The Rhine Is Running Low Again. Maersk, Hapag-Lloyd, and CMA CGM Are Already Charging for It.

This newsletter covered Germany's early heatwave in May and its consequences for the power grid. The Rhine is now confirming what that story signalled: extreme heat does not stay in the energy sector. It migrates into logistics, and this week it arrived as a surcharge table from three of the world's largest container carriers simultaneously.

Low water levels in the current heatwave are preventing cargo vessels from sailing fully loaded on the Rhine river in Germany, increasing costs for freight transport. Shallow water means vessel operators are imposing surcharges on freight rates to compensate for vessels not sailing fully loaded. Low water is hampering shipping on all the river south of Duisburg and Cologne, including the chokepoint of Kaub. Vessels are often able to sail only 20% full, with loads having to be divided among several ships. 

Hapag-Lloyd, Maersk, and CMA CGM have all published Rhine low water surcharges that scale with gauge levels at Kaub, Cologne, Duisburg-Ruhrort, and Emmerich. The cost of tanker barge transport from Rotterdam to Karlsruhe has risen to around €60 to €70 a ton from around €45 at the end of June. At Kaub, the surcharge table published by Hapag-Lloyd runs from €40 per 20-foot container at moderate restriction to €775 at the most severe level currently active. Those numbers compound with base rates and do not cap themselves while the river stays low. 

Where the Rhine sits in the European logistics architecture

The Rhine is not a regional waterway. It is the primary freight artery connecting the North Sea ports of Rotterdam and Amsterdam to the chemical, steel, automotive, and agricultural heartland of western Germany, Switzerland, and beyond. The Rhine is crucial for transporting raw materials, fuel products, and manufactured goods. The heatwave and reduced rainfall this summer in western Europe caused a sharp fall in Rhine water levels, with cargo ships often only sailing about 20% full. 

The industrial exposure is already showing up in production decisions. Germany's Thyssenkrupp Steel told Reuters the worsening low water is now affecting the supply of raw materials to its Duisburg plant and it has slightly reduced blast furnace production because of the somewhat restricted supply of raw materials. The company's own barge operations have been suspended because of the low water levels and it is chartering vessels with a shallower draught.

That sentence is worth slowing down on. A major European steelmaker has reduced blast furnace production because a river is too shallow. That is the supply chain consequence of a heatwave translated into industrial output, not as a forecast but as a confirmed operational fact for this week.

The fuel distribution problem that sits downstream

German oil refineries mostly receive crude oil by pipeline but use the Rhine for high-volume distribution of refined products. For a Rhine closure, one analyst estimated about 3,000 additional road fuel tankers would be needed daily. Even if they could be found, extra transport costs could threaten increases in western German petrol station prices. 

That scenario is not yet active. The river is constrained, not closed. But the 2022 precedent is the relevant reference: that summer's Rhine low water event reduced German industrial output measurably and pushed heating oil and fuel prices up as road transport struggled to compensate for barge capacity that had effectively disappeared. The carriers issuing surcharges this week are publishing rates that extend to near-closure scenarios, which tells you the operational contingency planning is already running for conditions worse than the current level.

The compounding pressure on an already stressed corridor

This newsletter has covered multiple disruptions affecting the Rhine corridor in recent months: the inland cargo vessel collision at the Rhine bridge near Düsseldorf in March, the Germany rail breakdown in June that pushed additional freight toward inland waterways, and the May heatwave that flagged exactly this risk. The corridor that is supposed to be the reliable, lower-cost alternative to road freight is absorbing multiple simultaneous pressure events, and the available slack to absorb further disruption is not growing.

Low water levels on Germany's Rhine river are raising cargo transport costs and disrupting logistics, adding pressure to Germany's fragile economic recovery. Germany's chemical industry is better prepared today for heatwaves and low water levels than it was during the drought in 2018, said Wolfgang Grosse Entrup, CEO of the German chemical industry association VCI. "For now, the effects remain manageable, partly because production is running at a low level," he said. 

That last clause is the one to hold. The effects are manageable in part because production itself is already running below capacity. A logistics system under less pressure is absorbing a constrained river more easily than it otherwise would. That is not a resilience story. It is a description of an industrial economy that has lost demand before the infrastructure lost capacity.

The exposure for European and Asian companies

Dry weather and a continued heatwave in river catchment areas mean improvement is not immediately in sight. But rain is forecast from Friday. The short-term outlook has a resolution in view. The medium-term picture is the more relevant planning variable: Rhine low water events are becoming a recurring seasonal feature, and the surcharge tables now published by the world's major container carriers are not emergency documents. They are operational tools built for a recurring condition. 

For any company moving bulk commodities, refined fuels, chemicals, or containerised goods through the Rhine corridor, the carrier surcharge tables published this week are the rate environment to plan around. The disruption does not arrive as a closure. It arrives as a vessel that sails 20% full, a surcharge that doubles as the gauge drops another 20 centimetres, and a production schedule that adjusts before the river fully recovers.