SUNSARI: The water flow at the Koshi Barrage has surged to 523,795 cusecs per second as of 6 p.m. Sunday, according to official measurements.

Continuous rainfall since Saturday has raised concerns that the flow may increase further.

Superintendent of Police Keshav Kumar Thebe of Sunsari reported that while small and medium vehicles are still operating, heavy cargo trucks have been restricted.

Authorities warned that if the water level rises further, traffic across the barrage will be halted completely.

The Koshi Barrage is considered dangerous once the water flow exceeds 300,000 cusecs per second.

Currently, all 56 gates of the barrage remain closed, and red lights have been switched on as a danger signal.