Austria’s groundwater may fall 25% by 2050

Groundwater levels in Austria are projected to drop by as much as 25% by 2050, according to a study published Monday, with eastern and southeastern parts of the country expected to experience the most significant decreases.

Drivers of the decline

Researchers from the Vienna University of Technology, the University of Natural Resources and Life Sciences, and the Central Institute for Meteorology and Geodynamics found that rising temperatures, increased evaporation, and shifting rainfall patterns are accelerating the depletion. Longer dry spells in summer are reducing the amount of water that percolates into deeper soil layers. While winter precipitation is increasing, more of it now falls as rain rather than snow, weakening natural groundwater recharge in several regions.

Ecosystems and agriculture at risk

The study warns that wetlands, including riparian forests, could dry out, endangering plant and animal species that rely on those habitats. Groundwater levels have already shown slight declines in some areas over recent decades, raising concerns for agriculture and future drinking water security. The research provides detailed regional projections for Austria for the first time, intended to guide adaptation strategies in water management, farming, and urban planning.

Economic stakes and global policy links

The authors emphasized that the severity of future declines will depend heavily on global emissions trends and climate policy decisions. A 2021 study by the Austrian Institute of Economic Research (Wifo) and the Agency for Health and Food Safety (Ages) estimated that under certain climate scenarios, Austria could lose up to €600 million ($676 million) in annual economic output, with as many as 9,300 jobs at risk.