Onrush of water from upstream across the Indian border since Tuesday night triggered flash floods in villages along the Teesta river and other low lying areas in Lalmonirhat, leaving over 30,000 people marooned.
Many flood affected people started shifting their houses to safer places.
The affected areas are Mahishkhocha union of Aditmari upazila, Gokunda, Rajour and Khuniyagachh unions of Lalmonirhat Sadar upazila, Kakina and Bhitmari of Kaliganj upazila, Gaddimari, Dawabari, Sindurna and Saniyajan of Hatibandha upazila and Dahagram of Patgram upazila.
However, the water level of the Teesta was below the danger mark at Teesta Barrage point of Hatibandha upazila’s Dowani area on Wednesday morning, said Bajle Karim, sub-divisional engineer of Water Development Board (WDB) in Lalmonirhat.
Sudden rush of water from the upstream causes almost an immediate overflow and consequent flash floods due to huge siltation in the beds of Teesta and Dharla rivers, he said.
Mosaddeque Hossain, chairman of Mahishkhocha union parishad UP, said around eight thousand people in his union have been marooned by water.
“Many volunteers are helping flood-affected villagers in char and Teesta basin areas to shift their houses to safer places,” he said.
Fazlar Rahman, 58, a flood-affected villager of Gobardhan village in Aditmari upazila, said around 1200 people of 250 families in the village have been marooned by flash flood.
“We have taken shelter on a government road. We hope to return to our homes when the flood water recedes,” he said.
“We could not cook as flood water entered our kitchen. The flash flood occurred due to onrush of water from the Teesta at dawn on Wednesday,” said Nurjahan Begum, 48, a food-affected family member at Char Gobordhan village of Aditmari upazila.