In this option, an embankment was considered along the
both banks of the main channel (left channel) in the tidal basin
and thereby allowing sedimentation by cutting the
embankment part by part gradually from downstream to
upstream for both beels as shown in Fig. 3. The total length of
the main channel of BK and EBK is 3660m and 5760m
respectively. For the first year the embankment was
considered for a length of three quarter of the total length of
the main channel i.e., 2745m for BK (Fig. 3 A1) and 4320m
for EBK (Fig. 3 A2) and sedimentation was allowed for the
rest part. For the second year embankment was removed in
such a way that half of the main channel was open for water
flow and sedimentation (Fig. 3 B). In the third year the
embankment was exist for only one quarter of the main
channel and the rest three quarter was allowed for
sedimentation (Fig. 3 C). Finally in the fourth year,
sedimentation was allowed for full channel without any
embankment (Fig. 3 D).