DEVELOPMENT OF INTENSITY DURATION FREQUENCY CURVES FOR NARSAPUR MANDAL, TELANGANA STATE, INDIA

Abstract

Abstract The government of Telengana State, India, has taken up restoration of minor irrigation tanks to store its maximum capacity under a massive programme called Mission Kakatiya. For estimation of runoff into these tanks, intensity of rainfall for shorter duration is required. Hence, an attempt is made in this study to generate intensity of rainfall for durations from 1-hour to 12-hour using an empirical formula from Indian Meteorological Department (IMD). Frequency analysis using Gumbel’s Extreme Value Distribution method is considered to establish Intensity-Duration-Frequency curves. Daily rainfall data for the years 2009-14 of Narsapur Mandal, Medak District, Telengana State, India, is taken for the analysis considering various return periods of 5 Year, 10 Year, 25 Year, 50 Year and 100 Years.