دانلود کتاب روندهای نوآورانه در سیستم های هیدرولوژیکی و محیطی – مجموعه مقالات ITHES 2021

Chennai is a coastal city located in the northern part of Tamil Nadu with an average annual rainfall of 1400 mm. It is among the major metropolis of India and has undergone rapid urbanization. Accommodating the growing population in the past few decades has been at the cost of an increased hydrological risk in the region. Chennai has been suffering from frequent floods and droughts due to poor land and water resources management practices. This study quantifies the hydrological risk in the region with respect to surface and groundwater using the DRASTIC method and SWAT model. Simulation results show that the run-off in 2018 was 141% of the run-off in 1998. This increase is heavily influenced by the land management practices of the study area. It has been found that 36.8% of the study area is under high vulnerability to groundwater contamination, while 58.4% has amedium vulnerability. Development plans need to include management practices both for surface and groundwater resources to ensure that the present level of risk is not further aggravated.