[1] The mouth of the river empties into Puget Sound from the Olympic Peninsula in Clallam County.

[2] The river has an additional 36.7 miles (59.1 km) of tributaries connected to it.

The nearest town is the census-designated place (CDP) of Sekiu approximately 4.75 miles (7.6 km) east from the mouth of the Sekiu river.

[3] The mouth of the Sekiu river is used to define the western border of North Puget Sound.

This article related to a river in the state of Washington is a stub.