Ill (Austria)

For the river Ill in France see Ill (France).

Ill
The Ill near Feldkirch-Gisingen.
Origin	46°52′9″N 10°6′32″E
Mouth	47°17′57″N 9°33′31″E
Progression	Rhine → North Sea
Length	72 km
Source elevation	2240 m
Mouth elevation	1811 m
River system	Rhine

The Ill (all capitals: ILL) is a 72 km long tributary of the Rhine river in the western Austrian province of Vorarlberg.

It flows from the northern slopes of the Silvretta mountain range and then runs north-west through Vorarlberg. The Ill passes through the Montafon and Walgau valleys and the town Feldkirch. It joins the river Rhine a few kilometers northwest of Feldkirch ("Illspitz"), at the border with Switzerland. The Ill has several dams with hydroelectric power stations.