Import/export of InRoads Storm and Sanitary files
  • Import of MX Drainage files
  • Automated catchment delineation
  • Shapefile, Geodatabase, Geometric Network, and SDE support
  • Polyline-to-pipe conversion from DXF and DWG files
  • Oracle Locator and Oracle Spatial data connection
  • GIS-ID property (to maintain associations between records in source file and elements in model)
  • Automatic catchment delineation
  • SCADAConnect for live data connections (from SCADA systems)
  • Seed files (new model template)
  • Spreadsheet, database, shapefile, and ODBC connections
  • Automated assignment of elevation data to manhole elements
  • Unified file format with SewerCAD, CivilStorm, and StormCAD
  • Automatic elevation updates using terrain models

Hydraulics and Operations

  • Two engines for solving the full set of St. Venant equations included
  • Implicit dynamic engine included
  • Explicit dynamic engine included (EPA-SWMM)
  • Energy Cost analysis
  • Gradually varied flow-convex engine included (SewerCAD’s engine)
  • Extended period simulations
  • Steady-state simulations
  • Automatic constraint-based design for sanitary and storm sewers
  • Gradually varied flow-rational engine included (StormCAD’s engine)
  • Peak flow simulations
  • Evaporation definition
  • Long-term continuous simulation
  • HEC-22 inlet capacity calculations
  • HEC-22 node headloss calculations
  • SWMM Culvert Support
  • Tractive Stress calculations
  • Critical Storm analysis
  • Support for V-shaped and parabolic gutters
  • Support for culvert headwalls and endwalls
  • Aquifer simulation
  • Control structures (weirs, orifices, depth-flow curve)
  • Rule-based controls
  • Pollution analysis with optional definition of land use categories and land surface characteristics
  • Variable-speed pumping
  • Flow profile methods: capacity and backwater analysis
  • Totalizing flow meters
  • Air valves for high points in force mains
  • SCADA element
  • Low impact development control analysis
  • Hydrogen sulfide formation modeling

Results Presentation

  • Direct ArcMap visualization and mapping
  • Thematic mapping
  • Dynamic, multi-parameter, and multi-scenario graphing
  • Advanced dynamic profiling
  • Advanced tabular reporting with FlexTables®
  • Property-based color coding and symbology
  • Property-based annotation
  • Publishing of i-models in 2D or 3D, including to Bentley Map Mobile
  • Engineering profile annotation tables
  • Create custom reports
  • Generate AVI files
  • Gutter cross section viewer

Model Management

  • Ability to track model changes by user, date, element, and more
  • Custom data fields (with user-assigned or formula-based values)
  • Unlimited scenarios and alternatives
  • Comprehensive scenario management
  • Scenario comparison
  • Tabular reports global editing
  • Sorting and persistent filtering on tabular reports
  • Statistical analysis from tabular reports
  • Customizable engineering libraries
  • Dynamic and static selection sets
  • Automatic topology review
  • Orphaned node and dead-end pipe queries
  • Sub-model management
  • Surface water flow direction displayed across any terrain
  • Support for ProjectWise

Sanitary Load Allocation and Estimation

  • Automatic sanitary load allocation from geospatial data
  • Geospatial load allocation from billing meters
  • Load allocation using flow monitoring distribution
  • Land use-based load distribution

Stormwater Load Allocation and Estimation

  • Runoff methods: SCS Unit Hydrograph, Modified Rational Method, EPA SWMM, RTK Unit Hydrograph, generic Unit Hydrograph, Time-Area Method, ILSAX and user-defined hydrograph
  • Time of concentration methods: User-defined, Carter, Eagleson, Espey/ Winslow, Federal Aviation Agency, Kerby/Hathaway, Kirpich (PA and TN), Length and Velocity, SCS Lag, TR-55 Sheet Flow, TR-55 Shallow Concentrated Flow, TR-55 Channel Flow, Friend, Kinematic Wave, Bransby-Williams, and UK standard
  • Loss Methods: Constant loss rate, Green and Ampt, Horton, Initial Loss and Constant Fraction, Initial Loss and Constant Loss Rate, SCS Curve Number

PondMaker: Pond Outlet Design

  • Automatic update of worksheet containing design data for multiple design trials of a single pond
  • Multiple pond designs possible
  • Maximum outflow rates establishment (user-defined or pre-development flows)
  • Post-development pond inflows computation
  • Pond size requirements estimation
  • Pond geometry design (grading plan or underground storage)
  • Outlet structure design
  • Pre- and post-development peak flow and volume comparison
  • Hydrograph routing through ponds
Interface and Graphical Editing

Interface and Graphical Editing

  • Standalone Windows interface included
  • Dynamic elevation updates from terrain models
  • Ribbon interface improves usability
  • Ability to run within
    • ArcGIS (ArcMap license required)
    • AutoCAD (license required)
    • MicroStation (license required)
    • OpenRoads Designer, OpenSite Designer, and OpenRail Designer (licenses required)
  • Unlimited undo/redo of layout and editing
  • Element morphing, splitting, and reconnection
  • Merge nodes in close proximity tool
  • Automatic element labeling
  • Scaled, schematic, and hybrid environments
  • Element prototypes (one-click setup)
  • Dynamic zooming
  • Multiple background file support
  • Image, CAD, and GIS background layer support
  • Ability to add online Bing Maps as background
  • Automatic input and result fields filtering (based on solver used)
Interoperability and Model Building

Interoperability and Model Building

  • Single set of model files for all compatible interfaces
  • Import/export of InRoads Storm and Sanitary files
  • Import of MX Drainage files
  • Automated catchment delineation
  • Shapefile, Geodatabase, Geometric Network, and SDE support
  • Polyline-to-pipe conversion from DXF and DWG files
  • Oracle Locator and Oracle Spatial data connection
  • GIS-ID property (to maintain associations between records in source file and elements in model)
  • Automatic catchment delineation
  • SCADAConnect for live data connections (from SCADA systems)
  • Seed files (new model template)
  • Spreadsheet, database, shapefile, and ODBC connections
  • Automated assignment of elevation data to manhole elements
  • Unified file format with SewerCAD, CivilStorm, and StormCAD
  • Automatic elevation updates using terrain models
Hydraulics and Operations

Hydraulics and Operations

  • Two engines for solving the full set of St. Venant equations included
  • Implicit dynamic engine included
  • Explicit dynamic engine included (EPA-SWMM)
  • Energy Cost analysis
  • Gradually varied flow-convex engine included (SewerCAD’s engine)
  • Extended period simulations
  • Steady-state simulations
  • Automatic constraint-based design for sanitary and storm sewers
  • Gradually varied flow-rational engine included (StormCAD’s engine)
  • Peak flow simulations
  • Evaporation definition
  • Long-term continuous simulation
  • HEC-22 inlet capacity calculations
  • HEC-22 node headloss calculations
  • SWMM Culvert Support
  • Tractive Stress calculations
  • Critical Storm analysis
  • Support for V-shaped and parabolic gutters
  • Support for culvert headwalls and endwalls
  • Aquifer simulation
  • Control structures (weirs, orifices, depth-flow curve)
  • Rule-based controls
  • Pollution analysis with optional definition of land use categories and land surface characteristics
  • Variable-speed pumping
  • Flow profile methods: capacity and backwater analysis
  • Totalizing flow meters
  • Air valves for high points in force mains
  • SCADA element
  • Low impact development control analysis
  • Hydrogen sulfide formation modeling
Results Presentation

Results Presentation

  • Direct ArcMap visualization and mapping
  • Thematic mapping
  • Dynamic, multi-parameter, and multi-scenario graphing
  • Advanced dynamic profiling
  • Advanced tabular reporting with FlexTables®
  • Property-based color coding and symbology
  • Property-based annotation
  • Publishing of i-models in 2D or 3D, including to Bentley Map Mobile
  • Engineering profile annotation tables
  • Create custom reports
  • Generate AVI files
  • Gutter cross section viewer
Model Management

Model Management

  • Ability to track model changes by user, date, element, and more
  • Custom data fields (with user-assigned or formula-based values)
  • Unlimited scenarios and alternatives
  • Comprehensive scenario management
  • Scenario comparison
  • Tabular reports global editing
  • Sorting and persistent filtering on tabular reports
  • Statistical analysis from tabular reports
  • Customizable engineering libraries
  • Dynamic and static selection sets
  • Automatic topology review
  • Orphaned node and dead-end pipe queries
  • Sub-model management
  • Surface water flow direction displayed across any terrain
  • Support for ProjectWise
Sanitary Load Allocation and Estimation

Sanitary Load Allocation and Estimation

  • Automatic sanitary load allocation from geospatial data
  • Geospatial load allocation from billing meters
  • Load allocation using flow monitoring distribution
  • Land use-based load distribution
Stormwater Load Allocation and Estimation

Stormwater Load Allocation and Estimation

  • Runoff methods: SCS Unit Hydrograph, Modified Rational Method, EPA SWMM, RTK Unit Hydrograph, generic Unit Hydrograph, Time-Area Method, ILSAX and user-defined hydrograph
  • Time of concentration methods: User-defined, Carter, Eagleson, Espey/ Winslow, Federal Aviation Agency, Kerby/Hathaway, Kirpich (PA and TN), Length and Velocity, SCS Lag, TR-55 Sheet Flow, TR-55 Shallow Concentrated Flow, TR-55 Channel Flow, Friend, Kinematic Wave, Bransby-Williams, and UK standard
  • Loss Methods: Constant loss rate, Green and Ampt, Horton, Initial Loss and Constant Fraction, Initial Loss and Constant Loss Rate, SCS Curve Number
PondMaker: Pond Outlet Design

PondMaker: Pond Outlet Design

  • Automatic update of worksheet containing design data for multiple design trials of a single pond
  • Multiple pond designs possible
  • Maximum outflow rates establishment (user-defined or pre-development flows)
  • Post-development pond inflows computation
  • Pond size requirements estimation
  • Pond geometry design (grading plan or underground storage)
  • Outlet structure design
  • Pre- and post-development peak flow and volume comparison
  • Hydrograph routing through ponds
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We’ve bundled a 12-month license for trusted Bentley software with customizable training from experts and call it our Virtuoso Subscription. With lower upfront costs and flexible support options, businesses of all sizes can now compete with the industry’s heavy hitters.

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Frequently Asked Questions

What is SewerGEMS?

Easy-to-use advanced engineering software, you can use SewerGEMS to analyze, design, and operate sanitary and combined sewer systems. Decrease decision risks by ensuring that the model uses the best available data, built-in hydraulic and hydrology capabilities, and a variety of wet-weather calibration methods. Create what-if scenarios to gain a better understanding of wastewater systems to make smarter decisions and improve your response times.  SCADA integration provides you with reliable model results, improves capacity and limits sewer overflows, which ultimately enable you to comply with sewer regulations set by regulatory agencies.

How much is SewerGEMS?

A practitioner license of OpenFlows SewerGEMS costs $2,544 – $12,731 USD at Virtuosity.com depending on the desired pipes. Prices also vary per region. While there are various types of licensing available, a common choice is the 12-month practitioner license offered through Virtuosity, Bentley’s eCommerce store. When you purchase through Virtuosity you get a Virtuoso Subscription. This means you get the software and “Keys” (tokens) to redeem for customizable training, mentoring, and consulting services.

How do I allocate and estimate wastewater and stormwater loading?

In SewerGEMS, you can assign sewer loads based on a variety of GIS-based sources such as customer water-use billing data, area-wide flow measurement, or polygons with known population or land use. Input and save an unlimited number of flow patterns, to accurately model flow changes over the course of a day. Load models with wet weather runoff flows derived from precipitation, using built-in rainfall distributions, or user-defined rainfall events. Runoff flows are modeled and calibrated using a choice of hydrograph methods, including RTK, SCS, Modified Rational, EPA-SWMM, or user-defined generic unit hydrographs. Users can also load the model based on property connections. Loading can be applied as user-defined hydrographs, pattern-based loads, and unit loads. Access and customize the comprehensive unit (dry weather) load engineering library with numerous typical unit loads based on population, area, count, and discharge.

How do you analyze using multiple solvers in SewerGEMS?

When analyzing, switch among multiple solvers, according to the type of system you are using. To solve the Saint Venant equations, choose between SewerGEMS’ explicit EPA solver based on SWMM and the implicit dynamic wave engine. These two dynamic engines account for storage effects within structures and quantify overflows should they occur. The convex/gradually varied flow solver uses convex routing to determine gravity sewer flows and gradually varied flow (backwater analysis) to determine hydraulic properties once the flow is known. With the rational/gradually varied flow solver, peak flows in the storm sewer system are calculated using the rational method. Use this solver to analyze peak flow conditions, or to automatically design storm sewers.

What is the difference between OpenFlows SewerCAD and SewerGEMS?

SewerGEMS is a superset of Bentley’s solutions for wastewater (SewerCAD) and stormwater (CivilStorm and StormCAD) network analysis and design.

  • SewerGEMS includes a standalone version plus the ability to integrate with three platforms MicroStation, AutoCAD, and ArcGIS. SewerGEMS’ full GIS, CAD, and SCADA interoperability enables the cost-effective sharing and flow of information between utilities’ design, engineering, GIS, and operation departments, and their consultants.
  • SewerCAD has a gradually varied flow engine for steady-state and extended period simulations for system design and rehabilitation that analyzes sanitary sewer networks under peak flow conditions with convex routing hydraulics. SewerGEMS uses a fully dynamic engine to help you accurately model looped networks, flow splits, overflows, and storage capacity. CivilStorm analyzes, designs, and operates stormwater systems. It is a fully dynamic, multi-platform, hydraulic modeling solution developed for the analysis of complex stormwater systems. StormCAD provides calculations for catchment runoff, inlet capacity, and gutters and pipe network flow with rational method peak flows
Do I have to use SewerGEMS inside of ArcGIS?

No. SewerGEMS can be used as a standalone product. Additionally, enjoy the power and versatility of working across multiple applications with superior interoperability. Choose from Windows standalone, ArcGIS for GIS integration, MicroStation, and AutoCAD.

Do I have to purchase functional modules for SewerGEMS?

No. Unlike other platforms, SewerGEMS includes all calculation capabilities.

What is the difference between SewerGEMS and SWMM?

SewerGEMS has an easier to use interface.

System Requirements

Refer to the ‘Installation Requirements’ section of the SewerGEMS ReadMe file.

Platform pre-requirements
SewerGEMS runs without platform restrictions as a standalone application. It also runs from within ArcGIS, AutoCAD, MicroStation, OpenRoads Designer, OpenRail Designer, and OpenSite Designer. The requirements are also available in the SewerGEMS ReadMe file.

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