As of 6:00 a.m. on November 7, 2025, according to an update from Vietnam Electricity Group, Hoa Binh Lake recorded upstream water levels at elevation of 116.67m; water flow to the lake reached 2,112m3/s; total discharge was 3,816m3/s.
Implementing the inter-reservoir operation process in the Red River basin, Hoa Binh Hydropower Plant opened a bottom spillway gate at 5:00 p.m. on November 6, 2025 to ensure flood prevention. After opening the bottom spillway, the water flow downstream is about 3,970m3/s.
At Tuyen Quang Lake, by 6:00 a.m. on November 7, the upstream water level reached 119.34 m; the water flow to the lake reached 267 m3/s; the total discharge was 691.41 m3/s. Implementing the inter-reservoir operation process in the Red River basin, Tuyen Quang Hydropower Plant opened 1 bottom spillway gate of Tuyen Quang Hydropower Plant at 10:00 a.m. on November 5, 2025.
As of 6:00 a.m. on November 7, Son La Lake had an upstream water level of 216.5 m; water flow to the lake was 1,389 m3/s; total discharge was 1,681 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, by 6:00 a.m. on November 7, the upstream water level reached 294.96 m; the water flow to the lake reached 1,417 m3/s; the total discharge was 1,519 m3/s. Currently, Lai Chau Hydropower Plant is opening a facial opening.
A similar situation occurred at Thac Ba Lake, where the upstream water level reached 58.05m; the water flow to the lake reached 203m3/s; the total discharge was 234.9m3/s. Currently, Thac Ba Hydropower Plant also maintains 1 spillway.
In the context of complicated heavy rain, the flexible operation of hydroelectric reservoirs, ensuring safety downstream is considered a key factor in natural disaster prevention in the North.
According to the National Center for Hydro-Meteorological Forecasting, on the evening of November 6, storm No. 13 Kalmaegi made landfall in Vietnam.
Natural disaster risk level: level 4 for the sea area from Quang Ngai to Dak Lak (including Ly Son special zone); mainland east of Quang Ngai to Gia Lai, North Dak Lak; Level 3 for the west of the Central East Sea, sea area from South Quang Tri to Da Nang (including Cu Lao Cham island) and Khanh Hoa; mainland from South Quang Tri to Da Nang, South Dak Lak province and North Khanh Hoa province.
At 7:00 a.m. this morning, the storm will continue moving west-northwest at a speed of 30km/h, the center of the storm will be in the Southern Laos area and gradually weaken into a tropical depression.
The strongest wind will reach level 6, gusting to level 8. Natural disaster risk level: Level 3 for the sea area from South Quang Tri to Da Nang (Cu Lao Cham island), Ly Son and Khanh Hoa special zones; mainland from South Quang Tri to Da Nang, south of Dak Lak province and north of Khanh Hoa province.
By 7:00 p.m. today, the tropical depression will move to the eastern part of Thailand and weaken into a low pressure area.
Due to the impact of storm No. 13, the area from Da Nang to Dak Lak will have very heavy rain with common rainfall of 150-300mm, locally over 450mm; the area from South Quang Tri to Hue, Khanh Hoa and Lam Dong will have heavy rain with common rainfall of 100-250mm, locally very heavy rain over 400mm. From November 8, heavy rain in the above areas tends to decrease.
The area from Thanh Hoa to North Quang Tri will have moderate rain, heavy rain with common rainfall of 50-150mm, locally very heavy rain over 200mm. Warning of the risk of heavy rain (>200mm/3 hours).
