By 10 a.m. on Tuesday, due to heavy rainfall, the Cu De River reached flooding stage while the Tuy Loan River is prone to jump its banks, and the Cam Le River overflowed its banks, sending a large amount of water to flood a low-lying section of Thang Long Street in Cam Le District.

Meanwhile, reservoirs of Song Bung 4 and Dak Mi 4 hydropower plants are discharging water into the downstream of the Vu Gia River. Hydropower plants have increased water release from their reservoirs into the downstream of the Vu Gia River in order to make sure that water levels are lowest at their reservoirs in an effort to cope with heavy rains which could trigger flooding in the downstream areas of Vu Gia and Thu Bon rivers

Overflowing Cu De River River caused flooding in low-lying areas in Nam Yen Village, Hoa Bac Commune, Hoa Vang District. Photo: HOANG HIEP.

At 10:00am on Tuesday, the amount of floodwaters flowing into Dak Mi 4 hydropower plant’s reservoirs increased to 1,672m³/s while discharges from reservoirs of this hydropower plant into the downstream of the Vu Gia River and the Thu Bon River were 657m³/s and 101m³/s, respectively. In addition, Song Bung 4 hydropower plant’s reservoirs received 1,251m³/s of floodwaters while discharges from reservoirs of this hydropower plant into the downstream of the Vu Gia River were 206m³/s.

Meanwhile, the amount of floodwaters flowing into Song Tranh 2 hydropower plant increased to 2,512m³/s discharges from reservoirs of this hydropower plant into the downstream of the Thu Bon River were 1,438m³/s.

Viet Nam’s National Centre for Hydro-Meteorological Forecasting (NCHMF) has issued flood warnings for rivers in the parts from Quang Binh to Phu Yen, including Da Nang, from Tuesday through Saturday, November 18 as these rivers could face flood risk. The water level in rivers in Quang Binh, Quang Tri, Binh Dinh, and Northern Phu Yen Province is likely to reach its peak to reach alarm levels 1 to 2, and above while that in rivers in the parts from Thua Thien- Hue to Quang Ngai, including Da Nang, is expected to reach alarm levels 2 to 3, and above.

National forecasters have also issued warnings of flash floods and landslides for mountainous areas, and localized flooding alerts are in place in low-lying and riverside areas, plus urban areas. The alert spans the parts from Quang Binh to Phu Yen, including Da Nang.

The Mid-central Region Centre for Hydro-Meteorological Forecasting predicts moderate to heavy rain to continue in Da Nang from 10 a.m. on Tuesday into 10 a.m. on Thursday, November 16, with some areas experiencing very heavy rainfall and thunderstorms.

The heavy rain in the city could see between 100mm and 250mm fall in Cam Le and Hoa Vang districts, with up to more than 300mm possible in some places.

As much as 80mm-200mm of rain could fall in the remaining districts of Da Nang, and even more than 250 mm in some places.

As per the regional weather service, from Thursday into Friday, November 17, moderate to heavy rainfall is expected to continue lashing across Da Nang, with extremely heavy rain and thunderstorms likely in some places. Thunderstorms can produce tornadoes, lightning, hail and strong winds, regional forecasters have warned.

During the forecast period, the total rainfall amount will be 50mm-150mm in common in the city while more than 200mm of rain could fall in some places.

The Da Nang Steering Committee for Disaster Response and Search and Rescue is urging authorities at local level and relevant units to take proactive and necessary mitigation measures in response to widespread heavy rain which could trigger flooding in urban areas, flash floods and landslides in mountainous areas and flooding in low-lying and riverside areas in the coming days.

Some areas in the Nam Yen Village in Hoa Bac Commune, Hoa Vang District were submerged under as much as 0.6m of water. Photo: HOANG HIEP.

The Cam Le River has overflowed its banks, sending a large amount of water to flood a low-lying section of Thang Long Street. Photo: TRAN TRUC

The Tuy Loan River is prone to jump its banks. Photo: TRAN TU

Reporting by HOANG HIEP – Translating by H.L