German glaciers lose over a quarter of surface area in two years as river levels fall

Shrinking Alpine ice

Germany recorded severe consequences of climate change during the summer of 2026, marked by heat records, fires, and low river flows. The most visible transformations are unfolding in the Bavarian Alps across the country's four remaining glaciers: the Watzmanngletscher, Höllentalferner, Nördlicher Schneeferner, and Blaueisgletscher. A joint survey conducted by geographer Wilfried Hagg of the Munich University of Applied Sciences and glaciologist Christoph Mayer of the Bavarian Academy of Sciences and Humanities found that these four glaciers lost more than a quarter of their surface area between 2023 and 2025 alone. The Watzmanngletscher in the Berchtesgaden mountains is expected to lose its glacier status soon, while the Höllentalferner in the Zugspitze area is projected to endure the longest. Both formations have been tracked annually in late summer since 2021 through repeat photography by the Deutsche Presse-Agentur.

Climate researcher Anders Levermann from the Potsdam Institute for Climate Impact Research evaluated the broader trajectory of mountain ice reserves.

Under global warming there is indeed more precipitation and this can also fall as snow at high latitudes, but the warming itself and the associated melting of mountain glaciers far outweighs it. And that is why 97 percent of mountain glaciers worldwide and also those in Germany are losing mass. The German glaciers can therefore no longer be saved.

Disruption of river systems

The decline of Alpine glaciers extends beyond recreational winter sports, directly affecting freshwater security across regional river basins. Mountain glaciers act as natural freshwater reservoirs by accumulating snow mass during winter months and discharging meltwater during dry summer periods. This seasonal exchange provides a regulatory buffer for downstream lakes and waterways during prolonged dry spells. The progressive disappearance of this reservoir effect coincided with record-low water levels observed across waterways, including the Rhine and the Danube, during the summer of 2026.

Levermann explained the consequence of losing this seasonal buffer mechanism for river levels and water supply.

When that is in balance, it means a kind of buffer during a period when you potentially have a drought and therefore less water in rivers and lakes. And they are simply losing this balancing effect.

Systemic fluctuations and extremes

Documenting these ecological shifts reveals that climate change does not produce an uninterrupted, uniform rise in temperatures at every location each season. Natural variations remain present within the climate system, meaning year-on-year repeat photography can capture fluctuating conditions rather than simple linear declines. However, global warming amplifies the amplitude of these swings in all directions. Levermann pointed out that the coexistence of localized droughts alongside heavy precipitation events is not contradictory, as such extremes occur across different areas or at separate times within the same region.

He addressed the non-linear character of temperature variations across different years and observation points.

Global warming does not mean that it gets warmer in every place at every time every year, but rather we have natural fluctuations in the system.

The photographic documentation by dpa continues to record these physical changes from fixed viewpoints each August, capturing the ongoing reduction of ice and shifting water baselines.