The Water Development Board (WDB) opened all the 44 gates of Teesta Barrage on Friday to rein in the high water pressure, with the river flowing 35cm above the danger level.
Around 11am on Friday, water flow in the barrage was recorded at 52.95 cm, said WDB officials.
"Due to heavy rains, most of the gates of Gajal Doba barrage on the Indian side were opened, which increased the water level of the Teesta and adjoining small rivers," said Executive Engineer Mizanur Rahman.
But the official said the water level may decrease by afternoon.
Flood-like situation triggered by the increased water level of the river is giving several residents of the district sleepless nights.
The worst-hit are around 3,000 families in Angarpota-Dahagram of Patgram upazila, Gaddimari, Singimari, Sinduna, Patikapara, Dauabari union sandbar area, Mahishkhocha union of Aditmari upazila, Rajpur of Sadar upazila, Khuniagach, Gokunda union and the Sandbar area of Kaliganj upazila.
These families have demanded speedy implementation of the Teesta mega project as this is the fourth time this year that they have been hit.