With OpenFlows Work Suite, you can confidently plan, design, and operate water systems of any complexity. OpenFlows technologies combine real-time intelligence with spatial analytics, delivering visibility and insights to ensure optimal real-world outcomes. Make well-informed decisions in every part of the asset lifecycle: Master planning, Capital planning, Detailed design, Real-time monitoring and prediction, Emergency response, Maintenance planning. Apply OpenFlows solutions to a wide array of water-related processes, including water distribution and analysis, sanitary and combined sewer management, and flood risk assessment and mitigation.

One of our most popular products is OpenFlows WaterGEMS, our water modeling solution. OpenFlows WaterGEMS provides you with a comprehensive and easy-to-use decision-support tool for water distribution networks. The software helps improve your knowledge of how infrastructure behaves as a system, how it reacts to operational strategies, and how it should grow as population and demands increase.

From fire flow and water quality simulations, to criticality and energy cost analysis, OpenFlows WaterGEMS has everything you need in a flexible multiplatform environment.

OpenFlows WaterGEMS provides numerous software capabilities for:

Intelligent planning for system reliability: The capability of the water network to adequately serve its customers must be evaluated whenever system growth is anticipated. With OpenFlows WaterGEMS, effectively identify potential problem areas, accommodate service area growth, and plan capital improvements.

Optimized operations for system efficiency: Realistically modeling the operation of complex water systems can be difficult. With OpenFlows WaterGEMS, model pumps accurately, optimize pumping strategies, and plan shutdowns and routine operations to minimize disruption.

Reliable asset renewal decision support for system sustainability: When it comes time to renew or replace your water infrastructure, the amount of asset-related information you must consider can be overwhelming. OpenFlows WaterGEMS capabilities such as Pipe Renewal Planner makes the task much easier by analyzing and comparing a wide range of variables to prioritize renewal decisions.


With OpenFlows WaterGEMS, you can work across CAD, GIS, and stand-alone platforms while accessing a single, shared project data source.

OpenFlows WaterGEMS is a hydraulic modeling application for water distribution systems with advanced interoperability, geospatial model building, optimization, and asset management capabilities.

You can use OpenFlows WaterCAD out of the box or as a stand-alone application or access it from within AutoCAD (as an additional integration option). Regardless of the platform, OpenFlows WaterCAD maintains a single set of modeling files for true interoperability across platforms. The stand-alone interface offers unparalleled versatility with easy-to-use model layout tools, multiple background support, conversion utilities from CAD, GIS, and databases, and unlimited undo and redo layout.

HAMMER uses the Method of Characteristics (MOC) – the benchmark standard for hydraulic transient flow analysis. The MOC computes results at intermediate points along the pipeline, accurately capturing critical outcomes (such as mid-pipe negative pressures) that could otherwise be overlooked.

Superior interoperability. With OpenFlows SewerGEMS, utilities and consultants can model from within several platforms while accessing a single, shared project data source.

The robust OpenFlows PondPack analysis engine computes outlet rating curves with tailwater effects, accounts for pond infiltration, calculates pond detention times, analyzes channels, and performs interconnected pond routing with divergent (multiple) outfalls.

You can use OpenFlows StormCAD as a stand-alone application, or you can work directly within MicroStation® CONNECT Edition, OpenRoads™, OpenSite®, or OpenRail™ Designer, while an additional integration option lets users model directly in AutoCAD. OpenFlows StormCAD’s stand-alone interface offers easy-to-use model layout tools, multiple background support, including Bing aerial imagery, conversion utilities from CAD, GIS, and databases, and the use of terrain models to dynamically update node ground elevations, display surface contours and profiles, and design conduit inverts using real topography.

OpenFlows CivilStorm performs comprehensive analysis of all aspects of stormwater systems, including rainfall, runoff, inlet capture and bypass, gravity and pressure piping, ponds, outlet structures, open channels, culverts, and more. Engineers can analyze pressure and free-surface flow conditions for networks of channels and closed conduits, model complex pond outlets for a variety of tailwater conditions, and use weirs, orifices, culverts, risers, and inlet boxes in their design, all within a single product.

OpenFlows FLOOD is a complete flood modeling application that helps you understand and mitigate flood risks in urban, riverine, and coastal systems.

Data entry and manipulation is flexible and straightforward. Users of OpenFlows CulvertMaster can simply enter data in clearly labeled fields with full context-sensitive assistance and the ability to click to calculate. Design and analysis models can be navigated quickly, using tabbed dialog worksheets to edit watershed data, tailwater conditions, profile information, and more. With OpenFlows CulvertMaster, engineers can conveniently organize all the designs and analyses for the same project within a single file.

With OpenFlows FlowMaster, engineers can solve for any unknown property, design for any desired characteristic, and produce detailed reports and rating curves on the fly. OpenFlows FlowMaster’s flexible interface lets users work on multiple projects simultaneously, organize their worksheets in folders, and save them for future use. The software also enables users to configure toolbars and dock windows to create work environments that match their workflows.


Bentley Systems

685 Stockton Drive

Exton, PA 19341



  • The water system for Guwahati, the largest city in the northeastern region of India, was originally built to harness the Brahmaputra River with a gravity-based distribution system. Unregulated development led to water supply problems, as well as high water pressure in 60% of the system. To improve water distribution and the quality of life for residents, NJS Engineers India was tasked with constructing or upgrading water infrastructure throughout the city, including 36 kilometers of transmission mains, 1,155 kilometers of distribution pipes, 1.42 million service connections, a treatment plant, pumping stations, and other infrastructure. Due to the size of the project, NJS needed to combine design, construction management, and hydraulic models into a single platform.

  • Situated on the banks of the Brahmaputra River, Dibrugarh is a major city in Assam, India, and an emerging industrial, educational, and health care center in the region. Despite its riverside location, the town has no centralized potable water supply facility for the 25,391 households, home to 167,733 people. Given the unreliable, inequitable water supply and highly compromised water quality, the government initiated a water infrastructure project to ensure adequate distribution and 24x7 access to clean drinking water. The USD 25 million initiative includes engineering, procurement, and construction of a 220-kilometer integrated water network. DTK Hydronet was hired as the engineering consultant and faced coordination and engineering challenges while working with the contractor and utility, as well as addressing non-revenue water (NRW) concerns.

  • Within the São Paulo metropolitan area, the city of Diadema in Brazil comprises 400,000 residents. Supplying water to 28.8 million people and treating and collecting sewage for 23.2 million people, Sabesp – Companhia de Saneamento Básico do Estado de São Paulo provides water and collects and treats sewage for 366 cities in the state of São Paulo, Brazil.

  • Bentley’s water solutions helped build a unified management program to access data in the field, producing operation gains of 25%.


  • Water distribution systems supply communities with the vital service of water. Composed of pipes, pumps, valves, and reservoirs, these systems are designed to deliver water at adequate pressures and volume, meeting comprehensive quality standards.

  • Trying to describe how Bentley’s OpenFlows WaterGEMS (and OpenFlows WaterCAD®) can help a water system engineer or operator can be difficult. Users need to think of the software not as tool, but rather a toolbox comprised of advanced hydraulic analysis capabilities. Depending on the problem you need to solve, it could be deployed as a means to size pipes, select pumps, identify pressure zone or district meter area (DMA) boundaries, predict chlorine residuals, or plan flushing operations.


  • Unlock Hidden Savings: A Guide For Growing Water Utilities

    Water distribution systems supply communities with the vital service of water. Composed of pipes, pumps, valves, and reservoirs, these systems are designed to deliver water at adequate pressures and volume, meeting comprehensive quality standards.