Floods continue to pour in, and many hydroelectric reservoirs continue to release water.
Due to the impact of storms and heavy rain, 19 hydroelectric reservoirs across the country were forced to open their floodgates to ensure flood control capacity and safety for downstream areas.
Floods arrived in rapid succession, forcing many reservoirs to release water.
On the morning of September 30th, the amount of water flowing into hydroelectric reservoirs from upstream increased sharply. To reduce pressure and ensure flood control capacity, 19 hydroelectric reservoirs nationwide had to simultaneously open their spillways, contributing to flood mitigation and reduction in downstream areas.
In the North, the Tuyen Quang hydroelectric reservoir opened two deep spillway gates with a total flow rate of over 1,847 m³/s, of which water discharged through the spillway accounted for 1,246 m³/s.
Thac Ba Reservoir also discharged more than 1,284 m³/s through its two surface spillway gates. Notably, Hoa Binh Reservoir opened two gates from the evening of September 29th, with a total discharge of 5,705 m³/s, almost equivalent to the inflow of water into the reservoir.
In Thanh Hoa, Trung Son reservoir had to open 5 surface sluice gates, with a total flow rate of over 1,110 m³/s.
In Nghe An province, Ban Ve reservoir has one gate open, releasing 356 m³/s while the inflow into the reservoir is over 2,000 m³/s.
In Quang Tri, the hydroelectric reservoir of the same name opened one spillway gate at a flow rate of 49 m³/s.
Not only in the North and Central regions, but also many hydroelectric reservoirs in the Central Highlands and South Central region are releasing floodwaters, such as Song Bung 2, Song Bung 4, Song Ba Ha, An Khe, Se San 3A, Se San 4, Pleikrong, Se San 3, Ialy, Buon Tua Srah, Srepok 3, Buon Kuop and Don Duong.
According to Vietnam Electricity Group (EVN), despite the simultaneous release of water, all hydropower plants under EVN and its power generation corporations remain safe. Operational procedures were followed correctly, both preventing downstream flooding and ensuring dam safety amidst the impact of Typhoon No. 10.