As of 8:00 a.m. on November 17, 2025, according to an update from Vietnam Electricity Group, Hoa Binh Lake recorded upstream water levels at elevation of 116.64m; water flow to the lake reached 146m3/s; total discharge was 1,279m3/s.
Implementing the inter-reservoir operation process in the Red River basin, Hoa Binh Hydropower Plant closed 1 bottom spillway gate at 9:00 a.m. on November 12, 2025. After closing the bottom spillway, the water level in the downstream area of the hydropower dam decreased rapidly.
At Tuyen Quang Lake, by 7:00 a.m. on November 17, the upstream water level reached 119.43 m; the water flow to the lake reached 189 m3/s; the total discharge was 185.65 m3/s.
Implementing the inter-reservoir operation process on the Red River basin, Tuyen Quang Hydropower Plant has closed 1 bottom spillway gate of Tuyen Quang Hydropower Plant, currently only maintaining power generation through generators.
As of 8:00 a.m. on November 17, Son La Lake recorded upstream water levels at 215.77 m; water flow to the lake was 646 m3/s; total discharge was 1,890 m3/s. Currently, the unit has closed all bottom spillways, only maintaining power generation through generators to regulate the flow downstream.
Similar situation occurred at Lai Chau Lake, as of 9:00 a.m. on November 17, the upstream water level reached 294.85 m; the water flow to the lake reached 927 m3/s; the total discharge was 1,645 m3/s. Currently, Lai Chau Hydropower Plant has closed all bottom spillways, only maintaining power generation through generators.
As of 9:00 a.m. on November 17, the upstream water level at Thac Ba Lake was recorded at 58.01 m; the water flow to the lake was 187 m3/s; the total discharge was 270.77 m3/s. Currently, Thac Ba Hydropower Plant has also closed all bottom spillways and spillways, only operating power generation through generators.
Up to this point, all large hydroelectric reservoirs in the North have simultaneously closed to release water, showing that the water source situation has stabilized, creating conditions to ensure safety downstream and maintain stable power production.
According to the National Center for Hydro-Meteorological Forecasting, today, November 17, the strong cold air mass is continuing to move south.
Around this afternoon and tonight, this cold air mass will affect the Northeast and North Central regions, then affect the Northwest, Central Central regions and some places in the South Central region. Northeast wind level 3-4; coastal areas level 4-5.
From tonight and tonight, in the midlands, the Northern Delta and North Central regions, the weather will turn cold, the mountainous areas of the North will be very cold, and the high mountainous areas will have severe cold.
The lowest temperature in this cold air mass in the midlands, Northern Delta and North Central regions will generally be from 12-15 degrees Celsius, mountainous areas from 9-12 degrees Celsius, high mountainous areas below 8 degrees Celsius.
There will be rain and showers in the Hanoi area, and the weather will turn cold from tonight and tonight. The lowest temperature in this cold air mass is generally 13-15 degrees Celsius.
At sea, in the Gulf of Tonkin, the Northeast wind will gradually increase to level 7, sometimes level 8, gusting to level 9, rough seas, waves 3.0-5.0m high.
In the North East Sea, the Northeast wind will gradually increase to level 7-8, gusting to level 9-10, rough seas, waves 4.0-6.0m high.
