Regional Intensity Duration Frequency (IDF) Curve using Hourly Rainfall Data Series and Soil Conservation Service (SCS) Method for Jamshedpur, Jharkhand

IJEP 45(12): 1142-1149 : Vol. 45 Issue. 12 (December 2025)

Nigam Prakash, Sunil Kumar Murmu* and Sangeeta Kumari

National Institute of Technology, Department of Civil Engineering, Jamshedpur, Jharkhand, India

Abstract

One of India’s major industrial regions is the city of Jamshedpur in Jharkhand state. It has been observed that the National Institute of Technology (NIT) Jamshedpur automatic weather station and Indian Meteorological department (IMD) Alipore show similar rainfall patterns. Due to industrial activity, the environment is dusty and because of the sloped landscape, rainwater runoff flows into the sea, making the area susceptible to drought. To analyze the intensity-duration-frequency (IDF) curve, 35 years of hourly rainfall data from 1980 to 2014 were collected from IMD India, for the rain gauge station Dumdum. Gumbel’s distribution theory was used to develop an empirical equation for hourly rainfall intensity for return periods of 2, 5, 10, 25, 50 and 100 years. The technique for creating the intensity-duration-frequency curve was applied for each duration (1, 2, 3, 6, 12, 18 and 24 hr). All these reliable 35-year rainfall intensity data are based on self-recording rain gauge (SRRG) and automatic rain gauge data series, which were digitally transformed into hourly rainfall data. Soil conservation service (SCS) analysis has been developed to monitor drought conditions in Jharkhand.

Keywords

Rainfall, Intensity duration frequency curve, Rainfall intensity, Rainfall frequency relationship, Sewer, Flood management, Rain gauge station

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