Efficient management of the integrated water cycle requires advanced digital tools capable of centrally integrating, analyzing, and optimizing hydraulic, operational, and territorial information. In this context, Giswater 4 represents a qualitative leap in the digitalization of water services, incorporating substantial improvements in its architecture, interoperability, and analytical capabilities. This work presents the implementation and adaptation of Giswater 4 within the framework of the PERTE project (Strategic Projects for Economic Recovery and Transformation) for the digitalization of the water cycle at Aigues de Manresa. Version 4 introduces a more robust and intuitive interface, greater integration with other platforms through the development of a REST API, and enhanced capacity to work with hydraulic digital twins. Additionally, it includes new functionalities aimed at advanced management of water supply and sanitation networks, such as traceability analysis, scenario evaluation, leak detection, and prioritization of infrastructure investments.

The IBERGIS platform integrates the 1D/2D hydrodynamic model of IBER and the SWMM urban drainage model into a single GIS environment inside QGIS, enabling an efficient workflow for urban flood analysis. Using a coupled 1D/2D approach, both the drainage network and the surface runoff are modelled, with depths, velocity, water elevation and extents obtained as outputs, which can be visualised directly from the GIS interface. This integration enables rapid interpretation of critical areas and automated post-processing without external tools. These results demonstrate how GIS-based flood modelling can support urban planning and climate adaptation decisions. The applied case of Manresa provides a replicable workflow for municipalities seeking to enhance urban resilience through spatially integrated hydraulic modelling.