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The Steering Committee for Natural Disaster Prevention and Search and Rescue in Ha Tinh Province plans to destroy the Ke Go Lake spillway to ensure the safety of the project, which has yet to be implemented.
Tran Duy Chien, deputy director of the Ha Tinh Irrigation Department, said that on the morning of October 19, when the water level of Ke Go Lake rose to an altitude of 33.8 m, it exceeded the safety threshold of 32, 5 m, the province was considering the contingency plan is to destroy the Ke Go lake overflow.
However, at 7:00 pm tonight, the rains have decreased, the water level is 33.7 m, so the province does not use this plan. According to Mr. Chien, the next plan to regulate the water in the lake is to open two discharge gates, with a flow rate of 840 m3 / second.
Ho Ke Go in a flood. Image: Duc hung
“According to the design, when the lake water rises, the nearly 200 m long troubleshooting overflow will break on its own to ensure the safety of the project. The spillway is a technical language that does not use the hand of work to excavate. “What,” Chien said and said, if it spills, the area downstream of Ke Go Lake will be badly affected.
This morning, the Ha Tinh Steering Committee for Natural Disaster Prevention and Search and Rescue announced that at 8:00 am on October 19, Lake Ke Go discharges with a flow rate of 950 m3 / second; If the rain continues, in 8 hours, the water level in the lake exceeds the height of 35.0 m, which creates a risk of insecurity in the dam.
“The province plans to destroy the incident to discharge floods, this is an urgent situation that must be taken into account,” says the document.
Many places in the city of Ha Tinh are flooded more than a meter deep. Image: Hung Le
At 8 o’clock on the same day, President Ha Tinh Tran Tien Hung ordered the evacuation of the people downstream from the Ke Go Reservoir to safety; of which, more than 43,000 people in Cam Xuyen district, more than 2,600 people in Thach Ha district and 700 people in Ha Tinh city.
From October 18 until now, in Ha Tinh it rains a lot, rainfall in some places exceeds 700 mm. Currently, many communes in Cam Xuyen, Ha Tinh City, Huong Khe, Thach Ha … are deeply flooded and isolated, people have to move things to avoid flooding.
According to the National Center for Hydrometeorological Forecasting, tonight and tomorrow (October 20), heavy rains in Ha Tinh and Quang Binh provinces, there are especially heavy places with rainfall of 100 to 150 mm, some places more than 150 mm; in Nghe An it varies from 20 to 40 mm, particularly in the South, there are places above 50 mm. As of tomorrow night the rain is decreasing.
Ho Ke Go, Cam My Commune, Cam Xuyen District, includes a main dam and 10 auxiliary dams with a capacity of more than 300 million cubic meters of water. The lake water along the main canals is 250 km long, irrigating more than 21,000 hectares of arable land in Cam Xuyen, Thach Ha and Ha Tinh city districts; contribute to fighting flash floods, anti-erosion for downstream areas. It is also one of the largest dam lakes in the country.
Le Hoang – Duc Hung
