@ARTICLE{Hashim_Mohmadisa_Reconstruction_2022, author={Hashim, Mohmadisa and Nayan, Nasir and Said, Zahid Mat and Setyowati, Dewi Liesnoor and Saleh, Yazid and Mahat, Hanifah and Koh, See L.}, number={No 52}, pages={205-209}, journal={Journal of Water and Land Development}, howpublished={online}, year={2022}, publisher={Polish Academy of Sciences; Institute of Technology and Life Sciences - National Research Institute}, abstract={Re-delimitation of rainfall regions plays an important role in determining the rainfall pattern of an area. This study aims to reconstruct the delimitation of rainfall regions for the western region of Peninsular Malaysia. This study involved only the collection of rainfall data at 133 stations from 1960 to 2010. These data were obtained from the Department of Irrigation and Drainage, Malaysia. The analysis methods applied include kriging, contouring and topology using a geographical information system. The results showed that the new delimitation of the western region has been formed with an area reduction of 10% compared to the original western region found by Dale. This is due to some areas in the western region have not received rainfall between 2540 and 2794 mm. The area that getting the rainfall between 2540 and 2794 mm is 46,413.6 km2, in contrast to the sized of Dale’s western region of 51,596.2 km2. The area that frequently getting rainfall of between 2540 and 2794 during 1960s to 2010 are Parit Buntar, Taiping, Kuala Kangsar, Ipoh, Teluk Intan, Tanjong Malim, Batang Kali, Cameron Highlands, Subang, Petaling Jaya, Klang, Kajang and Bangi. The new delimitation formed through this study can be used as a guide by the agencies that manage water resources in Perak, Selangor and Negeri Sembilan in planning a more efficient water supply system.}, type={Article}, title={Reconstruction of rainfall region boundaries for the western region found by Dale (1959) in Peninsular Malaysia}, URL={http://ochroma.man.poznan.pl/Content/122648/PDF-MASTER/2022-01-JWLD-26-Hashim.pdf}, doi={10.24425/jwld.2022.140391}, keywords={GIS, isohyetal method, Peninsular Malaysia, rainfall region boundaries}, }