Regionalisation of low flow frequency curves for the Peninsular Malaysia

Regional maps and equations for the magnitude and frequency of 1, 7 and 30-day low flows were derived and are presented in this paper. The river gauging stations of neighbouring catchments that produced similar low flow frequency curves were grouped together. As such, the Peninsular Malaysia was div...

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Main Authors:	Al-Mamun, Abdullah, Hashim, Alias, Daoud, Jamal Ibrahim
Format:	Article
Language:	English
Published:	Elsevier 2010
Subjects:	TC Hydraulic engineering. Ocean engineering
Online Access:	http://irep.iium.edu.my/6410/ http://irep.iium.edu.my/6410/ http://irep.iium.edu.my/6410/ http://irep.iium.edu.my/6410/1/21_Low_Flow_HYDROL16912.pdf

id	iium-6410
recordtype	eprints
spelling	iium-64102013-05-28T08:01:10Z http://irep.iium.edu.my/6410/ Regionalisation of low flow frequency curves for the Peninsular Malaysia Al-Mamun, Abdullah Hashim, Alias Daoud, Jamal Ibrahim TC Hydraulic engineering. Ocean engineering Regional maps and equations for the magnitude and frequency of 1, 7 and 30-day low flows were derived and are presented in this paper. The river gauging stations of neighbouring catchments that produced similar low flow frequency curves were grouped together. As such, the Peninsular Malaysia was divided into seven low flow regions. Regional equations were developed using the multivariate regression technique. An empirical relationship was developed for mean annual minimum flow as a function of catchment area, mean annual rainfall and mean annual evaporation. The regional equations exhibited good coefficient of determination (R2 > 0.90). Three low flow frequency curves showing the low, mean and high limits for each region were proposed based on a graphical best-fit technique. Knowing the catchment area, mean annual rainfall and evaporation in the region, design low flows of different durations can be easily estimated for the ungauged catchments. This procedure is expected to overcome the problem of data unavailability in estimating low flows in the Peninsular Malaysia Elsevier 2010 Article PeerReviewed application/pdf en http://irep.iium.edu.my/6410/1/21_Low_Flow_HYDROL16912.pdf Al-Mamun, Abdullah and Hashim, Alias and Daoud, Jamal Ibrahim (2010) Regionalisation of low flow frequency curves for the Peninsular Malaysia. Journal of Hydrology, 381 (1-2). pp. 174-180. ISSN 0022-1694 http://www.journals.elsevier.com/journal-of-hydrology/ doi:10.1016/j.jhydrol.2009.11.039
repository_type	Digital Repository
institution_category	Local University
institution	International Islamic University Malaysia
building	IIUM Repository
collection	Online Access
language	English
topic	TC Hydraulic engineering. Ocean engineering
spellingShingle	TC Hydraulic engineering. Ocean engineering Al-Mamun, Abdullah Hashim, Alias Daoud, Jamal Ibrahim Regionalisation of low flow frequency curves for the Peninsular Malaysia
description	Regional maps and equations for the magnitude and frequency of 1, 7 and 30-day low flows were derived and are presented in this paper. The river gauging stations of neighbouring catchments that produced similar low flow frequency curves were grouped together. As such, the Peninsular Malaysia was divided into seven low flow regions. Regional equations were developed using the multivariate regression technique. An empirical relationship was developed for mean annual minimum flow as a function of catchment area, mean annual rainfall and mean annual evaporation. The regional equations exhibited good coefficient of determination (R2 > 0.90). Three low flow frequency curves showing the low, mean and high limits for each region were proposed based on a graphical best-fit technique. Knowing the catchment area, mean annual rainfall and evaporation in the region, design low flows of different durations can be easily estimated for the ungauged catchments. This procedure is expected to overcome the problem of data unavailability in estimating low flows in the Peninsular Malaysia
format	Article
author	Al-Mamun, Abdullah Hashim, Alias Daoud, Jamal Ibrahim
author_facet	Al-Mamun, Abdullah Hashim, Alias Daoud, Jamal Ibrahim
author_sort	Al-Mamun, Abdullah
title	Regionalisation of low flow frequency curves for the Peninsular Malaysia
title_short	Regionalisation of low flow frequency curves for the Peninsular Malaysia
title_full	Regionalisation of low flow frequency curves for the Peninsular Malaysia
title_fullStr	Regionalisation of low flow frequency curves for the Peninsular Malaysia
title_full_unstemmed	Regionalisation of low flow frequency curves for the Peninsular Malaysia
title_sort	regionalisation of low flow frequency curves for the peninsular malaysia
publisher	Elsevier
publishDate	2010
url	http://irep.iium.edu.my/6410/ http://irep.iium.edu.my/6410/ http://irep.iium.edu.my/6410/ http://irep.iium.edu.my/6410/1/21_Low_Flow_HYDROL16912.pdf
first_indexed	2023-09-18T20:15:21Z
last_indexed	2023-09-18T20:15:21Z
_version_	1777407750228148224

Regionalisation of low flow frequency curves for the Peninsular Malaysia

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