Development of Intensity Duration Frequency (IDF) Curves for Upper and Lower Kuttanad, Kerala
Minnu K Benny1, J. Brema2
1Minnu K Benny, Student, Department of Civil Engineering, Karunya Institute of Technology and Sciences, Coimbatore (Tamil Nadu), India.
2Dr J. Brema, Professor, Department of Civil Engineering, Karunya Institute of Technology and Sciences, Coimbatore (Tamil Nadu), India.
Manuscript received on 22 April 2019 | Revised Manuscript received on 01 May 2019 | Manuscript Published on 05 May 2019 | PP: 348-350 | Volume-8 Issue-2S2, May 2019 | Retrieval Number: B10740182S219/19©BEIESP
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© The Authors. Blue Eyes Intelligence Engineering and Sciences Publication (BEIESP). This is an open access article under the CC-BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/)
Abstract: Rainfall extremes such as their magnitude and duration are basically used in intensity duration frequency curves (IDF) relationships and this will be helpful in design of hydraulic structures, drainage systems, water resource projects etc. The aim of this study is to define IDF curves for upper and lower Kuttanad region of Kerala using Gumbel distribution. Historical hourly rainfall data obtained from Indian meteorological department, Trivandrum is used in this study. Many distributions are available to obtain the intensity duration frequency curve but Gumbel distribution is used here as it takes extreme values. This relationship is determined by means of statistical analysis of rainfall data. The distributions were carried out with return periods of 2, 5, 10, 50 and 100 years with durations of 1, 2, 3, 6, 12 and 24 hours. The obtained results were compared with the values obtained from empirical equations.
Keywords: Intensity-Duration-Frequency Relationships Return Period, Gumbel’s Distribution, Empirical equations.
Scope of the Article: Civil and Environmental Engineering