JWARP  Vol.8 No.7 , June 2016
Development of Rainfall Intensity Duration Frequency Curves for Mumbai City, India
Abstract: The change in rainfall pattern and intensity is becoming a great concern for hydrologic engineers and planners. Many parts of the world are experiencing extreme rainfall events such as experienced on 26th July 2005 in Mumbai, India. For the appropriate design and planning of urban drainage system in an area, Intensity Duration Frequency (IDF) curves for given rainfall conditions are required. The aim of the present study is to derive the IDF curves for the rainfall in the Mumbai city, Maharashtra, India. Observed rainfall data from 1901 pertaining to Colaba and from 1951 of the Santacruz rain gauge stations in Mumbai are used in the present study to derive the IDF curves. Initially, the proposed IDF curves are derived using an empirical equation (Kothyari and Garde), by using probability distribution for annual maximum rainfall and then IDF curves are derived by modifying the equation. IDF curves developed by the modified equation gives good results in the changing hydrologic conditions and are compatible even with the extreme rainfall of 26th July 2005 in Mumbai.
Cite this paper: Zope, P. , T. I., E. and Jothiprakash, V. (2016) Development of Rainfall Intensity Duration Frequency Curves for Mumbai City, India. Journal of Water Resource and Protection, 8, 756-765. doi: 10.4236/jwarp.2016.87061.

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