For centuries, the Dutch have reclaimed land from the sea using polders (enclosed tracts of drained land) and a complex network of dikes, canals, and pumping stations. The country’s lowest point, the Zuidplaspolder, sits about 6.76 meters below sea level.

Today, roughly 9 million people, more than half the population, live in areas that would flood without active water management.

The entire system is maintained by the “Delta Works,” a world-renowned flood defence network built after the devastating 1953 North Sea Flood that killed more than 1,800 people.

According to the Royal Netherlands Meteorological Institute ( KNMI ), sea levels along the Dutch coast are rising about 3 to 4 millimetres per year, roughly double the global average.

Land subsidence adds to the threat as parts of the west are sinking as peat soils dry and compact. The government ’s Delta Programme 2025 warns that even a 1-meter sea-level rise could overwhelm existing defences by 2100, forcing massive infrastructure upgrades and potentially displacing thousands of residents.

Utrecht University researchers caution that a rise of 2 to 5 metres, which could occur in worst-case global warming scenarios, would make large parts of the Netherlands “unlivable” without dramatic adaptation.

The Netherlands’ situation is not isolated. From Venice to Bangladesh, low-lying regions face similar risks from sea-level rise and coastal flooding. Yet few countries have done as much as the Dutch to prepare.

Still, climate activists warn that even Dutch innovation has limits. Last week, artists installed red figures in Amsterdam’s canals to protest inaction on the climate crisis ahead of COP30 in Brazil, noting that “one-third of the Netherlands already lies below sea level.”