Excessive rain in the north-eastern part of Bangladesh and adjacent states of India triggered floods in Sunamganj as two major rivers are overflowing.
Flash flood water is flowing from upstream, and many parts of the district have already flooded and road communication has been hampered.
Road to Tahirpur upazila from Sunamganj Sadar has been inaccessible since Tuesday as flood water submerged it at Shaktiarkhola area of Bishwambarpur upazila in the district.
According to the rainfall and river situation report of Flood Forecasting and Warning Centre (FFWC) of Bangladesh Water Development Board (BWDB), water level in all major rivers is rising and that may continue in the next 72 hours.
FFWC report says, Surma river is overflowing 41 centimetres above the danger level at Sunamganj point, while Jadukata river is overflowing by 78 centimetres at Laurer Garh point in Tahirpur upazila.
Until 9am yesterday, 280 millimetres rainfall was recorded at Laurer Garh point and 143 mm at Sunamganj point, the report says.
Sunamganj District Administration opened a control room to monitor the situation and started preparing for the flood.
Abu Bakar Siddik Bhuiyan, executive engineer of BWDB in Sunamganj, said, “If rain continues, it might cause a serious flood situation in Sunamganj.”