Major inland waterways
(rivers and canals):

Rhein (Rhine, 695 km)
Elbe (607 km)
Main (387 km)
Weser (346 km)
Donau (Danube, 203 km)
Mittellandkanal (Midland Canal, 321 km)
Main-Donau-Kanal (Main-Danube Canal, 171 km)
Dortmund-Ems-Kanal (Dortmund-Ems Canal, 224 km)