SISTEM PENGENDALIAN BANJIR KALI JUANA
ABSTRACT: River Juana is
bifurcation of River Serang through Wilalung Flood Gate. This river is the only
drainage channel from Juana Plain to Java Ocean. Some areas are flooded by
River Juana annually. The biggest flood was happened in 2002 with
11600 hectare flood
area, in which
3600 hectare of
flood area was
inundated for 2 –
3 months. This study objectives are to find the source
of flood in R. Juana using previous study review, design flood analysis, spill
on Wilalung Flood Gate, and hydraulic condition of River Juana; and also to
find appropriate flood control system to be implemented in River
Juana. Based on the analysis,
it can be
concluded that the
flood in R.
Juana was caused
dominantly by high rainfall intensity, the area condition
that placed in low contour, low river gradient, high sedimentation rate in the
river, high flood in R. Juana river branches (1542 m3/s for 2 year return
period) that exceeded the R.Juana capacity (90 m3/s, Seluna Project, 2003),
narrow tributary due to ships stopping, and high spill from Wilalung Flood
Gate. In addition, the most
appropriate flood control
systems are implementing
river normalization, constructing
embankment and flood retention pond.
Keywords: flood, flood control, the source of flood
Penulis: Istiarto, Gurawan
Djati Wibowo
Kode Jurnal: jptsipildd070020
