Monitoring Global Groundwater from Space

  • Released Monday, February 10, 2025
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Root Zone Soil Moisture from 2003 to 2021.

These maps combine data from the Gravity Recovery and Climate Experiment (GRACE) and GRACE Follow-On (GRACE-FO) with other satellite and ground-abased measurements to model the relative amount of water stored at three different depths: at the surface, at plant root level and underground. The wetness, or water content, of each layer is compared to the distribution between 1948 and 2014. The darkest red regions represent dry conditions that should occur only 2 percent of the time (about once every 50 years). All of the maps are experimental products developed by scientists at NASA’s Goddard Space Flight Center and the National Drought Mitigation Center. The maps do not attempt to represent human consumption of water; but rather, they show changes in water storage related to weather, climate, and seasonal patterns.

Global shallow groundwater from 2003 to 2021.

Surface Soil Moisture from 2003 to 2021.

Credits

This research was funded by NASA’s Terrestrial Hydrology, GRACE-FO Science Team, and Applied Sciences – Water Resources Programs

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This page was originally published on Monday, February 10, 2025.
This page was last updated on Wednesday, February 12, 2025 at 12:34 AM EST.

Missions

This page is related to the following missions: