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The Special Issue on Advances in Modeling and Management of Urban Water Networks (UWNs) explores four important topics of research in the context of UWNs: asset management, modeling of demand and hydraulics, energy recovery, and pipe burst identification and leakage reduction. In the first topic, the multi-objective optimization of interventions on the network is presented to find trade-off solutions between costs and efficiency. In the second topic, methodologies are presented to simulate and predict demand and to simulate network behavior in emergency scenarios. In the third topic, a methodology is presented for the multi-objective optimization of pump-as-turbine (PAT) installation sites in transmission mains. In the fourth topic, methodologies for pipe burst identification and leakage reduction are presented. As for the urban drainage systems (UDSs), the two explored topics are asset management, with a system upgrade to reduce flooding, and modeling of flow and water quality, with analyses on the transition from surface to pressurized flow, impact of water use reduction on the operation of UDSs, and sediment transport in pressurized pipes. The Special Issue also includes one paper dealing with the hydraulic modeling of an urban river with a complex cross-section.

drainage network --- climate change --- rehabilitation --- optimization --- SWMM --- drainage networks --- flooding --- multi-objective optimization --- water network partition --- genetic algorithm --- hydraulic --- water quality --- actions --- asset management --- ANN --- prediction --- performance --- water utility --- water system --- NSGA-II --- GIS modeling --- leakage management --- urban water network management --- valve closing algorithm --- web 2.0 --- total suspended solids --- in-situ --- erosion --- sedimentation --- pressure pipe --- sewage --- water distribution systems --- pipe bursts --- hydraulic transients --- real-time control --- machine learning --- sediment transport model --- numerical simulation --- advection-dispersion equation --- water distribution networks --- transmission mains --- pump as turbine --- energy recovery --- hydropower --- multi-objective --- water consumption --- chaos theory --- local approximation --- Kelowna --- gene expression programming --- trapezoidal stretch --- transition stretch --- culvert --- open channel --- hydraulic factors --- sewer design --- stochastic sewer modelling --- wastewater quality --- household discharge --- reduced water consumption --- flow regime transition --- finite volume methods --- numerical oscillations --- numerical viscosity --- Preissmann slot model --- hydraulic simulation --- water demand --- emergency scenario --- intermittent water supply --- water management --- WaterGEMS software --- pressure control --- leakage reduction strategies --- water distribution system modeling --- urban drainage system modeling --- emergency scenarios --- leakage --- demand --- energy --- sediment transport