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Due to the influence of the tropical depression, as of October 9, Quang Nam province continued to have heavy rains on a large scale, causing many areas in districts such as Nong Son, Dai Loc, Duy Xuyen, Dien Ban Town, Hoi An was flooded.
News broadcast at 3 am on October 10 from the Quang Nam Meteorological and Hydrometeorological Station indicated that the water level in the Vu Gia – Thu Bon, Tam Ky rivers is rising again.
Many areas in Dai Lanh Commune, Dai Loc District, Quang Nam Province are deeply flooded.
The water level at 3 o’clock on October 10 was as follows: in the Vu Gia River in Ai Nghia: 7.73 m (under alarm II: 0.27 m); In the Thu Bon river in Giao Thuy there are 3.97 m (under alert I: 2.53 m); in Cau Lau it is 1.64 m (under alarm I: 0.36 m); in Hoi An it is 1.25 m (under alarm II: 0.25 m); In the Tam Ky river in Tam Ky there are 1.46 m (below alert I: 0.24 m).
Floods on the Vu Gia – Thu Bon and Tam Ky rivers are expected to continue to increase in the next 6 to 12 hours. The flood water level in the rivers is likely to be as follows: In the Vu Gia River in Ai Nghia: 8.70 m (below alert III it is 0.30 m). On the Thu Bon river in Giao Thuy: 6.50 m (at alarm level I); in Cau Lau: 2.20 m (in alert II it is 0.20 m); in Hoi An: 1.45 m (under alarm II it is 0.05 m). On the Tam Ky river in Tam Ky: 1.90 m (above Alert I is 0.20 m).
In the face of heavy rains, the water returned to the hydroelectric reservoirs with high flow, late at night on October 9, the Commander Committee for Fire Prevention and Fighting in Quang Nam Province issued a written request to the units management to operate and regulate water discharge to the A Vuong, Dak Mi and Song Bung hydroelectric reservoirs 4.
The river water in Quang Nam is rising
Specifically, the Quang Nam Provincial Rescue and Information Command requires A Vuong hydroelectric power to operate and bring the lake water level to the height of 370m and maintain the lake water level to the height of 370m; Song Bung 4 hydroelectric power plant operates to lower the lake water level to gradually lower the lake water level to the height of 216 m; The Dak Mi 4 hydroelectric power station operates to bring the lake water level to the height of 251.5 m and maintains the operation to ensure the lake water level to the height of 251.5 m.
The Steering Committee of Floods and Rescue in Quang Nam Province noted that hydroelectric power during operation, if the water level in Ai Nghia hydrological station is higher than + 8.5m, then switch to flood reduction operation for downstream. The operation must guarantee that no sudden or abnormal currents are generated that directly threaten the life and property of people in the riparian zones downstream of the reservoir.
According to the data updated at 7:00 a.m. on October 10, the water level in A Vuong hydroelectric power station is 370.74 m (the flood water level is 370 m), the water flow to the lake is more than 1,088 m3 / s; Song Bung 4 hydropower is at 218.81m (flood water level is 214m), discharge to lake is up to 1,351m3 / s; The hydroelectric energy level of the Dak Mi 4 is 250.79 m (the flood water level is 251 m), the flow to the lake is greater than 368 m3 / s.
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