This research focuses on the contribution of young millennials in reducing the risk of tidal fl ooding along the northern coast of Semarang. Young millennials have received special att ention in disaster management, and the study of digital transformations in disaster management has become more signifi cant. The objective of this study is to examine how smart disaster responses to natural disasters, specifi cally the case of tidal fl ooding in three districts of the city (North Semarang, Genuk, and Tugu) and a district nearby Demak Regency (Sayung). To obtain comprehensive results, this research uses qualitative methods, which data collected through in-depth interviews; Focus Groups Discussion (FGD); observations; and desk studies. This study fi nds that Millennials' involvement is very important due to their distance from political interests and innovatively able to off er strategies in reducing the problems caused by tidal fl oods. The involvement of millennials in disaster management is relevant, given that Semarang will soon enjoy the demographic bonus, i.e. have a signifi cant percentage of its population of productive age. Lastly, this research argues that vibrant public participation in disaster management can only be possible under democratic circumstances. As the implication, the study on public active participation might help disaster risk reduction campaign. © 2019 Journal of Pediatric Research. All rights reserved.