Flood water began rushing in through half a kilometer breach on the earthen wall at Raydaha on Thursday night.
The flood guard was seen falling apart from the start of the monsoon season but the cracks were blocked using sand bags.
But the Jamuna rose fiercely during the past two days before giving it a final blow.
“Jamuna was flowing 84 centimetre above the danger mark in these parts on Thursday,” said Bogra Water Development Board Executive Officer Nurul Islam Sarkar.
The gushing waters flooded Raydaha, Shekherparha, Koritala, Kutubpur, Doriparha and Dhunat over night.