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Comparison of flood distribution models for Johor river basin

Ismail, Ahmad Zuhdi and Yusop, Zulkifli and Mohamed Yusof, Zainab (2015) Comparison of flood distribution models for Johor river basin. Jurnal Teknologi, 74 (11). pp. 123-128. ISSN 0127-9696

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Official URL: http://www.jurnalteknologi.utm.my/index.php/jurnal...

Abstract

One of the most useful and commonly used parameters to describe a flood event is peak flow or annual maximum flood. In many localities, storm water control facilities are required and their sizes are determined based on certain peak flow magnitude. This study aimed at estimating the average recurrent interval (ARI) of flood event for Johor River basin based on the distributions of annual peak flow. The analysis used annual maximum flow data from July 1965 to June 2010 recorded at the Rantau Panjang gauging station. Five distribution models, namely Generalized Extreme Value (GEV), Lognormal, Pearson 5, Weibull and Gamma were tested. The goodness fit test (GOF) of Kolmogorov-Smirnov (K-S) was used to evaluate and estimate the best-fitted distribution. The results reaffirm the current practice that GEV is still the best-fitted distribution model for fitting the annual peak flow data. On the other hand, gamma distribution showed the poorest result.

Item Type:Article
Uncontrolled Keywords:annual peak flow, average recurrent interval, general extreme value distribution, goodness of fit test, johor river basin
Subjects:A General Works
ID Code:58111
Deposited By: Haliza Zainal
Deposited On:04 Dec 2016 12:07
Last Modified:29 Aug 2017 16:41

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