Accordingly, at 12 PM on August 4, the water level upstream of Thac Ba reservoir was at an elevation of 57.35m, with an inflow of 750 m3/s and an outflow of 265 m3/s.
Following the inter-reservoir operation procedure on the Red River basin, the Minister of Agriculture and Rural Development (MARD) ordered the Director of Thac Ba Hydropower Joint Stock Company to open 1 surface spillway gate of Thac Ba hydropower reservoir at 7 PM on August 4.
Thac Ba Hydropower Joint Stock Company is to closely monitor the developments of rain and floods, the safety of the structure, the inflow to the reservoir, and the water levels upstream and downstream of the reservoir, and promptly report to the MARD and relevant agencies as per regulations.
On the same day, the MARD issued a document to the People's Committees of the provinces and cities: Yen Bai, Phu Tho, Vinh Phuc, Hanoi regarding ensuring downstream safety during the operation of Thac Ba hydropower reservoir.
In this document, to ensure the safety of the structure and activities along the river, the MARD requested the People's Committees of the aforementioned provinces and cities to immediately notify all levels of government, residents, and organizations operating on or near the river; aquaculture facilities, water transport vehicles; ferry terminals. Additionally, they should review and ensure the safety of ongoing construction projects; sand and gravel extraction, collection, and transshipment activities should be informed about the flood discharge from Thac Ba hydropower reservoir to proactively take preventive measures to ensure the safety of people and property.
The People's Committees of the provinces and cities should direct relevant agencies and units to coordinate with the reservoir owner to implement safety measures for curious residents approaching the flood discharge area; at the same time, promptly report and propose solutions to handle any unusual situations that may arise during the flood discharge process.
