According to data from Vietnam Electricity Group, at 4:30 PM on February 18, Tuyen Quang Lake had an upstream water level at an elevation of 114.27 m, lower than the normal water level by 120 m; the inflow to the lake reached about 50 m3/s.
Reservoirs in the Northwest region such as Lai Chau reached 293.86 m (normal water level 295 m), Ban Chat at 457.55 m (475 m), Huoi Quang 369.24 m (370 m).
Son La Lake recorded a water level of 214.6 m, approaching the normal water level of 215 m.
Meanwhile, Hoa Binh reservoir is at 112.62 m, significantly lower than the normal water level of 117 m, and is discharging electricity with a flow rate of about 234 m3/s.
In the North Central region, Trung Son Lake reached 158.66 m (160 m), Ban Ve Lake at 195.75 m (200 m), Khe Bo Lake 64.16 m (65 m). Quang Tri Lake reached 476.93 m, lower than the normal water level by 480 m.
The South Central Coast region recorded many lakes lower than the normal water level by 1–5 m such as A Vuong, Song Bung 2, Song Bung 4, Song Tranh 2, Song Ba Ha. The water flow to the lakes is generally not large, some lakes almost do not have to discharge through spillways.
In the Central Highlands, large reservoirs such as Ialy reached 510.58 m (515 m), Pleikrông 569.67 m (570 m), Se San 4 reached 214.22 m (215 m) all lower than the normal water level.
Some reservoirs discharge water through gates with small flows such as An Khe, Srepok 3, Buon Kuop.
In the Southeast region, Tri An Lake recorded a water level of 61.69 m, approaching the normal water level of 62 m; inflow to the lake is about 90 m3/s.
