Some theoretical and legal foundations for urban stormwater management towards a sponge city model

Abstract

Sponge City (SPC) is a stormwater management model based on a systematic approach to source reduction, process control, and systematic treatment, while applying comprehensive engineering measures for water absorption, retention, storage, purification, reuse, and discharge into the drainage system. The objectives are to minimize urban flooding, control runoff pollution, improve the urban water environment, and restore urban water ecology. SPC is considered an effective solution to mitigate risks and reduce the impacts of flooding. However, the application of the SPC model in practice is not simple due to legal barriers and uncertain theoretical foundations. This article aims to summarize the theoretical and legal foundations related to SPC in Vietnam, providing additional bases to propose urban stormwater management solutions towards an SPC model that aligns with practical realities.

Keywords: Urban storm water; drainage management; sponge city.