NASA’s NISAR satellite reveals that Mexico City is sinking at an alarming rate. Some areas are subsiding nearly 10 inches a year due to excessive groundwater extraction.
Key statistics:
- Subsidence rates exceed 0.5 inches per month, with some areas sinking around 0.8 inches monthly.
- The ancient aquifer beneath the city supplies about 60% of drinking water for its 22 million residents.
- Parts of the city, especially near Benito Juarez International Airport, are among the worst affected.
The city has faced chronic water crises due to over-extraction of groundwater. This situation has led to significant infrastructure damage, including fractured roads and tilted buildings. The soil in Mexico City is primarily clay-rich, which exacerbates the issue as it compacts when water is removed.
Mexico City’s subsidence was first documented in the 1920s. Urban development has intensified the problem. David Bekaert, a researcher involved with NISAR, noted that Mexico City is a well-known hot spot for subsidence.
The Angel of Independence monument illustrates the effects of subsidence. It has required 14 additional steps at its base due to sinking ground. Experts warn that once the ground compresses, it cannot regain its original elevation even if water levels are restored.
Officials have not confirmed how this will affect future urban planning or infrastructure projects. The relentless demand for water continues to challenge city officials as they seek solutions to this ongoing crisis.
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