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Water Gems

Water Gems

Water Distribution Analysis and Design Software

Deliver High-Quality Hydraulic Projects with Minimal Capital Investment
The most flexible and comprehensive solution for water systems engineering, planning, and operations.

A perpetual license allows you to use an app for an unlimited amount of time. It can be accompanied by the SELECT assistance contract.


OpenFlows WaterGEMS provides you with a comprehensive yet 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 is a superset of OpenFlows WaterCAD.

Intelligent Planning

Efficiently identify potential problems, accommodate service area growth, and plan/prioritize capital improvement projects by using criticality analysis, DMA planning, and pressure management tools to identify potential projects.

Optimized Operations

Use real-time data to analyze energy use and costs, maximize operational efficiencies, minimize disruptions, and intelligently respond to emergencies.

Build and Update Models Faster

Intuitive to use so you can easily jumpstart your modeling process with geospatial data, CAD drawings, databases, and spreadsheets. Apply automated calibration, leak detection, design, rehabilitation, and pump operations.

Identify Water Loss

Use field data to quantify nonrevenue water and help pinpoint loss locations faster.

Assess Fire Flow Capacity

Use automated workflows to access and identify inadequacies in fire protection.

Analyze, design, and optimize your water distribution systems

A hydraulic modeling application, WaterGEMS provides an easy-to-use environment for you to confidently analyze, design, and optimize your water distribution systems. With advanced interoperability, geospatial model building, optimization, and asset management capabilities, WaterGEMS supports your engineering workflows from fire flow and water quality analysis, to energy consumption and capital cost management.

Streamlined model building with superior interoperability

You can leverage geospatial data, CAD drawings, databases, and spreadsheets to jumpstart the model building process and model directly within ArcGIS and ArcGIS Pro. WaterGEMS provides synchronized database connections, geospatial links, and advanced model-building modules that connect with virtually any digital data format. WaterGEMS includes LoadBuilder and TRex modules to help you allocate water demands and node elevations based on geospatial data found in shapefiles, geodatabases, various types of DEMs, and even CAD drawings. These modules help you avoid potential manual-input mistakes. WaterGEMS also provides drawing and connectivity review tools to guarantee a hydraulically coherent model. Skelebrator automatically removes network complexity, while maintaining hydraulic equivalence, to efficiently tackle a wider range of modeling applications.

Optimized model calibration, design, and operations

WaterGEMS includes state-of-the-art genetic algorithm optimization engines for automated calibration, leak detection, design and rehabilitation, and pump operations. Darwin Calibrator evaluates millions of possible solutions to let you quickly find a calibration hypothesis that best matches measured flows, pressures, and on/off status, empowering users to make reliable decisions based on accurate hydraulic simulations of the real world. Another application is to support active leak detection activities, by identifying the most likely locations of leakage in your network.

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