Da Nang: On the morning of October 28, many downstream areas were still deeply flooded, traffic was congested.

418342629207071903 (1) — Military forces assist people in evacuating from deeply flooded areas. Source: Da Nang City Military Command

According to updated data from flood warning towers and inundation warning towers in Da Nang city at 6:00 a.m. on October 28, except for Cam Chau area in Hoi An Dong ward which was flooded 2.24m deep, Dong Binh village (Duy Vinh) in Nam Phuoc commune was flooded 1.98m deep, Kieu Chau village (Duy Son) in Duy Xuyen commune was 1.93m deep, Cam Kim area in Hoi An ward was 1.75m deep, La Bong village and An Trach village in Hoa Tien commune were 1.11m deep...

Thang Long Street under the Red Bridge in Cam Le Ward is flooded 1 meter deep, Phuoc Thien Pagoda in Hoa Tien Commune is 0.95 meters deep, Cam Ne Village in Hoa Tien Commune is 0.88 meters deep...

Floodwaters continue to inundate many high areas in the downstream of the Vu Gia - Thu Bon River. Photo: HOANG HIEP

The above mentioned areas are deeply flooded due to floods from the Vu Gia and Thu Bon river systems that continue to rise (large flood flows from upstream as well as impacts from the operation of hydroelectric reservoirs).

By 8:00 a.m. on October 28, the total discharge from hydroelectric reservoirs to Vu Gia and Thu Bon rivers reached 6,500m ³ /s (discharge to Vu Gia river was more than 3,533m ³ /s and Thu Bon river was more than 2,966m ³ /s).

Although the total discharge is lower than the peak at 10:00 p.m. on October 27 (8,500 ^m3 /s), currently the A Vuong and Dak Mi 4 hydropower reservoirs are both full; the Song Bung 4 and Song Tranh 2 hydropower reservoirs are only about 40 cm from the normal water level, so they are focusing on operating to ensure reservoir safety, and are almost no longer able to regulate floods.

Many areas are deeply flooded by floods from Tuy Loan River. Photo: HOANG HIEP

The area of Cam Toai Trung village (Hoa Phong) in Hoa Vang commune is 1.6m deep; the Thai Lai intersection, Thai Lai village (Hoa Nhon), Thach Nham Tay village (Hoa Nhon) in Ba Na commune are 1m, 0.45m and 0.81m deep respectively; Thach Bo and Bo Ban villages (Hoa Phong) in Hoa Vang commune are 0.57m and 0.37m deep respectively.

In addition, floods on the Cu De River are inundating the Loc My and Nam Yen (Hoa Bac) areas of Hai Van ward, with depths of 0.52m and 0.12m respectively.

Flood water levels in all of the above-mentioned deeply flooded areas continue to rise due to large flood flows from upstream.

* Currently, the flood water of Vu Gia and Thu Bon rivers are both above alert level 3. Therefore, the main traffic routes along the basins of these two rivers, such as: DT609, DT609B, DT609C, DT610B... are all being cut off.

Route DT609 through the center of Dai Loc commune is being cut off. Photo: CONG TU

The Department of Construction of Da Nang city said that the flood water of Thu Bon river rose very high, this afternoon it almost submerged the old Cau Lau bridge (connecting Dien Ban ward and Nam Phuoc commune).

3(1).jpg — The flood water of Thu Bon River rose almost to the level of the old Cau Lau Bridge. Photo: DEPARTMENT OF CONSTRUCTION

Mr. Tran Ngoc Thanh, Deputy Director of the City Department of Construction, said that the industry has notified local authorities to request that boat and barge owners must anchor far away from the old Cau Lau bridge, safely and securely to avoid drifting and affecting the safety of the project.

* National Highway 14H currently has many locations deeply flooded, causing traffic jams; some locations have landslides on the slopes. On National Highway 14D, the slopes have collapsed, causing traffic jams at km24+00 (Ben Giang commune). The management unit mobilized vehicles to clear the road and clear the road for the first time. However, it is still raining heavily, and rocks and soil continue to slide down.

1(1).jpg — Overcoming landslides to ensure traffic on National Highway 14D. Photo: CONG TU

Connecting from the coast of Tam Thanh to the border of Quang Ngai province, National Highway 40B was severely damaged. Dozens of landslides occurred, although a section was repaired and opened to traffic, many locations continued to collapse; some locations had horizontal cracks on the road surface or negative slope landslides eroded deep into the foundation, posing a potential risk of road breakage.

National Highway 40B has two horizontal cracks at km90+520 and km90+598, the positive slope shows signs of landslides with the risk of breaking the road. Photo: DEPARTMENT OF CONSTRUCTION

On the provincial road system, Ong Hoi bridge at km41+656 on DT615 route through Viet An commune has a deep erosion of the approach road behind the abutment and the bridge abutment. The management unit of this route said that the bridge has been eroded and broken almost entirely at pier M2, so it has warned of danger and barricaded both ends of the bridge to prevent traffic. Cars need to travel on DT614 route and national highway 14E to avoid Ong Hoi bridge.