Persistent dry conditions have led to significantly reduced water levels on the Danube in Bavaria, severely impacting both passenger and cargo shipping operations. The ongoing drought has resulted in several sections of the river becoming impassable for larger vessels, particularly between Straubing and Vilshofen, a stretch that is not equipped with water regulation infrastructure.

Passenger Services Disrupted

Tourist and excursion boats operating along the Danube have faced notable restrictions. Since early July, vessels have been unable to traverse the renowned Donaudurchbruch near Kelheim, a popular site for both domestic and international visitors. The minimum water depth required for safe passage through the Weltenburger Enge is 2.3 meters; recent measurements show water levels falling short by approximately 50 centimeters. This shortfall has forced several boats to remain docked, resulting in temporary layoffs for some staff within the region's main shipping companies. Operators are monitoring water levels closely and expect limited reopening as conditions permit.

Freight Shipping Severely Reduced

The cargo shipping sector is also facing substantial constraints. Ships that typically carry up to 2,000 tons of goods are currently limited to loads as low as 300 to 500 tons, according to the Waterways and Shipping Authority for the Danube region. This reduction is a direct result of insufficient water depth, which restricts vessel draught and overall carrying capacity. Unshipped cargo is being stored temporarily at ports such as Regensburg and Passau, where state-owned harbor operators have expanded storage and transshipment facilities to accommodate the backlog.

The bottleneck is particularly acute on the 69-kilometer stretch of the Danube between Straubing and Vilshofen, which lacks the water-level regulation provided by locks and dams found on other parts of the river and connecting waterways like the Main-Danube Canal. Operators must constantly adjust to fluctuating depth readings, further complicating logistics and scheduling.

Wider Impact Across the Region

The low water situation is not confined to the Danube. The Rhine, another major waterway for inland shipping, is also experiencing historically low water levels. This has reduced the amount of cargo ships can transport to and from North Sea ports, further compounding supply chain challenges in southern Germany. Shipping companies are responding by altering loading practices, routes, and schedules to maintain the movement of agricultural products, construction materials, steel, and other essential goods as efficiently as possible.

Industry representatives emphasize the environmental benefits of inland shipping, noting that it produces fewer emissions per ton of transported goods compared to road haulage and helps reduce traffic congestion on major roads.

Exceptional Hydrological Situation

Data from regional monitoring stations illustrate the severity of the current drought. At the Pfelling gauge in the Straubing-Bogen district, the mean water level on July 15 was recorded at 222 centimeters, a notable drop from the previous year's minimum average of 242 centimeters during the same period. In Passau, water levels fell below 400 centimeters on several days in July, a threshold not breached at any point during the first half of July the previous year. The Bavarian State Office for the Environment has reported exceptionally low water levels for the Danube, warning that the situation could persist if rainfall does not increase.

Fluctuating river levels are influenced by regional precipitation and melting snow, but the ongoing lack of rainfall has made the impact on shipping particularly acute this season. Authorities continue to monitor the situation and advise shipping companies and port operators to remain vigilant as the drought persists.