Rivers in Sylhet and Sunamganj districts swelled to the danger level due to heavy rains and onrush of water from bordering India, said the Sylhet Water Development Board. Besides, heavy rains are expected in the next 24 hours in the northeastern part of the country and adjoining Tripura in India. And so, the water of bordering rivers including several rivers of Sylhet and Sunamganj may flow over the danger level, AKM Niloy Pasha, sub-divisional engineer of Sylhet Water Development Board. The water level of almost all the rivers in Sylhet is increasing due to the onrush of water and ongoing rains. The water level of Surma River in Kanaighat upazila has already crossed the danger level. Read: Heavy rainfall warning for Khulna, Ctg & Barishal According to the Sylhet Water Development Board, the water level of Surma River is flowing at 12.75 cm above the danger level in Kanaighat area which was at 0.59 cm above the danger level at 6 am on Friday while, in Sylhet, it is flowing at 10.80 cm above danger level and 7.8cm over the danger level in Sunamganj. Kushiyara River in Sheola is flowing at 13.5cm above the danger level while Sari river in Goaighat area is 12.35 cm above the danger level.  Read: Cyclone ‘Asani’ over Bay: Heavy rainfall likely in 3 divisions Meanwhile, 126 mm rainfall was recorded in Sylhet district on Friday, according to Bangladesh Meteorological Department (BMD). Saeed Ahmad Chowdhury, a senior meteorologist at the Sylhet Meteorological Office, said there is a possibility of rains to continue in Sylhet till May 18. There will be more rains at night than during the day.