1. EPANET
EPANET is a software application developed by the US Environmental Protection Agency (EPA) to model the hydraulic and water quality behavior of pressurized pipe networks. It can be used to simulate the flow of water, the pressure at each node, the height of water in each tank, the concentration of a chemical, the age of water, and source tracing throughout the network. EPANET can also model contamination threats and evaluate resilience to security threats or natural disasters. EPANET is public domain software that can be freely copied and distributed.
2. QGIS
QGIS is the most popular geographic information system (GIS) tool with an impressive trajectory and a vibrant community. It has a rich ecosystem of plugins that extend its functionality for various purposes. QGIS is a completely open source alternative that reduces the cost barriers since it does not need a paid license and can be executed in any operating system. QGIS can be used to create, edit, visualize, analyze, and manage spatial data for water network applications.
3. SAGA GIS
SAGA GIS is a GIS platform oriented to spatial analysis. SAGA GIS has a large library of modules focused on spatial analysis and characterization of basins. The interpolation options in SAGA GIS are better implemented than in other free and commercial software. SAGA GIS can be used to perform hydrological modeling, terrain analysis, watershed delineation, and other tasks related to water networks.
4. HEC-RAS
HEC-RAS is a numerical model developed by the US Army Corps of Engineers to simulate the hydraulic behavior of rivers and channels. It can be used to calculate the flow depth, velocities, and flooded zones based on the topography and gradient of the river. It can also model sediment transport and water temperature. HEC-RAS can be used to design and size new water infrastructure, optimize operations of dams and reservoirs, investigate water quality problems, and prepare for emergencies.
5. iRIC
iRIC (International River Interface Cooperative) is a software developed with the purpose of offering a complete simulation environment for riverbeds. It can be used to model the flow dynamics, sediment transport, morphological changes, habitat suitability, and other aspects of river systems. iRIC can also be used to analyze, mitigate, and prevent disasters related to floods, landslides, erosion, and pollution.
6. HEC-HMS
The Hydrologic Modeling System (HEC-HMS) is designed to simulate the hydrologic processes in basins. The software includes traditional procedures of hydrologic analysis, such as infiltration events, unit hydrographs, and routing. HEC-HMS also includes modules for evapotranspiration, snowmelt, soil moisture, and groundwater flow. HEC-HMS can be used to estimate runoff volumes, peak flows, hydrographs, flood frequencies, and water balances.
7. FREEWAT
FREEWAT (FREE and open source software tools for WATer resource management) is a software platform that integrates several tools for groundwater modeling and management. It is based on the MODFLOW family of models, which are widely used for simulating groundwater flow and transport in aquifers. FREEWAT can also handle surface water-groundwater interactions, water quality issues, optimization techniques, scenario analysis, and stakeholder participation.
8. SWMM
The Storm Water Management Model (SWMM) is a software application developed by the EPA to model urban runoff quantity and quality in stormwater systems. It can be used to simulate runoff generation, infiltration, evaporation, surface storage, conveyance, treatment, detention, retention, and outfall discharges. SWMM can also model green infrastructure practices such as rain barrels, green roofs, permeable pavements, and bioretention cells.
9. GRASS GIS
GRASS GIS (Geographic Resources Analysis Support System) is a powerful and versatile GIS software that can handle raster, vector, and point data. It has over 400 modules for spatial analysis, image processing, geostatistics, network analysis, and more. GRASS GIS can be used to perform hydrological modeling, watershed analysis, flood mapping, erosion modeling, and other water network applications.
10. OpenFOAM
OpenFOAM (Open source Field Operation And Manipulation) is a software toolkit for computational fluid dynamics (CFD). It can be used to model the flow of fluids and gases in complex geometries and under various conditions. OpenFOAM can also solve equations for heat transfer, turbulence, multiphase flow, chemical reactions, and more. OpenFOAM can be used to simulate water flow in pipes, channels, reservoirs, turbines, pumps, and other water network components.
11. Python
Python is a popular programming language for scientific, water resources, and environmental analysis. It has several packages for different tools such as GIS, mathematical analysis, and artificial intelligence. Python can be used to manipulate, process, and plot data, as well as to create custom models and applications for water network problems.
These are some of the best free software tools for water network applications. They can help water professionals to perform various tasks related to water network modeling, analysis, design, and management. By using these tools, water professionals can save money, improve transparency, and enhance their skills.
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