'Österdalälven' is a 300 km long
river in
Sweden that flows southeast through
Dalarna. Its sources are
Storån,
Grövlan and
Sörälven and the end point is
Djurås, in the
municipality of
Gagnef, where it connects with
Västerdalälven to form
Dalälven. Österdalälven flows through the
Trängslet dam and
Siljan.