ASSESSING THE “SPONGE CITY” MODEL SOLUTIONS IN URBAN DEVELOPMENT IN THE FORMER VINH LONG CITY (CURRENTLY THE WARDS OF LONG CHAU, THANH DUC, PHUOC HAU, TAN HANH, AND TAN NGAI, VINH LONG PROVINCE)

Abstract

The objective of this study is to evaluate the solutions of the “sponge city” model in addressing urban flooding in the wards of Vinh Long city (former). The study employs surveys and statistical analysis of inundation locations, combined with data on green spaces and land use, to propose and calculate the effectiveness of each type of green infrastructure. The survey and analysis results show that green infrastructure solutions play an important role in controlling surface runoff and reducing the risk of urban flooding. Based on data analysis and charts, grass-covered embankments were identified as the most effective solution, as they retain large volumes of water in most wards. Green roofs also deliver positive outcomes, particularly in areas with widespread roof coverage. Meanwhile, bioretention swales and permeable pavements, though less effective, still contribute to dispersing and slowing runoff. Overall, the study affirms that the integrated application of multiple green infrastructure solutions can optimize runoff reduction, enhance urban resilience, and improve adaptability to climate change and extreme weather events.