Continuous rainfall and upstream water flow caused a dam to collapse in the Bolai River area of Chamardani Union, Madhyanagar upazila, Sunamganj. The breach allowed floodwater to inundate vast boro paddy fields in Jinaria Haor, destroying the year-long efforts of more than fifty farmers who had temporarily settled there for cultivation. The incident occurred on Thursday morning following days of heavy rain and strong water pressure.

Local farmers said they had left their permanent homes and lived for six months in temporary settlements near the haor to grow crops. Many endured hardships, including halting their children's education, to sustain their livelihoods. After the dam broke, their crops and investments were lost under water. One farmer said he had cultivated the land with great effort but lost everything, while another reported that his 20 kathas of land were submerged before harvest.

According to the upazila agriculture sub-assistant officer, 26 hectares of land were under cultivation in Jinaria Haor, of which 8 hectares were already waterlogged before the breach, and an additional 3 hectares went underwater afterward.