News release: Study shows groundwater gains in Arizona yet climate risks still threaten water supply
A combination of water management practices has contributed to notable groundwater gains in Central Arizona despite the region dealing with long-term water stress, according to a study led by researchers at The University of Texas at Austin and collaborators in Arizona and Colorado. … Some of the state’s policies incentivize farmers to use surface water from the river rather than tap into groundwater. Other policies channel the river water directly to aquifer recharge zones, where it can seep down to the groundwater. According to the study, which was published in Communications Earth & Environment, these policies have helped bank a total of 10.5 cubic kilometers of groundwater water from 1989–2019 in the Phoenix, Tucson and Pinal active management areas, where these policies are in place.
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