| 要約: | In the past, flood losses or damages can only be determined after the incident.
However, with the development of information technology, especially computer
technology, a flood can be modelled using desktop computer and estimation of
damages and losses due to flooding can be assessed quicker or even before the flooding
occurs. The combination of 1D modelling techniques in the river channels and 2D on
floodplains balanced the time required to build the model and accuracy of the
simulation. With the advancement of Geographical Information System (GIS)
technology, simulation results can be analyzed and presented in a more visually
appealing manner. The objective of this study is to produce flood maps through
computer modeling technique, determine the area involved and further assess the
losses that may be encountered. The area selected for this study is Tupai River with a
catchment area of approximately 950 hectares and 7.5km in length of Tupai River that
includes residential and industrial areas and served as one of the Taiping City drainage
system. Finding from the study reveals that in 100 years Average Recurrence Interval
of Rainfall, only 119 percent of the total catchment area of Tupai River inundated with
flood waters. Total losses estimated using the method introduced by JICA (1995) is
approximately RM700,000.00 that involved 303 houses and 1333 resident.
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