Arizona’s Declining Groundwater - related image preview

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Arizona’s Declining Groundwater

Decades of satellite observations show that the aquifers in the southern part of the state are ailing.


NASA Earth Observatory images by Wanmei Liang, using data from Abdelmohsen, K., et al. (2025), boundary data from Colorado River Basin GIS Open Data Portal, and Landsat data from the U.S. Geological Survey. Oceanic Niño Index chart based on data from the Climate Prediction Center at NOAA. Story by Adam Voiland.

Published July 21, 2025
Data acquired 2002 - 2024

Sources:
GRACE
In situ Measurement
Landsat 8 > OLI
Model