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23h ago

Study Confirms All Major U.S. Cities Are Sinking Due to Groundwater Extraction

New research highlights subsidence rates of 2–10 mm annually across 28 cities, raising concerns over infrastructure damage and flood risks.

Stock image of Houston.
A view of Chicago’s skyline at sunset from the 94th floor of the John Hancock Observatory.Juli 2013
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Overview

  • A May 8 study published in Nature Cities reveals that all 28 most populous U.S. cities are experiencing land subsidence, with 25 cities seeing over 65% of their land sinking.
  • Groundwater extraction is identified as the primary driver, accounting for approximately 80% of the subsidence, compounded by urban growth, geological factors, and building weight.
  • Houston leads with the fastest sinking rates, with 40% of the city subsiding at over 5 mm annually, while Chicago and San Francisco also face significant localized sinking risks.
  • Researchers warn that even small annual sinking rates can cumulatively undermine infrastructure, increasing the likelihood of structural damage and coastal flooding.
  • Experts recommend enhanced satellite monitoring, improved water management, and updated building codes to mitigate long-term risks to urban infrastructure.