Global urban subsidence up to 22 cm/yr threatens infrastructure, flood risk

A report highlights that major cities worldwide, including Mexico City, Isfahan, and Medan, are sinking at rates up to 22 centimeters per year due to subsidence. This ongoing phenomenon damages buildings, sanitation networks, and increases flood risk, particularly in coastal and riverine areas. The scale and acceleration of subsidence remain uncertain, but the trend poses a growing infrastructure and climate adaptation challenge.