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Regional flood frequency analysis using L-moments for North Karoon basin, Iran


Citation

Borujeni, Sattar Chavoshi and Sulaiman, Wan Nor Azmin and Eslamian, Saeid (2010) Regional flood frequency analysis using L-moments for North Karoon basin, Iran. Journal of Flood Engineering, 1 (1). pp. 67-76. ISSN 0976-6219

Abstract

L-moment theory is increasingly being used in hydrology of floods for regional frequency analysis. The L-moments have been used for parameter estimation, homogeneity testing and selection of the regional distribution. Records of peak floods, observed in North-Karoon basin, are analyzed using five distributions: generalized logistic, generalized extreme value, lognormal, Pearson type III and generalized Pareto. Each of these three-parameters distributions are estimated by the L-moment method. The discordancy index and homogeneity testing show that 5 out of the 7 study sites belong to a homogenous region. Based on the L-moment ratios diagram and the goodness-of-fit measure, the three-parameter lognormal distribution is identified as the most appropriate distribution in the homogeneous study region. The regional peak flood estimates for each return period are obtained based on this distribution.


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Additional Metadata

Item Type: Article
Divisions: Faculty of Environmental Studies
Publisher: Serials Publications
Keywords: L-moments; Regional flood frequency; Probability distribution; Statistical hydrology
Depositing User: Nabilah Mustapa
Date Deposited: 19 Sep 2015 01:49
Last Modified: 25 Sep 2015 01:50
URI: http://psasir.upm.edu.my/id/eprint/16474
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