Swiss glaciers lose over 5% of ice in 2026, deepening water-security concerns

Switzerland’s glacier monitoring program GLAMOS reported that glaciers lost 5.5% of their ice in 2026, marking another year of accelerated decline. Matthias Huss, who oversees the network, noted that the melt left many valleys looking like a barren, moon-like terrain, with only scattered ice blocks remaining. The loss follows a peak 6% reduction in 2022 and is part of a global pattern tied to rising temperatures.

The shrinkage of key ice fields such as the Rhône and Aletsch threatens Europe’s “water towers,” which regulate spring and summer river flows into the Rhine and Danube. This summer’s low water levels halted freight traffic on those rivers and temporarily shut down river-cooled nuclear power stations. Scientists warn that continued melt could exacerbate drought risks for agriculture and increase landslide and flood hazards as permafrost destabilises mountain slopes.