QGISRed is a freeware QGIS plugin developed to assist in building and analyzing hydraulic models of water distribution networks of any complexity, up to the level of detail required by Digital Twins.
The plugin works seamlessly with QGIS, enabling users to georeference network elements, use geographic background layers, edit graphical and alphanumeric data, apply geoprocessing tools, visualize data by layers and customize symbology.
QGISRed relies on an easy-to-use relational database of SHP and DBF files based on the EPANET data model, extended with additional capabilities. Starting from the EPANET data model significantly reduces the learning curve.
QGISRed provides numerous tools to build hydraulic models, manage demand scenarios and analyze results without needing advanced QGIS knowledge:

- Project manager for easy project loading and storage
- Automatic creation of new empty projects
- Project backup creation
- Import/export EPANET INP files
- Import network components from Shapefiles and Digital Twin elements (service connections, isolation valves, sensors)
- Automatic generation of topological relationships
- Full graphical editing tools (add, delete, move, edit vertices/nodes, reverse links, multi-selection)
- Network layout debugging and connectivity verification
- Default values for newly created elements
- Property editor for model and Digital Twin attributes
- Analysis options and defaults editor
- Automatic pipe length calculation
- Elevation interpolation from DTM
- Roughness estimation from pipe material and age
- Roughness coefficient conversion between formulas and units
- Visualization of multiple demands and quality sources
- Automatic nodal demand allocation
- Multi-category demand scenario management
- Scenario builder (import/export)
- Editors for curves, patterns, controls and rules
- Model validation tools
- Service connection and isolation valve management
- Detection of isolated zones
- Optional integration of service connections
- Sensor declaration and signal association
- Field data import/export
- Automatic identification of hydraulic sectors
- Simulation using EPANET toolkit 2.3
- Visualization of results (tables, color-coded layers, arrows, labels)
- Automatic legend generation
- Simulation navigation bar

QGISRed also includes tools to detect editing errors and fill missing information before simulation.

Development initiative of the REDHISP Research Group, IIAMA (UPV, Spain), led by Prof. Fernando Martínez Alzamora. Implemented until 2022 by WaterPi under the direction of Néstor Lerma, PhD Eng.

QGISRed updates the former GISRed application for ArcView 3.1. The GISRed name remains for the .NET core libraries used by QGISRed.

Related urls:
Website: https://qgisred.upv.es
Plugin repository page: https://plugins.qgis.org/plugins/QGISRed/
User Manual (EN): https://qgisred.webs.upv.es/files/manuals/QGISRed_0.17_usermanual_en.pdf
User Manual (ES): https://qgisred.webs.upv.es/files/manuals/QGISRed_0.17_usermanual_es.pdf

Requirements: .NET Framework 4.5 - Windows OS