Dhaka, June 23 -- The Teesta River has crossed its danger mark amid a continuous surge of water from upstream, now flowing one centimetre above the warning threshold.

To manage the situation, authorities have opened all 44 sluice gates of the Teesta Barrage at Nilphamari's Dalia point.

Amitabh Chowdhury, an executive engineer of the Bangladesh Water Development Board's (BWDB) Dalia Division, said on Tuesday afternoon that the river was flowing at 52.16cm at the Dalia point at 3pm.

The danger level at this specific point is 52.15cm.

The river had been well below danger level earlier in the day, sitting 5cm under at 6am and 10cm under at 9am.

It dipped further to 15cm below danger level around noon before surging sharply to breach the ...