• Mr. Chougale J.B
• Siddesh Inamdar
• Prathamesh Nachanekar
• Mayuri Tukrul
• Shreya Vyas

India is a developing country and due to haphazard growth, cities have witnessed huge problems due to flooding in the recent years. Thus, the focus on flood management and flood risk assessment has increased. In this phase the new cities are being developed in accordance to flood risk management but the older cities facing the problem of water logging and floods very often due to heavy rainfall. It was found that ‘Vasai’ faces such problems very severely during monsoon. City gets water logged most of the time as intensity of rain is heavy. This is a major issue for Municipal Corporation and also the residents of Vasai. The haphazard growth of the population has imparted huge load on the existing sewers which failed to work efficiently during rainy season. Hence water logging is more frequent. Therefore, to avoid such difficulties water need to be obstructed where it won’t impart any damage to the public life and water can be utilized while detaining, for different purposes and the water which is let into sea can be reduced. Runoff estimation can be done by Rational Method and empirical formulae like Lacy’s Method, Khosla’s Method etc. and also with the help of modern softwares like HEC-HMS, Storm Water Management Model (SWMM). Widely used method for runoff estimation and drainage modelling is SWMM; using SWMM we get total runoff, peak runoff, runoff coefficient.

Runoff, SWMM, Rational method.

"Runoff Estimation by Rational Method and SWMM in Vasai", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.6, Issue 2, page no.187-191, February-2019, Available :http://www.jetir.org/papers/JETIRAE06042.pdf

"Runoff Estimation by Rational Method and SWMM in Vasai", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.6, Issue 2, page no. pp187-191, February-2019, Available at : http://www.jetir.org/papers/JETIRAE06042.pdf