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...
| Main Authors: | , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Elsevier
2010
|
| Subjects: | |
| Online Access: | http://irep.iium.edu.my/6410/1/21_Low_Flow_HYDROL16912.pdf |
| _version_ | 1796875376666869760 |
|---|---|
| author | Al-Mamun, Abdullah Hashim, Alias Daoud, Jamal Ibrahim |
| author_facet | Al-Mamun, Abdullah Hashim, Alias Daoud, Jamal Ibrahim |
| author_sort | Al-Mamun, Abdullah |
| collection | IIUM |
| 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 |
| first_indexed | 2024-03-05T22:37:51Z |
| format | Article |
| id | oai:generic.eprints.org:6410 |
| institution | International Islamic University Malaysia |
| language | English |
| last_indexed | 2024-03-05T22:37:51Z |
| publishDate | 2010 |
| publisher | Elsevier |
| record_format | dspace |
| spelling | oai:generic.eprints.org: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 |
| spellingShingle | TC Hydraulic engineering. Ocean engineering Al-Mamun, Abdullah Hashim, Alias Daoud, Jamal Ibrahim Regionalisation of low flow frequency curves for the Peninsular Malaysia |
| title | 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_short | Regionalisation of low flow frequency curves for the Peninsular Malaysia |
| title_sort | regionalisation of low flow frequency curves for the peninsular malaysia |
| topic | TC Hydraulic engineering. Ocean engineering |
| url | http://irep.iium.edu.my/6410/1/21_Low_Flow_HYDROL16912.pdf |
| work_keys_str_mv | AT almamunabdullah regionalisationoflowflowfrequencycurvesforthepeninsularmalaysia AT hashimalias regionalisationoflowflowfrequencycurvesforthepeninsularmalaysia AT daoudjamalibrahim regionalisationoflowflowfrequencycurvesforthepeninsularmalaysia |