Mexico City is experiencing significant ground subsidence at rates approaching 10 inches per year, according to satellite imagery released this week by NASA. The capital, home to approximately 22 million people across 3,000 square miles, ranks among the world’s fastest-sinking urban areas. Scientists studying the phenomenon note that some areas experience subsidence at rates of 0.78 inches per month, particularly near the main airport and the Angel of Independence monument.
The city’s geographic position contributes substantially to the problem. Mexico City was constructed atop an ancient lake bed, and extensive groundwater pumping combined with urban development have dramatically reduced the underlying aquifer. Over the course of less than a century, the ground has dropped more than 39 feet in total. Historical landmarks including the Metropolitan Cathedral, where construction began in 1573, now visibly tilt to one side as a result of the uneven subsidence.
The consequences extend beyond architectural concerns. Enrique Cabral, a researcher at the National Autonomous University of Mexico studying geophysics, emphasizes that subsidence damages critical city infrastructure including the subway system, drainage networks, potable water systems, housing, and streets. The contracting aquifer has also contributed to chronic water shortages that are expected to intensify.
NASA’s measurements were obtained through NISAR, a satellite jointly operated by NASA and the Indian Space Research Organization, which tracked surface changes between October 2025 and January 2026. The satellite’s capability to detect real-time variations offers researchers unprecedented detail for studying the subsidence problem. Scientists indicate that future measurements may eventually provide building-by-building level data. For decades, Mexican government response focused primarily on stabilizing foundations beneath monuments, but recent water supply emergencies have prompted increased research funding. Researchers view the satellite data as essential for developing long-term mitigation strategies for the city’s subsidence crisis.
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