How deep is the Danube River?

The depth of the Danube River ranges from 3 to 26 feet. It is the second longest European river at a length of 1,785 miles. It travels from western Germany to the Black Sea along nine countries: Germany, Austria, Slovakia, Hungary, Croatia, Serbia, Bulgaria, Romania and Ukraine.

The depth of this river permits river cruise ships to traverse it. It is one of the most popular river destinations because it flows through four national capitals, more than any other river in the world. In 1998, because of the increasing water traffic, the International Commission for the Protection of the Danube River was established with a goal to protect the animal life and water of the Danube.