Tri An Hydropower Plant increases flood discharge

Tri An Hydropower Company increased the amount of water released through the reservoir's spillway from 8:00 a.m. on October 13.

Tri An Hydropower Company increased the amount of water released through the spillway to regulate the reservoir from 8:00 a.m. on October 13. Photo: Sy Tuyen/VNA

According to Tri An Hydropower Company, at 2:00 p.m. on October 12, the upstream water level of the reservoir reached 61.69 m (design elevation 62 m); water flow into the reservoir reached 1,610 m3/s; water flow through the spillway was 160 m3/s; water flow through the turbine generator was 749 m3/s.

Based on the water level downstream of the river at Bien Hoa hydrological station which has passed the peak of the high tide and is gradually decreasing, based on the water flow into the reservoir, to ensure flood prevention capacity, Tri An Hydropower Company adjusted to increase the amount of water released through the spillway to regulate the reservoir.

Specifically, Tri An Hydropower Company increased the water flow through the spillway to 320 m3/s. The total water flow downstream through the turbine and spillway increased from 1,070 m3/s to 1,140 m3/s, starting from 8:00 a.m. on October 13.

Depending on weather developments, water flow into the lake, water level of Tri An Hydropower Lake, water level downstream of the river at Bien Hoa hydrological station, the Company can change the water flow discharged through the spillway.

According to the Southern Hydrometeorological Station, the water level on the Dong Nai River at Bien Hoa station (downstream of Tri An hydroelectric reservoir) on October 12 fell below alert level I. In the coming days, the water level of the Dong Nai River will continue to fall rapidly.

Meanwhile, the water level at Ta Lai station on Dong Nai river (upstream of Tri An hydroelectric reservoir) is slowly decreasing. At 13:00 on October 12, the actual water level measured at Ta Lai station was 112.23m (0.23m above alarm level I).

Warning: In the next 24 hours, the water level at Ta Lai station on Dong Nai river will continue to decrease slowly and fluctuate at approximately alarm level I.

It is necessary to guard against the possibility of heavy rain, combined with floods causing inundation and landslides on river banks and streams in low-lying areas in Dak Lua, Nam Cat Tien, Ta Lai, Thanh Son, Phu Vinh, Dinh Quan communes (Dong Nai province) and neighboring areas. Tri An hydroelectric reservoir has a capacity of more than 2.7 billion m3 of water, is the largest reservoir in the southern provinces. In addition to its main function of generating electricity with a capacity of 400 MW, supplying electricity to the national grid, Tri An lake also has the function of ensuring water for daily life, agriculture , repelling salinity and regulating floods for the downstream of Dong Nai river.

Source: https://baotintuc.vn/xa-hoi/thuy-dien-tri-an-tang-luong-xa-lu-20251013081957779.htm