Major rivers continued to rise across the country amid predictions of heavy downpour to deteriorate the situation, reports BSS.
The Flood Forecasting and Warning Centre (FFWC) in its latest bulletin on Sunday afternoon said all the major rivers "are in rising trend" excepting the Surma in southeastern Sylhet region but it could start rising again depending on rainfalls.
"The rain-fed rivers in all the four main basins of the Meghna, Brahmaputra, Ganges - covering the northeastern, northern, northwestern and central Bangladesh - are on the verge of surpassing their bank lines at different places," an FFWC spokesman said.
He added the rising trend of rivers in Brahmaputra and Meghna basins including the Dharla, Kangsha, Surma and Kushiyara appeared "rapid" which were likely to submerge floodplains in greater Sylhet and greater Rangpur in next 24 hours.
Out of 93 river monitoring points across the country, water levels in 25 points exceeded the danger marks so far, FFWC said.
"Until now the situation has not become alarming, but we are getting ready to face a major deluge," state minister for disaster management and relief Dr Enamur Rahman told the news agency.
But he added the number of affected districts overnight stood at 15 while the figure was 10 on Saturday as flood hit five fresh ones including some in central parts of the country.
Health ministry's flood control room on Sunday reported 11 deaths since July 10, saying six of them drowned while lightening killed three and snakebites two.
Meteorologists said they tallied their data with met office in upstream India which suggested widespread "medium to heavy rainfall" and "very heavy rainfall" in northern, north-eastern Bangladesh alongside adjoining Assam and Meghalaya states in next 24 to 48 hours.
The FFWC said the Brahmaputra-Jamuna and Ganges-Padma rivers were likely to rise further in the next 72 hours and the Jamuna River at Sirajganj "may cross danger level in next 24 hours".
"Flood situation in Netrokona, Sunamganj, Sylhet, Lalmonirhat, Kurigram, Jamalpur, Gaibandha, Bogura and Sirajganj districts may deteriorate in next 24 hours," the centre warned.
