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Investigation on at-site flood frequency analysis in South-East Australia

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Main Authors: K., Haddad, A., Rahman
Other Authors: a.rahman@uws.edu.au
Format: Article
Language:English
Published: The Institution of Engineers, Malaysia 2011
Subjects:
Design floods
Flood frequency analysis
Probability distributions
LP3 distribution
Online Access:http://dspace.unimap.edu.my/xmlui/handle/123456789/13631
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spelling my.unimap-136312011-09-04T01:35:19Z Investigation on at-site flood frequency analysis in South-East Australia K., Haddad A., Rahman a.rahman@uws.edu.au Design floods Flood frequency analysis Probability distributions LP3 distribution Link to publisher's homepage at http://www.myiem.org.my/ Flood frequency analysis is frequently adopted in flood risk assessment for catchments where recorded streamflow data of reasonable length are available. In the Australian Rainfall and Runoff (ARR) 1987, the national guideline for design flow estimation, Log Pearson Type 3 (LP3) distribution fitted with method of product moments (MPM) is recommended for at-site flood frequency analysis. This paper uses annual maximum flood data from 18 gauged sites across South-east Australia to assess the relative performances of the currently recommended method of at-site flood frequency analysis (LP3-MPM) and some of the techniques developed in recent years e.g. Generalised Extreme Value (GEV)-LH moments, LP3-Bayesian maximum likelihood (BML) and Generalised Pareto (GPA)–L moments. Several measures are adopted to compare the performances of various flood frequency analysis methods in the range of average recurrence intervals of 2 years to 100 years including statistical hypothesis testing and comparison of the quantile estimates obtained from the fitted distributions with graphical estimates. It is found that the GPA-L moments and GEV-LH moments methods provide the best fit to the observed flood data of the selected stations followed by the LP3-BML method. The currently recommended ARR method (LP3-MPM) does not perform as well as the above three methods. 2011-09-04T01:35:19Z 2011-09-04T01:35:19Z 2008-09 Article The Journal of the Institution of Engineers, Malaysia, vol. 69(3), 2007, pages 59-64 0126-513X http://www.myiem.org.my/content/iem_journal_2008-179.aspx http://hdl.handle.net/123456789/13631 en The Institution of Engineers, Malaysia
institution Universiti Malaysia Perlis
building UniMAP Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Malaysia Perlis
content_source UniMAP Library Digital Repository
url_provider http://dspace.unimap.edu.my/
language English
topic Design floods
Flood frequency analysis
Probability distributions
LP3 distribution
spellingShingle Design floods
Flood frequency analysis
Probability distributions
LP3 distribution
K., Haddad
A., Rahman
Investigation on at-site flood frequency analysis in South-East Australia
description Link to publisher's homepage at http://www.myiem.org.my/
author2 a.rahman@uws.edu.au
author_facet a.rahman@uws.edu.au
K., Haddad
A., Rahman
format Article
author K., Haddad
A., Rahman
author_sort K., Haddad
title Investigation on at-site flood frequency analysis in South-East Australia
title_short Investigation on at-site flood frequency analysis in South-East Australia
title_full Investigation on at-site flood frequency analysis in South-East Australia
title_fullStr Investigation on at-site flood frequency analysis in South-East Australia
title_full_unstemmed Investigation on at-site flood frequency analysis in South-East Australia
title_sort investigation on at-site flood frequency analysis in south-east australia
publisher The Institution of Engineers, Malaysia
publishDate 2011
url http://dspace.unimap.edu.my/xmlui/handle/123456789/13631
_version_ 1643790943381356544
score 13.235362

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