L-moment-based frequency analysis of high-flow at Sungai Langat, Kajang, Selangor, Malaysia

Firdaus Mohamad Hamzah, Siti Hawa Mohd Yusoff, Othman Jaafar

Research output: Contribution to journalArticle

Abstract

Annual maximum daily streamflow data were used to examine flood frequency for Sungai Langat in Kajang, Selangor, Malaysia. The objectives of this study were to identify the best fit probability distribution to the streamflow data and estimate the return period of the extreme flood events. The L-moment method was implemented to estimate the parameter of probability, by using distributions namely Gamma, LN3, GEV, PE3, GLO and Kappa. It was found that Kappa distribution was the best fitting distribution to the data after being tested using the goodness-of-fit tests. The Kappa distribution gave the most appropriate to the annual maximum series data of Sungai Langat, Kajang, Selangor. The return values were calculated using Kappa distribution model. The return period of 2 years gave the return value of 49.09 m3/s, while return period of 100 years gave the return value of 390.54 m3/s.

Original languageEnglish
Pages (from-to)1357-1366
Number of pages10
JournalSains Malaysiana
Volume48
Issue number7
DOIs
Publication statusPublished - 1 Jan 2019

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frequency analysis
return period
streamflow
flood frequency
distribution

Keywords

  • Goodness-of-fit test
  • L-moment
  • Probability distribution
  • Return period
  • Streamflow

ASJC Scopus subject areas

  • General

Cite this

L-moment-based frequency analysis of high-flow at Sungai Langat, Kajang, Selangor, Malaysia. / Mohamad Hamzah, Firdaus; Mohd Yusoff, Siti Hawa; Jaafar, Othman.

In: Sains Malaysiana, Vol. 48, No. 7, 01.01.2019, p. 1357-1366.

Research output: Contribution to journalArticle

Mohamad Hamzah, Firdaus ; Mohd Yusoff, Siti Hawa ; Jaafar, Othman. / L-moment-based frequency analysis of high-flow at Sungai Langat, Kajang, Selangor, Malaysia. In: Sains Malaysiana. 2019 ; Vol. 48, No. 7. pp. 1357-1366.
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