On the morning of November 3rd, the Steering Committee for Disaster Prevention and Search and Rescue (PCTT&TKCN) of Thua Thien Hue province announced that heavy to very heavy rain is forecast in the area from the evening of November 3rd to November 9th. The total rainfall for the entire period is expected to be between 500 and 850mm, with some areas exceeding 1,000mm.
This rainfall will cause major flooding and waterlogging in low-lying areas, and potentially flash floods and landslides in hilly areas and along rivers and streams.
To proactively respond to heavy rains and floods, the People's Committee of Thua Thien Hue province has issued a directive requesting heads of units and localities to monitor forecast information and developments of heavy rains and floods, and to avoid being caught off guard by floods in order to ensure the safety of lives and minimize property damage for the people.
Many reservoirs and hydroelectric dams in Quang Nam and Thua Thien - Hue provinces are regulating water levels to lower them ahead of warnings of heavy rain.
According to Mr. Dang Van Hoa, Chief of the Office of the Steering Committee for Flood and Storm Prevention and Control and Search and Rescue, the water level of Binh Dien Reservoir at 7:00 AM on November 3rd was +77.41m, with an inflow of 230m3/s and an outflow to the downstream area of 514m3/s. Meanwhile, reports indicate that Ta Trach Reservoir has reached its lowest water level to accommodate the flood, with reduced operating flow, and the water level of the Huong River at Kim Long is at a low of 1.3m.
To quickly lower the reservoir water level and create flood control capacity, the Command Board requested continued adjustment of the operating flow rate of the Binh Dien hydropower reservoir through the spillway and turbines, gradually increasing the flow rate to avoid sudden surges, ranging from 650 to 900 m3/s, and adjusting operations according to the actual inflow situation into the reservoir.
Previously, on October 30th, the Steering Committee for Flood and Storm Prevention and Control and Search and Rescue issued an order to regulate the Huong Dien hydropower reservoir's flow through the spillway and turbines with a gradually increasing flow rate, avoiding sudden surges, ranging from approximately 400 to 700 m3/s.
At the same time, increase the operating flow rate of the Ta Trach reservoir through the spillway and turbines with a gradually increasing flow rate, avoiding sudden surges, ranging from approximately 350 to 700 m3/s.
In Quang Nam province , the Provincial Steering Committee for Flood and Storm Prevention and Control and Search and Rescue announced that, in order to proactively respond to prolonged heavy rainfall, the Committee requested the Song Bung 2, Song Bung 4, Dak Mi 4, and Song Tranh 2 hydropower reservoirs to proactively calculate and organize operations to ensure that the reservoir water level does not exceed the lowest flood-receiving water level and to switch to operating mode according to procedure 1865.
The A Vuong Hydropower Joint Stock Company is required to gradually lower the water levels of the hydropower reservoirs to 370m before 7:00 AM on November 5th. Operation will begin at 7:00 AM on November 3rd.
From the morning of November 3rd, rain began in many central provinces, with very heavy rain in Thua Thien - Hue.
The committee requires that the operational organization ensure that it does not cause sudden or abnormal water flow that directly threatens the lives and property of people in the downstream riverside area of the reservoir.
Hydropower reservoir owners are organizing a rigorous duty roster, closely monitoring weather information and flood conditions. At the same time, they are strengthening notifications and warnings to ensure the safety of people and related activities on rivers and streams in downstream areas before operating, regulating water levels, starting water releases for power generation, or in cases of sudden increases in downstream discharge.
In Nghe An province , representatives from the Standing Office of the Provincial Steering Committee for Flood and Storm Prevention and Control and Search and Rescue stated that water levels in reservoirs and hydroelectric dams are currently at safe levels, ready to receive floodwaters. When the rains arrive, plans and scenarios will be developed to regulate water flow downstream depending on the actual situation, ensuring dam safety as well as the lives and property of the people.
As of 12 noon today, moderate to heavy rain is beginning in Quang Nam, Da Nang, Thua Thien - Hue, and Quang Tri, while heavy rain started in Thua Thien - Hue at 8 am on November 3rd. Meanwhile, Quang Binh, Ha Tinh, and Nghe An are currently without rain.
According to forecasts from the General Department of Meteorology and Hydrology (Ministry of Natural Resources and Environment), from November 3-10, the Central region may be affected by several severe weather patterns causing heavy rain, including: a low-pressure vortex in the southern and central East Sea; frequent strong cold fronts; and strong easterly winds at altitudes from 1,500-5,000 m.
Warning of the risk of widespread heavy rainfall, especially intense downpours, causing major flooding exceeding alert level 3, widespread inundation, flash floods, and landslides in mountainous areas.
After November 10th, heavy rainfall in Central Vietnam is expected to continue in a complex manner, with the possibility of 2-3 more periods of heavy rain. Specifically, the first half of November 2024 will be concentrated in the provinces from Ha Tinh to Quang Ngai, and the beginning of December 2024 will be concentrated in the provinces from Quang Binh to Phu Yen.
Reporters' Team
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