The water was flowing 70cm above the danger level at Kajipur point land at 45cm at Sirajganj point, said local Water Development Board Deputy divisional engineer AKM Rafikul Islam.
“The flood can take devastating form if the water level continues to rise in such way," he said.
Many families are already trapped due to waterlogging and many took shelter at flood control embankments, he said.
Also read: Sirajganj at flood risk as Jamuna water level rises
Most of the low lying areas of Shahjadpur, Belkuchi, Chawhali, Kazipur and Sadar upazilas went under water, he added.
A local farmer said they have no option but to cut down the jute plants early despite the fact that they would suffer loss.
Deputy Commissioner’s office said they have distributed necessary relief materials in five upazilas.
Also read: Jamuna breaks its banks in Bogura; over 6,000ha paddy fields flooded