The impact of storm No. 10 (Bualoi) and prolonged heavy rain in late September caused the water flow to Hoa Binh Lake to increase.
In that situation, the National Steering Committee for Natural Disaster Prevention and Control and the Ministry of Agriculture and Environment have continuously issued telegrams requesting flexible operation of reservoirs.
According to an update from Hoa Binh Hydropower Company, as of 5:00 p.m. on October 1, the upstream water level of Hoa Binh Lake was at 115.07m; the flow to the lake reached 1,356m3/s, total discharge was 2,478m3/s.
Mr. Pham Van Vuong - Director of Hoa Binh Hydropower Company informed that, implementing the Inter-reservoir operation process on the Red River basin, Hoa Binh Hydropower Reservoir has closed one bottom spillway gate at 11:00 on October 1, currently only maintaining power generation through generators.
Previously, closely following the developments of storm No. 10, Hoa Binh Hydropower Plant was ordered to open the first bottom spillway gate at 8:00 p.m. on September 29 and continue opening the second bottom spillway gate at 3:00 a.m. on September 3; by 5:00 p.m. on September 30, 1 bottom spillway gate was closed.
According to Mr. Vuong, the closure and opening of the bottom spillway will depend on hydrological developments, the flow of water and follow the direction of the National Steering Committee for Natural Disaster Prevention and Control.
The upstream - downstream water level and flow parameters to the reservoir are continuously updated, reported to the Ministry of Agriculture and Environment through the Department of Dyke Management and Natural Disaster Prevention, and related agencies.
Thanks to timely regulation, the lake water level is gradually stabilizing, both ensuring the safety of the project and reducing the risk of flooding in the downstream provinces of the Red River such as Phu Tho, Hanoi, Bac Ninh, Hai Phong, Hung Yen and Ninh Binh.
Previously, the National Steering Committee for Natural Disaster Prevention also issued an urgent dispatch to 6 provinces and cities to proactively respond to flood discharge situations.
According to the National Center for Hydro-Meteorological Forecasting, after storm No. 10, water levels on rivers in the North will continue to rise. Some small rivers have floods above alert level 2, some places have exceeded alert level 3, in which the Thao River flowing through Phu Tho has reached a high warning level.
The authorities continue to advise the authorities and people in the downstream area to be vigilant, closely monitor weather developments, and not be subjective to the risk of flash floods and landslides when unusually heavy rain may occur in October.
