According to the National Center for Hydro-Meteorological Forecasting, in the Red River basin, the water level of the Thao River at Yen Bai and Phu Tho stations is changing slowly, with an upward trend. At 7:00 AM on July 23, the water level in Yen Bai was 25.53 m, in Phu Tho 12.60 m.
On the Lo River, the water level in Tuyen Quang and Vu Quang fluctuates due to rain and is affected by the regulation of hydropower on the upper line. At 7:00 AM, the water level of the Lo River in Tuyen Quang was 15.74 m, in Vu Quang 8.16 m. A flood is likely to appear upstream of the Lo River; the water level downstream of the Lo River tends to rise.
The flow to Hoa Binh reservoir on the Da River fluctuates according to the regulation of the upper hydropower line and the impact of rain in the basin. At 7:00 AM on July 23, the flow to Hoa Binh reservoir reached 3,909 m3/s.
The water level downstream of the Red River at Hanoi station is fluctuating according to the regulation of the upper hydropower line and the influence of tides. At 7:00 AM, the water level at the station was 3.56 m.
In the Thai Binh river basin, the water level of the Cau River at Dap Cau, the Thuong River at Phu Lang Thuong and the Luc Nam River at Luc Nam are changing slowly, affected by tides. In which, upstream of the Thuong River is likely to have small floods. The water level of the Thai Binh River at Pha Lai is also changing slowly and affected by tides; in the next 36 hours, the highest forecast water level is 1.30 m, the lowest is 0.90 m.
In the North Central region, the water level upstream of the Ma River changes slowly, the midstream fluctuates according to reservoir regulation, the downstream at Giang station fluctuates according to tides. It is forecasted that the water level upstream of the Ma River will fluctuate, the midstream will continue to fluctuate according to reservoir regulation, and the downstream at Giang station will fluctuate according to tides.
On the Ca River, the upstream water level changes slowly, the midstream fluctuates according to reservoir regulation, and the downstream fluctuates according to tides. The water level at Nam Dan 1 station at 7:00 AM on July 23rd was 0.05 m.
In the La River basin, the water level of the Ngan Sau and Ngan Pho rivers changes slowly, the downstream of the La River fluctuates according to the tide. The Gianh River has the upstream water level fluctuating, the downstream fluctuating according to the tide. The water level of the Huong River changes slowly; at Kim Long station at 7:00 am it is 0.50 m.
In the South Central Coast, the water level of the Vu Gia River and the central and upper reaches of the Thu Bon River fluctuates slowly; the lower reaches of the Thu Bon River fluctuates according to the tide. The water level of the Thu Bon River at Cau Lau at 7 am is -0.20 m.
The water level of the Tra Khuc River fluctuates according to reservoir regulation and the influence of tides. At Tra Khuc station, the water level at 7 am is 1.44 m.
The water level of the Kon River at Thanh Hoa station fluctuates slightly according to the operation of the irrigation works, reaching 6.87 m at 7:00 AM. The downstream of the Ba River continues to fluctuate due to the influence of upstream hydropower regulation and tides.
In the Southeast region, the water level of the Dong Nai River at Ta Lai station is changing slowly, with a downward trend; at 7:00 am it is 110.69 m. It is forecasted that the water level will continue to change slowly and fluctuate according to upstream reservoir regulation.
The water level of the Be River at Phuoc Hoa station fluctuates strongly according to the regulation of the reservoir; at 7:00 am it is 19.99 m.
In the Mekong River basin, the water level of rivers fluctuates according to the regulation of hydropower reservoirs. The water level of the Krong Ana River changes slowly. At Giang Son station, the water level at 7 am is 414.71 cm according to the data shown in the original table.
The water level at the headwaters of the Mekong River fluctuates according to the tide with a gradually decreasing trend. On July 22, the highest water level on the Tien River at Tan Chau is 1.58 m, on the Hau River at Chau Doc is 1.66 m. It is forecasted that by July 27, the highest daily water level on the Tien River at Tan Chau will be 1.30 m, and on the Hau River at Chau Doc will be 1.35 m.
