According to Hoa Binh Hydropower Company, at 10:00 a.m. on September 10, the upstream water level of Hoa Binh Lake was at 111.45 m, the flow to the lake was 4,115 m3/s, and the flow discharged downstream was 5,587 m3/s.
Pursuant to Official Dispatch No. 6722 dated September 10 of the Minister of Agriculture and Rural Development, Hoa Binh Hydropower Company closed 1 bottom spillway gate at 12:00 p.m.
At the same time, continue to maintain 1 bottom discharge gate until further instructions.
Also according to Hoa Binh Hydropower Company, the total water flow discharged downstream including through the spillway gate and the power generation flow through the generator when closing one gate is 3,900 m3/s.
Previously, on September 4, the Minister of Agriculture and Rural Development ordered the Director of Hoa Binh Hydropower Company to open one bottom spillway gate of Hoa Binh Hydropower Reservoir. Then, the second bottom spillway gate was opened at 2:00 p.m. on September 8.
