A Coupled River Basin‐Urban Hydrological Model (DRIVE‐Urban) for Real‐Time Urban Flood Modeling

Abstract

Reliable urban flood modeling is highly demanded in emergency response, risk management, and urban planning related to urban flooding. In this paper, the Storm Water Management Model (SWMM) is adapted to simulate urban rainfall‐runoff and pipe drainage processes within the Dominant river tracing‐Routing Integrated with VIC Environment (DRIVE) model which accounts for natural river basin runoff generation and routing processes. The integrated DRIVE‐SWMM model (referred to as DRIVE‐Urban) allows to explicitly delineate the mass‐energy interactions between urban drainage system (e.g., pipes and dikes) and river networks. This presents a further step model development for accurate urban flooding prediction which is lacking in existing urban flood models and traditional hydrological models. The validity of the DRIVE‐Urban model is evaluated for three case studies in Haikou City, China, with camera observations of street inundation during typhoon landfalls and heavy rainfall events. The results show that the DRIVE‐Urban model successfully captures 62%, 69%, and 77% of the total observed inundated road‐sections for the three cases respectively. The third case study with severe flooding situation shows that the DRIVE‐Urban performance is further improved when given reliable river and tidal level information, indicating the importance of integrating river‐basin with urban hydrological and hydraulic modeling.

Urban inundation forecasting based on hydraulic models coupling MIKE Flood and MIKE Urban: A case study of Tam Ky City, Vietnam

“…Forecasting urban inundation has emerged as a significant trend in recent times (Chen et al, 2022; Eldho et al, 2018). However, this task is complex as it is affected not only by such triggers as urban rainfall or river flood water levels (Bisht et al, 2016; Chen et al, 2022), but also by the characteristics of the drainage system and urban topography (Eldho et al, 2018). In this study, a hydraulic model was developed by integrating water body and urban data, effectively connecting the river basin and urban hydrological systems.…”

“…Urban inundation is a critical issue with significant adverse impacts on both the economy and the environment, as highlighted in several prior studies (Chen et al, 2022;Eldho et al, 2018;Luo et al, 2018). This phenonmenon poses a major challenge for many cities in central Vietnam.…”

Impact of Soil Moisture Dynamics and Precipitation Pattern on UK Urban Pluvial Flood Hazards Under Climate Change

“…A comprehensive investigation of regional and seasonal flood impacts in a global warming world is therefore still lacking, particularly for urban catchments where there may be large impacts from flooding in terms of economic losses. Currently, most urban flood risk assessment under global warming focuses on single storm events of a particular return period, either estimated with an intensity‐duration‐frequency (IDF) curve representing the precipitation field or using a real‐world flooding event (Chen et al., 2022; Hettiarachchi et al., 2018; Lin et al., 2020). Changes in rainfall spatial distributions and antecedent moisture status over extended periods of time due to climate change have so far been ignored when assessing urban pluvial flood risk (e.g., Hettiarachchi et al., 2019; Luo et al., 2022).…”

Multi-source data-driven estimation of maximum carrying capacity of urban water storage facilities under extreme conditions

“…Literature [20], based on experimental and theoretical Analysis, proposed a unified formula for calculating the discharge volume of street inlets and constructed experiments to analyze and validate the formula, which showed good prediction accuracy and can be used for numerical estimation and risk management of urban flooding. Literature [21] combines the Storm Water Management Model (SWMM) with the VIC Environment (DRIVE) model to simulate the urban rainfall-runoff and pipe drainage process under the dominant river tracking path. The feasibility of the proposed method is confirmed by numerical tests on real cases, demonstrating the importance of combining watershed and urban hydrological and hydraulic modeling.…”