Government sources report that more than 193,000 properties have been damaged, including 11,000 that were flooded. The storm also caused widespread damage to farmland, roads, and water and electricity infrastructure. Quang Binh and Ha Tinh provinces bore the brunt of the damage.
Central Vietnam is often in the path of tropical storms and depressions that form in the East Sea, which can intensify to form tropical cyclones known as typhoons (the Pacific equivalent of an Atlantic hurricane).
Unfortunately, the limited national disaster data in Vietnam does not allow an extensive analysis of risk. Our research in central Vietnam is working towards filling this gap and the development of more comprehensive flood mitigation measures.
Central Vietnam has a long and exposed coastline. It consists of 14 coastal provinces and five provinces in the Central Highlands. The Truong Son mountain range rises to the west and the plains that stretch to the coast are fragmented and narrow. River systems are dense, short and steep, with rapid flows.
These physical characteristics often combine with widespread human vulnerability, to deadly effect. We can see this in the impact of Typhoon Doksuri, but also to a lesser extent in the region’s annual floods.
Rapid population growth, industrial development and agricultural expansion have all increased flood risk, especially in Vietnam’s riverine and coastal areas. Socially marginalised people often have to live in the most flood-prone places, sometimes as a result of forced displacement.
This is not to say that Vietnam’s government did not mount a significant effect to prepare and respond to Typhoon Doksuri. But typically for Vietnam, where only the highest levels of government are trusted with important decisions, the response was bureaucratic and centralised.
This approach can overlook the input of qualified experts, and lead to decisions being taken without enough data about disaster risk.
Our research has generated a more detailed picture of disaster risk (focused on flood hazard) in the region. We have looked beyond historical loss statistics and collected data on hazards, exposure and vulnerability in Quang Nam province.
Our findings show that much more accurate, sensitive and targeted flood protection is possible. The challenge is to provide it on a much wider scale, particularly in poor regions of the world.
Reduce risk, and avoid creating new risk
An effective risk management approach can help to reduce the impacts of flooding in central Vietnam. Before a disaster ever materialises, we can work to reduce risk – and avoid activities that exacerbate it – for example land grabbing for development, displacing the poor, environmental degradation, discrimination against minorities.
It is critical that subject experts, particularly scientists, are involved in decisions about disaster risk – in Vietnam and around the world. There must be a shift to more proactive approaches, guided by deep knowledge both of the local context and of the latest scientific advances.
Our maps will help planners and politicians to recognise high-risk areas, prepare flood risk plans, and set priorities for both flood defences and responses to vulnerability. The maps are also valuable tools for communication.
But at the same time as emphasising data-driven decisions, we also need to advocate for a humanising approach in dealing with some of the most oppressed, marginalised, poor and disadvantaged members of the global community.