Integrated urban flood risk management approach in context of uncertainties: case study Ho Chi Minh city

Abstract

The paper deals with an Integrated Urban Flood Management Strategy for Ho Chi Minh City to adapt with uncertainties of both natural and anthropogenic impacts. Observed data analysis and hydraulic simulations were uti‑ lised to prove the significance of such uncertainties. Hydraulic simulations proved that conventional solutions (e.g. storm sewers, dikes and tide gates) may not be effective to cope with rainfall intensity increase and land subsidence. Beyond constructional intervention that will be still required to improve, soonest as possible, the flood control capac‑ ity of the city to a reasonable level, integrated plans should be also considered in order to encourage sustainable urban development initiatives and to mainstream current investments so that irreversible and vulnerable development could be avoided. A 3‑component strategy was also suggested and analysed for the case study of Ho Chi Minh City, in which Prevention, Adaptation and Resilience should be considered and prioritised.