Overview
- Lake Constance (Bodensee) hit historic summer lows in late August 2026 with measured levels about 84 centimeters below normal and analysts saying the lowest summer readings in roughly 210 years.
- Bavarian monitoring shows 86% of near-surface groundwater sites and 79% of deeper sites at low levels with many recording new minima, though authorities say overall drinking-water systems remain broadly secure.
- Rivers in Lower Saxony are falling to critical stages, with the Weser gauge near Intschede around ten centimeters and small streams such as the Krelinger Bach already dry, forcing concerns for inland shipping and industry.
- Receding waters on the Rhine have exposed hunger stones, shipwrecks and possible Roman wooden piles under study while also surfacing World War II munitions and recent debris that police and specialist teams are removing.
- Officials warn little short-term relief is expected and urge water saving as experts link the multi-year deficits to deficient winter recharge, low Alpine snowmelt and higher evaporation, prompting calls for storage and adaptation measures.