According to updates at 12:45 on September 9, in the Northeast region, Tuyen Quang reservoir has an upstream water level of 114.29 m, lower than the normal water level of 5.71 m and higher than the dead water level by 24.29 m. Inflow to the reservoir is 193 m3/s, total discharge is 90 m3/s.
In the Northwest region, Lai Chau reservoir has a water level of 288.96 m, 6.04 m lower than the normal water level. Inflow to the reservoir is 1,034 m3/s, total discharge is 1,124 m3/s through the spillway.
Son La Lake is at 209.89 m, lower than the normal water level by 5.11 m. Inflow to the lake is 2,083 m3/s, total discharge is 1,527 m3/s.
Hoa Binh Lake has a water level of 109.26 m, 7.74 m lower than the normal water level. Water flow to the lake is 1,107 m3/s, total discharge is 2,170 m3/s through the spillway.
In the North Central region, Trung Son Lake has a water level of 153.9 m, Ban Ve Lake 193.65 m and Quang Tri Lake 475.33 m. These lakes are all lower than the normal water level from about 4.67-6.35 m.
In the South Central Coast, Song Ba Ha reservoir has a water level of 102.33 m, water inflow to the reservoir is 454 m3/s, total discharge is 724 m3/s. The reservoir is opening 4 surface discharge gates.
In the Central Highlands, Ialy Lake has a water level of 510.63 m, lower than the normal water level by 4.37 m; total discharge volume 424 m3/s. Se San 4 Lake has a water level of 214.48 m, lower than the normal water level by 0.52 m, total discharge volume 1,123 m3/s.
In the Southeast region, Tri An reservoir has a water level of 57.34 m, 4.66 m lower than the normal water level. The inflow to the reservoir reached 1,120 m3/s, and the total discharge volume has not been recorded.
Thac Mo Lake has a water level of 211.32 m, 6.68 m lower than the normal water level. Water flow to the lake is 518.87 m3/s, total discharge is 163 m3/s through the spillway.
