Californians have seen a concerning photo: a person standing next to a telephone pole with signs labeled with years, showing the ground level at different times.
The signs on the pole read: "1962" at the top, "1970" several feet lower, and further down, "2015", followed by signs for "2019", "2021", and finally "2025" at the bottom.
Each sign represents the ground level for that year, illustrating the severe impact of subsidence on the valley due to excessive water pumping without replenishment.
The iconic photo shows how much the ground has sunk over the years.
This image highlights the urgent issue of land subsidence and its connection to groundwater depletion.
Author's summary: Land subsidence threatens California's valley.