It is an important tributary of the Mississippi River.

Near the west end of the lake it receives its first important tributary, the Lütschine.

Its most important tributary is the Kuvet River which joins it from the right side.

It is an important left tributary of the Sele.

It is an important tributary of the river Aar.

Along its course, the Krka receives a number of important tributaries.

The region gives rise to important tributaries to the Sanaga River.

There is not any important tributary in the lower part.

The largest stream, Jämtlandsälven, has numerous important tributaries throughout the province.

The most important tributaries are the Irbit, which joins at the city of the same name.