According to reservoir operation data, at 11:00 AM on July 20, Hoa Binh reservoir had an upstream water level of 103.28 m, 13.72 m lower than the normal water level. The water flow to the reservoir reached 3,766 m3/s, total discharge volume 4,264 m3/s, of which discharge through the spillway was 1,534 m3/s and through the plant was 2,730 m3/s.
Son La Lake has a water level of 198.89 m, 16.11 m lower than the normal water level. Water flow to the lake reached 3,682 m3/s, total discharge volume 3, 215 m3/s.
At Lai Chau reservoir, the water level is at 284.52 m, lower than the normal water level by 10.48 m. The inflow to the reservoir reached 1,742 m3/s, the total discharge volume is 1,506 m3/s.
Tuyen Quang Lake has a water level of 104.79 m, 15.21 m lower than the normal water level. Water flow to the lake reached 1. 170 m3/s, total discharge volume 730.24 m3/s.
Thac Ba Lake has a water level of 52.26 m, lower than the normal water level by 5.74 m. Water flow to the lake reached 535 m3/s, total discharge volume 291.71 m3/s.
At Ban Chat reservoir, the water level is at 469.26 m, lower than the normal water level by 5.74 m; water inflow is 436 m3/s, total discharge is 176 m3/s.
Huo Huoi Quang Lake has a water level of 369.77 m, 0.23 m lower than the normal water level. Water flow to the lake reached 392 m3/s, total discharge volume 341 m3/s.
According to the forecast of the National Center for Hydro-Meteorological Forecasting, on July 20, the mountainous and midland areas of the Northern region will have moderate rain, heavy rain and thunderstorms, locally very heavy rain; the delta will have showers and thunderstorms in some places at night, scattered showers and thunderstorms during the day, locally heavy rain. Rain concentrates in the late afternoon, night and early morning.
The area from Nghe An to Da Nang and the east of provinces from Quang Ngai to Dak Lak will be hot, with intense heat in some places with the highest temperature commonly 35-37 degrees Celsius, in some places above 37 degrees Celsius.
The Southern region in the late afternoon and night has showers and thunderstorms in some places, sunny during the day.
