The overall flood situation is improving in Sylhet and Sunamganj as river water has started receding in some parts of the two districts.
However, the flood situation slightly deteriorated at some low lying points of Netrokona.
Millions of flood victims in the submerged areas have been struggling with inadequate relief, locals said.
Some flood victims have been evacuated from several flood-hit areas while many others remain stranded. The shortages of pure drinking water and food intensified the suffering of the marooned people.
Moreover, schools and colleges in the worst-affected areas have been declared closed due to the flood.
Floodwater started receding from Jaintapur, Companiganj, Gowainghat, Kanaighat and Zakiganj of Sylhet.
The displaced people started returning home following further improvements in the flood situation on Sunday.
The water level of Kushiyara at Amalshid and Sheola in Sylhet has declined but flowing above the danger levlel, according to FFWC.
The water level of Old Surma at Derai points of Sunamganj has declined but flowing above danger level while the water level of Someswari at Kalmakanda point of Netrokona district has increased and following above danger level, it said.
Thousands of fish farmers have lost their fish, while hundreds of farmers lost their crops in Sylhet and Sunamgaj.
At least 8,772 fisheries, including ponds and hatcheries, were washed away and 2,534 hectares of Boro went underwater.
In Sylhet, so far 8,322 fisheries have been washed away in 11 upazilas while 1,704 hectares of Boro and 1,600 hectares of Aush were flooded.
In Sunamganj, 829 hectares of Boro and 20 hectares of freshly cultivated paddy were flooded.
The Brahmaputra-Jamuna and Ganges-Padma rivers are in rising trend. Except for the Surma-Kushiyara, the major rivers of the north-eastern region of the country in the upper Meghna basin are on a rising trend, according to FFWC.