Spillway discharge of Song Sao reservoir and Chi Khe hydroelectric reservoir
(Baonghean.vn) - Responding to the circulation of storm No. 6, Sao River reservoir was discharged and Chi Khe Hydropower Plant also discharged to regulate the reservoir.
![]() |
Prolonged heavy rain has caused the water level of Song Sao reservoir located in Nghia Lam commune, Nghia Dan to exceed 75.83/75.7m. Photo: Van Truong. |
Prolonged heavy rain has caused the water level of Song Sao reservoir located in Nghia Lam commune, Nghia Dan to exceed 75.83/75.7m.
To proactively respond to storm No. 6,Song Sao Lake1.5 spillways, discharge capacity 280m3/s. Discharge time starts from 4:00 a.m. on September 25 until the water level reaches the process level of 75.7m.
![]() |
Workers are operating the spillway of the Song Sao reservoir. Photo: Van Truong |
Mr. Hoang Tran Lam - Chairman of Phu Quy Irrigation Company Limited said: 24 hours before the spillway discharge, Phu Quy Irrigation Company Limited notified the People's Committee of Nghia Dan district, and 4 units in the area including Nghia Binh, Nghia Trung communes, Nghia Dan town (Nghia Dan district) and Quang Phong ward, Thai Hoa town. However, due to the low flow rate, it will not affect the downstream area.
![]() |
Song Sao Reservoir is discharged through 1.5 spillways, discharge capacity is 280m3/s. Photo: Van Truong |
To ensure the safety of the reservoir during the rainy season, at Song Sao reservoir, there are always staff and workers on duty 24/7 to operate, monitor rainfall and water levels, and check the current status of the project.
To ensure reservoir safety, Chi Khe Hydropower Joint Stock Company has also announced reservoir regulation.
![]() |
Chi Khe Hydropower Joint Stock Company releases floodwaters. Photo: Archive |
Accordingly, the Companyflushat 13:30 on September 25, 2021. Estimated discharge volume is about 500m3/s to 1,200m3/s (including discharge through the valves and generation flow through the generators).
Discharge end time when water flow to Chi Khe hydroelectric reservoir drops below 500m3/S.
In Document No. 153/TB.VP-PCTT, the Standing Office of the Steering Committee for Natural Disaster Prevention and Control andsearch and rescueThe province informs the People's Committees of Con Cuong, Anh Son, Do Luong, Thanh Chuong, Nam Dan, Hung Nguyen districts and Vinh city and the heads of provincial departments, branches and sectors; the Road Management Department II is informed to notify the authorities at all levels, agencies, units, investors who are constructing along the river, on the river, owners of water transport vehicles and all people in the area downstream of Chi Khe Hydropower Joint Stock Company to know and carry out necessary work, to ensure the safety of life and property of the people and the State.

Ban Ang Hydropower Plant will discharge flood water at a flow rate of 500 - 1,000 m3/s.
(Baonghean.vn) - From 1:45 p.m. on July 24, Ban Ang Hydropower Plant, Tuong Duong district will discharge flood water with a flow rate of 500 - 1,000 m3/s.

Chau Thang Hydropower Plant announces flood discharge
(Baonghean.vn) - Due to the influence of the tropical depression weakening from storm No. 3, Nghe An area has heavy to very heavy rain. To ensure the safety of the reservoir, Chau Thang Hydropower Plant announced flood discharge.