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Mexico City subsidence. Groundwater-related subsidence often results in major damage to urban areas. In Mexico City, the buildings interact with the settlement, and cause cracking, tilting, and other major damage. [7] In many places, large sinkholes open up, as well as surface cavities.
Land subsidence caused by groundwater depletion is also a major concern, with the ground having sunk as much as 2.4 feet in some areas since 2015, Stork said. ... orchard and a rental home near ...
Mexico City is an example of a sinking city that is neither coastal nor low-lying. The city was originally constructed by the Aztecs above a large aquifer in the 1300s. Subsidence was originally caused by the loading of large Aztec and Spanish structures. The city grew rapidly during the nineteenth century, and with it, so did the demand for water.
With California introducing the Sustainable Groundwater Management Act in 2014, new estimations of subsidence based on water usage plans have revealed that stretches of the California Aqueduct are still at a substantially high risk of subsidence. These projections range from 10-15 feet of subsidence in the most at risk areas. [16]
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Subsidence frequently causes major problems in karst terrains, where dissolution of limestone by fluid flow in the subsurface creates voids (i.e., caves).If the roof of a void becomes too weak, it can collapse and the overlying rock and earth will fall into the space, causing subsidence at the surface.
As Southern California recovers from last month’s devastating wildfires, heavy rain resulted in pockets of flooding, blocked roadways and mud piling up around recent burn scars.