These floods happened so suddenly that no one could predict their impact on people's livelihoods. This flash flood, considered one of the worst floods in Malaysia's history, is the result of poor urban planning as well as climate change. Flash flood in a hypermarket in Shah Alam. Image credit: Sam Sam. The study assesses the impacts of flash floods, massive flash floods, and explores the dominant coping strategies adopted by the haor residents to mitigate the impact. The primary data were.