Torrential rain overnight caused severe flooding across Lam Dong province, submerging key areas and rendering National Highway 1 impassable. Emergency evacuations were carried out as water levels continued to rise.

In the early hours of December 4, floodwaters surged through the Gọp intersection in Hong Son commune, overtopping National Highway 1 at kilometer marker 1678. The road was submerged from around 2 a.m., stranding dozens of vehicles and shifting sections of the road divider under strong currents.

Residents reported that the water rose rapidly, inundating many homes beyond halfway. Emergency crews were deployed to evacuate people from severely affected areas to safe locations. By morning, powerful currents were still flowing across the highway, sweeping away personal belongings.

In Luong Son commune, the highway was also submerged, forcing long lines of vehicles to stop and wait. To avoid the flooded zone, many drivers had to detour through the coastal road network from Hoa Thang to Mui Ne and Phan Thiet before reconnecting with the highway.

Vo Tien Trung, Chairman of the Luong Son People's Committee, confirmed that the swift rise in floodwaters had flooded numerous homes. Local authorities mobilized personnel to assist residents with moving belongings overnight, ensuring there were no casualties. “This morning, the commune issued an emergency notice for students to stay home for their safety,” Trung stated.

At other points along the highway, such as Hamlet 3 in Hong Son, floodwaters reached dangerous levels, affecting many local households.

Simultaneously, major reservoirs in the area began increasing water discharge, causing water levels downstream to rise further. In Song Luy commune, floodwaters inundated Hamlet 9 in Binh Nghia village, putting elderly residents and children at risk. Local militia and police swiftly moved in to evacuate families from the danger zone.

The Song Luy Commune People's Committee advised all residents not to attempt crossing flooded areas and to monitor weather updates closely to ensure safety.

Meanwhile, at the estuary in Lien Huong commune, strong currents swept away several anchored boats. In the lowland areas of Ham Thuan, Ham Thuan Bac, and Ham Thang ward, floodwaters began rising around 3 a.m., submerging several streets in residential neighborhoods.

That same morning, the Lam Dong Meteorological and Hydrological Station issued an emergency flood alert for the Cam Ly and Luy rivers. The risk of flooding, landslides, and flash floods remains very high.

At Thanh Binh station on the Cam Ly River, water levels reached 834.14 meters - 1.1 meters above level III warning. On the Luy River, the peak was recorded at 29.15 meters, with a slow decline observed.

Forecasts suggest that over the next 6 to 12 hours, the Cam Ly River could rise to 834.30 meters, possibly surpassing its historical peak, while the Luy River may rise again to around 29.10 meters, remaining 0.6 meters above the level III warning.

Communities located along the Cam Ly and Luy rivers - such as Lam Vien, Xuan Huong (Da Lat), Lang Biang, Lac Duong, Nam Ban, Ha Lam, Hong Thai, Bac Binh, and Phan Ri Cua - are facing extreme risk of landslides and deep flooding.