Connecting Domestic Groundwater Resources to Global Food Security

A paper co-authored by Tara Troy was published in the Proceedings of the National Academy of the Sciences (PNAS)

Tara Troy PNAS

In a paper titled, "Virtual groundwater transfers from overexploited aquifers in the United States," Tara Troy, assistant professor of water resources engineering, seeks to track and quantify the food and embodied groundwater resources from three major domestic aquifer systems – the High Plains, Mississippi Embayment, and Central Valley aquifer systems – to their final destinations.

In doing so, she and her colleagues in research from the University of Illinois at Urbana–Champaign – including principal investigator Megan Konar, assistant professor of civil and environmental engineering – sought to determine the major US cities, US states, and countries that are currently most reliant upon these groundwater resources for food supply.

The paper was written about in TIME Magazine and the Los Angeles Times, among other outlets. You can also read it in its entirety at

And watch this video to hear more about Troy's research interests in her own words:

By John Gilpatrick



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