According to the Department of Agriculture and Environment of Lao Cai province, in the past 12 hours, due to the influence of the low pressure area weakened by storm No. 11, Lao Cai province has had moderate to very heavy rain.
Rainfall recorded at some locations such as Trinh Tuong 1: 200.8 mm; Trinh Tuong: 98.2 mm (Trinh Tuong); Yen The: 175.8 mm (Tan Linh); A Mu Sung: 70.2 mm (A Mu Sung); Ban Cam: 81.4 mm; Phong Hai: 74.4 mm (Phong Hai)...
In terms of hydrology, the Thao River at Lao Cai station is rising rapidly; the water level at 1:00 p.m. reached 79.50 m (less than BD1: 0.50 m), at 2:00 p.m. reached 79.70 m and at 3:00 p.m. reached 80.00 m (reaching BD1), at 4:00 p.m. reached 80.20 m.
Yen Bai station changes slowly; Ngoi Thia stream changes slowly according to the regulation of upstream hydropower plants; Chay river at Bao Yen station fluctuates and increases according to the regulation of Bac Ha and Vinh Ha hydroelectric reservoirs.
The water level at 1:00 p.m. on October 7 at Yen Bai station was 27.90 m (under BD1: 2.00 m); Ngoi Thia river 39.94 m (under BD1: 4.56 m); Chay river at Bao Yen 79.22 m (not yet reached the warning level).
On the morning of October 8, according to the reporter of Lao Dong Newspaper on the Red River, the section flowing through Lao Cai Ward showed that the river water was flowing rapidly, but the water level did not rise too high.
In reality, compared to the time of many days of heavy rain due to the impact of storm No. 10, the water level on the river has decreased significantly, revealing sand dunes and large trees in the middle of the river.
Along with that is the damage to crops and short-term vegetables when people cultivate along the flooded riverbank.
It is forecasted that in the next 6 hours, some places in Lao Cai province will have rain, moderate rain, some places will have heavy rain, the accumulated rainfall will be 30 - 50mm, some places will have over 70mm.
From the night of October 7 to October 8, there is a possibility of a flood on rivers and streams in the province, with a flood amplitude of 2-5m.
During this flood, the peak water level of the two floods on rivers and streams is likely to be at level BD1-BD2, some places above level 2. Rising river water levels can cause flooding in low-lying areas along the river.
In addition, due to the impact of heavy rain with high intensity, there is a high risk of flooding in some communes and wards: Lao Cai ward, Cam Duong ward, Muong Khuong commune, Luc Yen commune, Muong Lai commune, Phuc Loi commune, Tan Linh commune, Tran Yen commune... with a flooding depth of 0.3 - 0.5m, some places over 0.6m; flooding time from 30 - 60 minutes, some places have longer flooding time.
The authorities have warned that in the next 6 hours, there is a risk of flash floods on small rivers and streams in mountainous areas; landslides on steep slopes, subsidence; flooding in low-lying areas, along rivers and streams, urban areas.
Some images of the Red River water level recorded on the morning of October 8:
