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Development of Intensity Duration Frequency Curve, Equation and Nomograph for Udaipur
For most water engineering projects, estimation of peak intensity of rainfall for different return periods using IDF curves are necessary. These curves are pre-requisite for planning, design, management of various hydraulic structures, urban storm water drainage and water conservation structures. IDF curves can be developed through the application of appropriate statistical distributions based on the historic records of rainfall data. In this paper a mathematical relationship has been developed between maximum intensity of rainfall and Return Period (5, 10, 25, 50, 100, 200, 300, 400, 500 and 1000 years) for various rainfall duration (1, 2, 3, 6, 12 and 24 hour) using best fit distribution. 28 years (1986-2014) of rainfall mass curves have collected and analyzed to get rainfall intensities for various durations from raingauge station installed in Meteorological Observatory, College of Technology and Engineering campus, Udaipur. Around 03 different probability distributions model (Gamble’s extreme value type I, Logpearson type III, Normal distribution) were used to evaluate maximum rainfall intensity for various durations. Kolmogorov- Smirnov and Chi-squared tests were used for the goodness of fit of the probability distributions. Results showed that Gumbel distribution found to be have least critical values for both the tests for all durations hence consider as the best fit distribution for given sample population. The derived precipitation intensities were utilized for generation of intensity duration frequency curve and equation. A nomograph has also developed with 03 parallel parameter scale using method suggested by Luzzadar (1964) to represent this relationship in a graphical form.
Chi-square, Kolmogorov-smirnov, Nomograph, Idf Equation
- Babu, R. (2001). Rainfall intensity-duration-return period equations and nomographs of Madhya Pradesh. Indian J. Soil Conservation, 29(3): 200-205
- Chow, V.T., Maidment, D.R. and Mays, L.W. (1988). Applied Hydrology. McGraw-Hill International Editions, New York.
- Dupont, B.S. and Allen, D.L. (2006). Establishment of Intensity–Duration–Frequency Curves for Precipitation in the Monsoon Area of Vietnam. Kentucky Transportation Center, College of Engineer, University of Kentucky in corporation with US Department of Transportation.
- Ghnshyamdas (2014). Hydrology and Soil Conservation ngineering:Including Watershed Management, PHI Learning Private Limited.99-123p.
- Ibrahim, I.H. (2012). Developing rainfall intensity–duration– frequency relationship for two regions in Saudi Arabia. J. King Saud University-Engineering Sci., 24(2): 131-140.
- Latitude and longitude of Udaipur (https://www.google.co.in/maps/place/Udaipur,+Rajasthanemail@example.com,73.6407606, 23152m/data=!3m1!1e3!4m2!3m1!1s0x3967e56550a14411: 0xdbd8c28455b868b0!6m1!1e1).
- Luzzadar, W.J. (1964). Graphs for enginers, Prentice Hall of India (P) Ltd., New Delhi
- Raghunath, H.M. (2006). Hydrology Principles, Analysis and Design, Revised Second Edition, New Age International Publication 132-135 p.
- Tfwala, C.M., Rensberg, L.D.V., Schall, R., Mosia, S.M. and Dlamini, P. (2017). Precipitation intensity-duration-frequency curves and their uncertainties for Ghaap plateau. Climate Risk Management, Elseveir Journal, 16: 1-9.
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