The flood protection dyke was overrun by the flood.
According to the People's Committee of Hai Lang district, a low-lying area, the province's rice granary, often suffers from flooding every year. To prevent minor floods and early floods, a 56km long dike has been built here for a long time, passing through 10 communes and 1 town in Hai Lang. The dike is made of earth, with a surface width of 3m to 5m, and has now been reinforced with concrete on 3 sides.
Over time of use and frequent exposure to natural disasters, currently along the left and right banks of the Mai Linh, O Lau, O Giang, Tan Vinh Dinh, and Cuu Vinh Dinh rivers, the riverbeds are silted up, and the currents are deeply ingrained close to the foot of the dike, posing a direct threat to the safety of the project.
Due to the characteristics of rivers with relatively narrow cross-sections, large bending coefficients and complex flow regimes, riverbank erosion occurs; especially during the rainy season, many locations along the route are severely eroded and collapsed, affecting the flood prevention quality of the dike.
For example, the Ben Tam - Huynh Thuong, Hoi Cut, Hoang Ha, Dong Soi, Ha Cui dikes are isolated and close to the riverbank, the dike cross-section is narrow, and floods often overflow; the Cuu Vinh Dinh dike has serious landslides; the opening and closing sluice system of the Vinh Dinh dike section through Kim Long village (Hai Que commune) has subsided, causing difficulties in flood control work...
“Currently, riverbank erosion is occurring in many areas along the route, posing a risk to the safety of the works, including some locations with eroded tray toes, eroded dike slopes, and subsidence of the dike body. Therefore, the dike sections with eroded banks, eroded tray toes, damaged dike slopes and body are not yet able to prevent minor floods and early floods,” informed the leader of the Hai Lang District People’s Committee.
Need to invest in upgrading flood protection dykes
According to the Department of Agriculture and Rural Development (DARD) of Quang Tri province, the dike system to prevent early and minor floods in Hai Lang district was invested in and built a long time ago. Up to now, some construction items have been degraded and damaged due to annual floods and natural disasters causing landslides; the riverbed has narrowed and silted up, affecting drainage capacity; the height of the dike crest in some sections is not guaranteed.
To promptly resolve this issue, the Department of Agriculture and Rural Development has developed and proposed the People's Committee of Quang Tri province to include it in the province's medium-term public investment plan for the period 2026-2030 to invest in repairing and upgrading a number of key locations of dykes and flood drainage channels in the Hai Lang lowland area.
The Department of Agriculture and Rural Development has developed and proposed the Ministry of Agriculture and Rural Development to consider synthesizing and including in the medium-term public investment plan for the period 2026-2030 the capital managed by the Ministry to implement the project Upgrading the dyke system and flood drainage system in the low-lying area of Hai Lang. The scale of this project is to upgrade the dyke lines with a length of about 56km; renovate and expand the flood drainage axes with a length of about 50km; upgrade and expand the pumping stations combined with irrigation and drainage, with a proposed budget of 500 billion VND.
In the immediate future, to facilitate agricultural production in the region and ensure construction safety, especially during floods, the Department of Agriculture and Rural Development of Quang Tri province requests the People's Committee of Hai Lang district to proactively review, balance, and allocate funds to prioritize the implementation of solutions to repair and reinforce landslide and damaged areas.
