Dhaka, April 29 -- Heavy to very heavy rainfall across the country has caused four rivers to overflow their danger levels.

Low-lying areas of Moulvibazar and Netrokona have been inundated, while the low-lying sections of the Sylhet, Habiganj, and Sunamganj districts are at risk, according to the Flood Forecasting and Warning Centre (FFWC) of the Water Development Board (WDB).

Among them, the Bhogai-Kangsa River in Netrokona district is flowing 82cm above the pre-monsoon danger level, the Someswari River is flowing 50cm above the pre-monsoon danger level, the Mogra River is flowing 2cm above the pre-monsoon danger level, and the Manu River in the Moulvibazar district is flowing 72cm above the pre-monsoon danger level.

A steep pressure g...