Mexico City Sinking at Alarming Rate Revealed by NISAR Satellite Data
Satellite data from the NISAR mission reveals that Mexico City is sinking at an alarming rate of 50 centimeters per year, driven by over-pumping of underground aquifers.
Recent satellite data from the NISAR mission, collected between October 2025 and January 2026, has revealed in unprecedented detail how Mexico City is sinking into the earth. The satellite images demonstrate an extreme rate of subsidence, posing a severe warning for the metropolis's future infrastructure.
Alarming Subsidence Rates and Historical Context
According to advanced radar measurements from space agencies, Mexico City is sinking at an average rate of about 50 centimeters per year. The new radar maps highlighted areas where the ground drops by more than two centimeters every month, with the city's central international airport suffering particularly severe damage. Since systematic monitoring began in 1925, parts of the city have already sunk by more than 12 meters, and scientists warn that the city could eventually drop by up to 30 meters more.
"The ongoing depletion of underground water reservoirs has led to the gradual compaction and collapse of the soft soil under the city's immense weight."
Geological Causes and Infrastructure Impacts
The primary cause of this silent collapse lies in the region's geography and over-pumping. Mexico City was originally built on the clay bed of an ancient lake. With rapid urbanization and a dramatic rise in water demand, authorities began pumping massive amounts of water from underground aquifers. The consequences are visible across the metropolis: deep cracks tear through buildings, sewage pipes break, and historical foundations require stabilization, such as the Angel of Independence monument whose base had to be raised by 14 steps.
Advanced Satellite Monitoring Solutions
While the phenomenon has been known for decades, authorities previously struggled to obtain real-time, precise data on underground water loss. The new satellite cooperation between the United States and India via the NISAR mission provides a high-resolution radar monitoring tool capable of tracking millimeter-level ground movements from space. Scientists hope these insights will enable policymakers to make data-driven decisions on water management and curb over-pumping.
