How do North Sea tides affect Bremen?

North Sea tides significantly influence the geography and infrastructure of Bremen. Because the Weser River is canalized downriver, these tides—which have a range of approximately 11.5 feet (3.5 meters)—are able to penetrate inland as far as the Bremen Dam.1

To manage the impact of these tides and the region's naturally high subterranean water level, the city relies on an extensive flood-protection network. This system includes 71 miles (114 km) of dikes integrated with a complex drainage infrastructure, which are essential for maintaining the safety and stability of the Bremen urban area.2