Urban Flood Modeling and Drainage Systems

Urban flood modelling integrates the physics of rainfall–runoff transformation with hydraulic simulation of surface and sub-surface flows to support flood risk management, infrastructure design and emergency forecasting. As cities expand, impermeable surfaces amplify runoff volumes and peak discharges, while ageing drainage networks often struggle to convey extreme stormwater. Advances in high-resolution terrain mapping, remote sensing rainfall inputs and crowdsourced incident reports have enabled more accurate representation of urban micro-features and flow pathways. Modern computational frameworks increasingly couple one-dimensional sewer network models with two-dimensional overland flow solvers, leveraging parallel computing and cloud platforms to balance fidelity with runtime demands. Concurrently, artificial intelligence and machine learning are being applied to parameter estimation and uncertainty quantification, enhancing the adaptability of models to diverse urban settings. Such integrated approaches inform the planning of dual drainage schemes, green infrastructure and adaptive mitigation strategies, underpinning resilient urban development in a changing climate.

Research from Nature Portfolio

No recent Nature Portfolio content available.

Urban Flood Modeling and Drainage Systems publication trend

The graph below shows the total number of articles in urban flood modeling and drainage systems across all publications each year (not limited to Nature Index journals).

Technical terms

Hydrological-hydraulic model: An integrated representation of rainfall–runoff processes and fluid dynamics used to predict water movement across and through urban catchments.

Dual drainage approach: A modelling strategy that concurrently simulates surface overland flow and subsurface sewer network dynamics to capture interactions during pluvial flooding.

Shallow water equations: A set of partial differential equations that govern depth-averaged fluid flow, often simplified for urban inundation modelling contexts.

Cellular automata: A computational technique that uses discrete grid cells and simple neighbourhood rules to simulate complex surface water movement patterns.

1D-2D coupling: The integration of one-dimensional pipe flow models with two-dimensional surface flow models to achieve realistic simulations of urban flood events.

References

1. A review of recent advances in urban flood research. Water Security (2023).
2. Urban hydrological model (UHM) developed for an urban flash flood simulation and analysis of the flood intensity sensitivity to urbanization. Geomatics Natural Hazards and Risk (2024).
3. An integrated framework for high-resolution urban flood modelling considering multiple information sources and urban features. Environmental Modelling & Software (2018).