HYDRAULIC ANALYSIS OF THE JOHOR RIVER USING HEC-RAS
ABSTRACT: Kota Tinggi located
in the southern state of Malaysia, i.e. Johor Baru, experienced severe floods
in December 2006 and January 2007, which was due to prolonged and intense
rainfall. Johor River was inadequate to accommodate the water and at the same
time the flow unable to escape the swolen river, hence water inundated the
town. One of the river characteristics that may contribute in flooding is the
meandering shape. Therefore it was proposed to do a hydraulic model that
simulated some alternate channels that straightened some parts of the river.
The model used one dimensional steady state approach using HEC-RAS software.
The simulation result of the existing condition estimated that January 2007
flood event had a return period of 100 years. From the hydraulic model, it can
be concluded that the choice of location and the length of the alternate
channel had an effect on how much water level reduced.
Penulis: Dyah Indriana
Kusumastuti
Kode Jurnal: jptsipildd100159
