The City of Surat is one of the most prosperous (also known as Diamond City) city in India.Surat has been facing floods since formation of the city. Even after the building of the Ukai dam, the floods continued to damage the city. Due to rapid growth and expansion of the city, the flood damages are increasing especially since the last two decades, with the frequency of floods staying at least once in four years. In 2006 extreme floods (due to emergency release from Ukai dam) inundated 75% area of the city. This case study report shows how the implementation of an early-warning-system has helped to increase the resilience of the city to future flood events.