What is the length of the blue nile river?

Question

What is the length of the blue nile river?

Answer 1

The distance from its source to its confluence is variously reported as 1460 and 1600 km (907 and 1000 mi).

Answer 2

The distance from its source to its confluence is variously reported as 1460 and 1600 km (907 and 1000 mi). The uncertainty over its length might partially result from the fact that it flows through virtually impenetrable gorges cut in the Ethiopian highlands to a depth of some 1500 m (4950 ft)—a depth comparable to that of the Grand Canyon in the United States.

(info taken from wikipedia)