Water levels of major rivers such as Brahmaputra, Dharla and Dudhkumar in Kurigram are rising fast due to incessant rains and onrush of waters from the upstream.
According to locals, more than 20,000 people have been marooned in Kurigram. At least a hundred low-lying villages near the embankments of rivers and char areas have been inundated in the past three days.
Another approximately 50,000 people in five upazilas of Lalmonirhat have been affected by the flash flood.
The rains worsened the flood situation in Sunamganj where seven upazilas have been flood affected.
Thirty villages in Akhaura, Brahmanbaria, have been inundated. Standing crops on a huge swathe of land and over 1,000 houses went under water there.
The Dharla was flowing 22 centimetres above danger level in the district sadar on Saturday, according to Flood Forecasting Centre. The Teesta was flowing just seven centimetres below the danger mark.
Water levels of Brahmaputra and Dudhkumar are also about to touch the red mark.
Many houses in Kurigram sadar, Phulbari, Rajarhat, Nageshwari, Bhurungamari, Ulipur, Chilmari, Rowmari and Char Rajibpur upazilas have been inundated in the second spell of flood this year.
In Sunamganj, authorities have suspended examinations in 893 primary schools, in view of gravity of the flood situation.
Haors and rivers in the district are swelling due to non-stop rains and hilly onrush of waters.
According to Akhaura upazila administration in Brahmanbaria, the dam over Hawra river in Tripura was damaged, releasing excessive waters towards the downstream areas of Brahmanbaria.
Farmland and houses of over 1,000 families went under water in the area. Two shelter centres have been opened in Akhaura south union.
Akhaura land port duty officer Shafiqul Islam said motor vehicles cannot easily move to and from the port and as a result, trade activities are being hampered.