Emerging threats during anthropocene as urban flooding of Bhubaneswar City, India

Urban flood disasters are one among the cataclysmal episodes of regular events in cities during the Anthropocene epoch in 21st century in India. The natural events, city planning bugs, uncontrolled urban migration, encroachments of anatomized drainage channels, and unpredictable climate change has summoned flash floods, and water logging the low-slung terrains within the city from1980 onwards. The rapid increase in population growth, erratic climatic change have resulted more downpours. The urban floods in Bhubaneswar during years 2008, 2014, 2016, 2018 and 2019 have signaled the smart city at danger without efficient urban flood management system. Planning is done for discharge 49.3 MLD of white, black and grey water through the drains of the city of 340Km. The Climatic change, urban sprawl, migration, unauthorized encroachments of drains, high-rise building, satellite cities and LU/LC changes through GIS methods are the causes for recent urban floods is focused. The Gumbel and the Log Pearson methods have been used for predict rain fall trend of the city at various return periods that indicate the increasing trend in annual rainfall. The flaws in initial design and planning are discussed with ameliorative measures that could be taken to save the smart city from urban flooding disaster.