Instant flood risk modelling (Inform) tool for co-design of flood risk management strategies with stakeholders in Can Tho city, Vietnam

Journal article (2021)

Authors

Q.H. Ngo Hydraulic Structures and Flood Risk - CEG , IHE Delft Institute for Water Education
Mohanasundar Radhakrishnan IHE Delft Institute for Water Education
Roshanka Ranasinghe University of Twente, IHE Delft Institute for Water Education, Deltares
Assela Pathirana IHE Delft Institute for Water Education
Chris Zevenbergen IHE Delft Institute for Water Education, Urban Design - Architecture and the Built Environment , Hydraulic Structures and Flood Risk - CEG
C. Zevenbergen IHE Delft Institute for Water Education, Urban Design - Architecture and the Built Environment , Hydraulic Structures and Flood Risk - CEG
Research Group
Hydraulic Structures and Flood Risk (CEG) (TU Delft)
Copyright: © 2021 Q.H. Ngo, Mohanasundar Radhakrishnan, Roshanka Ranasinghe, Assela Pathirana, C. Zevenbergen
DOI: https://doi.org/10.3390/w13213131
More Info
expand_more

Published Date

2021

Language

English

Faculty

Civil Engineering & Geosciences

Department

Hydraulic Engineering

Research Group

Hydraulic Structures and Flood Risk

Abstract

Flood risk reduction strategies play an important role in flood risk management (FRM) and these strategies are being co-designed with the engagement of the stakeholder through multiple consultations and co-designing sessions. Effective participation of stakeholders in interactive work sessions requires fast and accurate modeling systems with a user-friendly interface, which can simulate the impact due to various flood reduction measures selected by the stakeholders and also generate outputs that can be understood by all stakeholders, especially those who are not FRM specialists. Presenting an easy-to-understand tool with easy inputs and outputs for a variety of stakeholders and at the same time providing reliable and accurate results for a range of scenarios and interventions is a challenge. Seven requirements that are essential for a user-friendly flood risk tool were used to develop an instant flood risk modeling tool. This paper presents a web-based hydraulic tool, i.e., instant flood risk model (Inform), to support FRM in the urban center of Can Tho city (Ninh Kieu district), Mekong Delta, Vietnam. Inform was developed based on (i) a simplified 1D model for the entire Mekong Delta; and (ii) flood hazard and damage maps, and estimated flood damage for Ninh Kieu district in Can Tho city obtained directly from the 1D/2D coupled model for Ninh Kieu district. Inform rapidly generates flood levels, flood hazard and damage maps, estimated damages. Pilot testing with experts confirmed that Inform qualifies as a reliable co-design tool for developing FRM strategies as it features an inbuilt input library, comprises flexible options, easy to use, produces quick results and has a user-friendly interface. With the help of an interactive web-based tool such as Inform presented here, it is possible to co-design FRM strategies for Can Tho or any other city that is subject to flood risk.