As of 7:00 a.m. on November 20, 2025, according to an update from Vietnam Electricity Group, Hoa Binh Lake recorded upstream water levels at elevation of 116.89m; water flow to the lake reached 62m3/s; total discharge was 626m3/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 20, the upstream water level reached 119.48 m; the water flow to the lake reached 379 m3/s; the total discharge was 374.86 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 7:00 a.m. on November 20, Son La Lake recorded upstream water levels at 216.12 m; water flow to the lake was 1,147 m3/s; total discharge was 525 m3/s. Currently, the unit has closed all bottom spillways, only maintaining power generation through generators to regulate the flow downstream.
At Lai Chau Lake, as of 7:00 a.m. on November 20, the upstream water level reached 294.99 m; the water flow to the lake reached 1,152 m3/s; the total discharge was 1,151 m3/s.
To keep the lake's water level not exceeding 295m, Lai Chau Hydropower Plant will open the spillway to regulate the reservoir from 1:00 p.m. on November 19, 2025 to ensure the safety of the project and downstream before the increase in water flow to the lake.
As of 7:00 a.m. on November 20, the upstream water level at Thac Ba Lake was recorded at 58.17 m; the water flow to the lake reached 222 m3/s. Currently, Thac Ba Hydropower Plant has closed all bottom and surface discharge gates, only operating power generation through generators.
Up to this point, most 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 20, cold air has affected most places in the South Central region. In the North and North Central regions, there will be rain and showers.
Due to the influence of the strengthening cold air combined with disturbances in the high-altitude East wind zone, there will be widespread heavy rain in the area from Da Nang to Khanh Hoa.
The North will be cloudy with rain in some places, and the clouds will decrease in the afternoon and evening. The lowest temperature is from 11-14 degrees Celsius, in high mountainous areas it is below 5 degrees Celsius.
The North Central region will have cloudy weather, with rain in some places in the North; and rain in some places in the South. The lowest temperature is from 12-15 degrees Celsius.
Other areas will have cloudy weather, moderate rain, heavy rain, locally very heavy rain and thunderstorms.
