Critically low water levels on the Rhine are forcing cargo ships to reduce capacity, threatening to disrupt German industrial supply chains and economic growth.
Key facts
- •The Rhine water level at Kaub was recorded at approximately 16 centimeters on Monday.
- •Shipping carriers have reduced cargo loads to as little as one-fifth of normal capacity.
- •The Kiel Institute for the World Economy previously calculated that a 30-day period of low water on the Rhine leads to a 1% decline in industrial production.
- •Germany transported 173 million tons of goods via inland water in 2024.
- •The Rhine corridor accounts for roughly 40% of freight by ton-kilometers between Rotterdam and the German-Swiss border.
Water levels on the Rhine River have dropped to critical lows due to weeks of drought, with the gauge at Kaub measuring approximately 16 centimeters on Monday. This depth is well below the 40-centimeter threshold typically required for standard commercial vessels. As a result, shipping operators have significantly reduced cargo loads, with some vessels carrying only one-fifth of their normal capacity.
By the numbers
Economic Impact and Supply Chain Risks
The German Economic Institute (IW) projects a 0.4% decline in gross domestic product due to the disruption, potentially erasing the 0.5% growth expected for the year. Experts estimate losses between €1 billion and €2 billion in the third quarter alone, with the steel, chemical, and energy sectors facing the most significant challenges. Inland waterways currently transport approximately 5% of German goods, including coal, iron ore, and petroleum products. Jens Schwanen of the BDB association of inland shipping warned that the river could become impassable at Kaub by the end of the week. If the river is effectively split in two, shipping companies would be forced to shift cargo to trucks and rail. However, officials noted that road networks cannot absorb the volume of a single large barge, which typically carries the equivalent of 50 to 150 truckloads, without causing severe congestion and increased costs.
Government Response and Climate Factors
In response to the supply chain strain, Transport Minister Steffen Bilger announced measures including the reduction of red tape for heavy road loads, the suspension of unnecessary roadworks, and improved coordination with rail freight services. Additionally, Baden-Württemberg and four other German states are easing restrictions on Sunday truck movements. Scientists attribute the increasing frequency of these low-water events to climate change, noting that the current crisis is the third major episode in eight years. The reduction of Alpine snowmelt and glacier retreat has weakened the river's traditional natural buffer during dry summer months. According to the EU’s Copernicus Climate Change Service, western Europe recently experienced its warmest June and July on record.
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This article was independently rewritten by ManyPress editorial AI from reporting originally published by Deutsche Welle Business.
