📋 Tender Overview
Currently, the work of preventing and combating land subsidence, landslides, flooding, drought, and saltwater intrusion still faces three main challenges: Climate change, rising sea levels; increased exploitation and use of water by upstream countries of the Mekong River; urban development, and socio-economic activities in the Mekong Delta.
According to research results, most areas in the Mekong Delta subside from 0.5-3 cm/year; coastal areas commonly subside from 1.5-2.5 cm/year. Subsidence often occurs during the dry season, especially in years of prolonged drought.
Regarding the current situation of riverbank and coastal erosion, from 2016 to present, 812 landslides have appeared with a total length of over 1,191 km, of which, particularly dangerous landslides are 315 points/601 km (riverbank erosion 214 points/254 km, coastal erosion 101 points/347 km).
In the past 20 years, the Mekong Delta has only had moderate to small floods, lasting only 3-4 months compared to 5-6 months as before. However, flooding due to high tides and rain tends to increase.
In addition, in recent years, the Mekong Delta has experienced 3 severe droughts and saline intrusions, with 2 historically high periods in the dry seasons of 2015-2016 and 2019-2020.
Currently, the Mekong Delta region has not yet zoned the risks of subsidence, landslides, flooding, drought, and saltwater intrusion according to the provisions of the Law on Natural Disaster Prevention and Control; has been slow to delineate areas with restricted groundwater exploitation, especially areas with excessive exploitation, causing rapid subsidence; there is a lack of good operational coordination between irrigation systems in case of extreme weather causing saltwater intrusion deep into the fields...
Warnings about subsidence, landslides on river banks, coastlines, and flooding are still general. Forecasting drought and saltwater intrusion is only relatively accurate in major river mouths; there is a lack of comprehensive and synchronous solutions.
The handling of subsidence and landslides on river banks and seashores is basically still a "patch where it hurts" situation. The dyke and irrigation infrastructure is not yet complete and closed, many dykes and embankments are degraded, with the risk of incidents occurring during the rainy and flood season. Many degraded irrigation works and sea dykes cannot ensure control of water resources and saltwater intrusion. The urbanization rate is increasing rapidly, and irrigation and drainage infrastructure cannot keep up.
The number of specialized hydrometeorological monitoring stations and salinity monitoring stations in irrigation systems is still small and does not cover the entire system.
The Project on Prevention and Control of Landslides, Landslides, Floods, Droughts, and Saltwater Intrusion in the Mekong Delta Region identifies this as an important task of the entire political system; ensuring comprehensiveness and combining multiple objectives; taking proactive prevention as the main focus, focusing on risk management, "doing what you do", "no regrets"; protecting the environment between freshwater - brackish - salty ecological zones; increasing the participation of businesses, organizations, and individuals; applying advanced science and technology.
