According to the National Center for Hydro-Meteorological Forecasting, floodwaters continued to rise along the lower Luc Nam and Thuong rivers in Bac Ninh over the past 12 hours.
At 7 am on August 23, the Luc Nam River reached 6.45 metres at Luc Nam station, 0.15 metres above the highest warning level. The Thuong River stood at 5.47 metres at Phu Lang Thuong station, 0.17 metres above the second warning level.
The lower Luc Nam is forecast to continue rising and remain above the highest warning level over the next six to 12 hours, while the Thuong is expected to rise but stay below that level.
Over the following 12-24 hours, water levels on both rivers are forecast to fluctuate around or above the highest warning level. Flood levels on the lower Luc Nam and Thuong rivers.
Rivers across northeastern Vietnam are expected to remain high from August 23 to 25.
The Thuong, Luc Nam, Trung, Ky Cung, Bac Giang, Bang Giang and Cau rivers could peak at the second or third warning levels, with some exceeding the highest level.
On the Thai Binh River in Haiphong, water levels at Pha Lai station are forecast to rise to between the first and second warning levels.
Authorities warned that flooding could inundate low-lying and riverside areas, disrupting transport, agriculture, aquaculture and daily life.
There is also a high risk of flash floods on small rivers and streams and landslides on steep slopes in Quang Ninh, Lang Son, Bac Ninh, Cao Bang and Thai Nguyen.
The flood-related disaster risk has been set at level three. Residents in riverside, low-lying and landslide-prone areas have been advised to closely follow forecasts and warnings and take precautions to protect lives and property.