Siuslaw is a Yakonan language once spoken in southern Oregon. It was related to Alsea
and Coos, and some linguists consider all these languages part of a broader
Penutian language family.
Unfortunately the last fluent Siuslaw speakers died in
the 1970's and 80's, but the language has been recorded and some young people are working to revive their ancestral language.
Siuslaw is often referred to as "Lower Umpqua" by anthropologists, because the traditional homeland of the Siuslaw includes the lower part of the
Umpqua River. The term "lower" does not have anything to do with the language, which is completely unrelated to the
Athabascan language of the
Upper Umpqua.