Determination of imperviousness and its impact on risk based urban flood modeling

Abstract

Floods are the most common and widespread disasters in a tropical country like India While the reason for flooding in rural areas is mostly due to high river discharge the same in urban areas is due to increased imperviousness and poor drainage The tremendous growth of infrastructure without adequate provision for drainage has increased runoff thereby aggravating the flooding in urban areas The criticalities in the quantification of imperviousness and its impact on flood modeling and flood