A study on the application of computational models as support tools in urban flood management along the Cai Nai river in Can Tho city

Abstract

Urbanization processes often lead to flooding issues, hindering the development of cities in Vietnam. For cities undergoing planning, initial solutions are crucial. To avoid replicating old urban structures, lacking green spaces, and missing water retention systems, this paper applies Low Impact Development (LID) solutions within the Storm Water Management Model (SWMM) framework for flood management in the new urban area along the Cai Nai River, located in the new residential area of Hung Thanh ward, Cai Rang district, Can Tho city. The integration of SWMM with LID serves as a useful tool towards sustainable urban development, aiming for a more modern and intelligent city. This tool helps managers and investors save costs and time in selecting suitable solutions tailored to the planning characteristics of the study area, ensuring effectiveness during implementation. The paper proposes constructing two scenarios: Current status and planned; comparing flow rates before and after urbanization for a major rainfall event on April 2, 2023. Subsequently, LID solutions are introduced and evaluated for effectiveness through each calculated scenario.