Cyclone and Storm Surge - Iczmpwb.org

3.34
Figure 3-10 shows the tail end of the SWF/DWF channel that is at a high level due to a high
tide of the river Kultigong. The river is connected to the bay of Bengal through the river
Raimangal to which it connects about 50 kms downstream.
Figure 3-10. Kultigong at high tide – sluice gates closed (below water): a view from downstream
The River Research Institute, Govt. of West Bengal had in the past carried out sustained
studies on the status of the Kultigang. These studies carried out till 1979, as shown in the Table
3-3 below, did not show much variation. But in the recent past the channel has been subjected
to larger discharge with more pollution. In the future also this channel will have to deal with still
larger volumes of discharge and perhaps more pollution. So a stringent surveillance on the
state of this channel is urgently called for.
Table 3-3. Hydraulic Condition of river Kultigang: Annual average cross-sectional areas in sq.
meter below 1.14 M. (3.75 feet) PWD at different points on the river Kultigong.
Year Nowi/Sunthi Haroahat Ghusighata Malancha Bamnajore
junction
244 M D/S of
Kulti outfall
1952 33 305 685 2123 4323
1953 34 304 719 2076 5025
1954 31 302 690 1893 4835
1955 30 311 718 1793 4872
1956 29 343 743 1843 4968
1957 27 336 721 1787 5013
1958 24 330 749 1690 4886
1959 24 301 665 1474 4692
1960 23 321 671 1531 4758
1961 30 335 648 1893 4171