Low water levels on the mid-Rhine spark concerns for shipping

Water levels on a portion of Germany's Rhine River have fallen to unusually low levels for this time of year, raising concerns that Europe's busiest inland waterway could face prolonged disruption during the peak summer shipping season.

At Kaub, in the UNESCO-listed Upper Middle Rhine Valley, the river has dropped to a historic 25 centimeters. 

The narrow stretch of river here is the Rhine's shallowest shipping bottleneck and one of the most closely watched points on the entire waterway. The gauge at Kaub determines how much cargo barges can safely carry between the North Sea ports and Germany's industrial heartland.

As water levels fall, vessels must reduce their loads to avoid running aground. The remaining cargo must be transferred to additional barges or transported by road or rail, increasing costs and slowing deliveries. 

The disruption is being felt across industries ranging from chemicals and fuel to steel, construction materials and manufacturing.

Freight costs on parts of the Rhine have more than doubled since late June, with some shipping companies introducing low-water surcharges that can reach as much as €1,000 ($1,150) per container, according to Fabian Göttlich from the Koblenz Chamber of Industry and Commerce (IHK).

"The Rhine is an absolute lifeline for the entire economy, and when traffic there stalls, everyone feels the impact," says Gottlich, who notes the challenge is that the alternatives are already under pressure.

"Take road freight, for instance: there is a shortage of drivers. And a similar situation applies to rail transport. The railway line on the right bank of the Rhine has been undergoing a major overhaul. It is completely closed until mid-December. This is bound to lead to further complications."

The effects are also being felt in Kaub itself. Mayor Bernd Vogt, who has lived in the town all his life, says he has never seen the river this low.

"Low water levels have been a real struggle for us in recent years, especially since we rely heavily on tourism here – all the river cruise ships and the like," says Vogt. "Right now, they can't operate. We're losing the day-trippers who usually take the Köln-Düsseldorfer or Bingen-Rüdesheimer boats upstream. That's bad for the local hospitality industry and for the town of Kaub itself."

Many of the sightseeing vessels that normally bring visitors to Kaub, the Loreley and neighboring towns have had to alter schedules, reduce passenger numbers or suspend services altogether because of the shallow river.

Florian Krekel from The Federal Waterways and Shipping Administration (WSA Rhein), responsible for maintaining safe navigation on the Rhine, says the Upper Middle Rhine has become a critical bottleneck for freight moving between North Sea ports, southwest Germany and Switzerland.

"Shipping traffic has dropped significantly due to these low water levels," says Krekel. "The flow of goods has to adapt and in a worst-case scenario, production does too."

From exposed riverbed on the Rhine, Krekel tells CGTN that authorities are closely monitoring conditions and adds that long-term plans are in place to deepen parts of this stretch of the Rhine by around 20 centimeters, although the project is not expected to be completed until 2033.

Low water is also affecting other major European rivers, including the Elbe and the Danube, highlighting the wider impact of prolonged heat and dry weather on inland waterways that support trade, energy and agriculture across the continent.

The Rhine reached a similar low of 25 centimeters during a record drought in 2018, but that occurred in late October after months of exceptionally dry weather. This year, those levels have arrived in July, weeks before the end of the traditional dry season.

That timing is what concerns many shipping companies and economists. An earlier start to the low-water season raises the prospect of a much longer period of disruption if significant rainfall fails to arrive. This will increase pressure on supply chains, push up transport costs and pose fresh challenges for Germany's export-driven economy.