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NASA warns Mexico City sinking accelerates; NISAR data show irreversible subsidence
Mexico City is experiencing rapid land subsidence due to groundwater extraction. NASA data via the NISAR satellite show subsidence accelerating and largely irreversible, with infrastructure impacts and landmarks affected, including the Angel of Independence and Benito Juárez Airport.
Why It Matters
The subsidence threatens infrastructure and long-term urban stability in a megacity built on soft lakebed sediments, underscoring groundwater management and planning needs.
Timeline
4 Events
NASA findings published: accelerated, largely irreversible subsidence
May 6, 2026
NASA researchers say land subsidence in the region is accelerating as aquifers beneath the city are depleted. The ground is compressing and collapsing due to decades of groundwater extraction. Once the ground compresses, the process is largely irreversible, making mitigation difficult even if water levels are restored. The issue is documented by NISAR imagery.
NISAR records subsidence during October 2025 dry season
October 2025
During Mexico City’s dry season (October 2025 to January 2026), NISAR satellite imagery recorded rapid ground movement with sections sinking at about 0.8 inches per month, or more than 9.5 inches annually in some areas; Benito Juárez International Airport is among the areas most affected.
First reports of subsidence date to the 1920s
1920
Historical records indicate the first reports of subsidence in Mexico City date back to the 1920s.
Angel of Independence monument altered due to sinking
1910
The Angel of Independence, built in 1910 to commemorate Mexico’s independence, has had 14 steps added to its base because the ground beneath has subsided.