Ill (Vorarlberg)

Ill
The Ill near Feldkirch-Gisingen.
Basin
River system	Rhine
Progression	Rhine → North Sea
Main source	46°52′9″N 10°6′32″E / 46.86917°N 10.10889°E / 46.86917; 10.10889 (Ill source)
Source elevation	2,240 m (7,350 ft)
River mouth	47°17′57″N 9°33′31″E / 47.29917°N 9.55861°E / 47.29917; 9.55861 (Ill mouth)
Mouth elevation	1,811 m (5,942 ft)
Countries	Austria
Location	Vorarlberg, Austria
Length	72 km (45 mi)

The Ill (all capitals: ILL) is a 72 km long tributary of the Rhine 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.

Tributaries of the Rhine

Left (western)	Vorderrhein Aua Russein Schmuèr Alpine Rhine Vorderrhein Tamina Rietaach Alter Rhein Freibach Lake Constance Goldach High Rhine Thur Töss Glatt Aare Sissle Ergolz Birs Birsig Upper Rhine Ill Moder Sauer Lauter Spiegelbach Queich Speyerbach Rehbach Isenach Eckbach Eisbach Pfrimm Selz Middle Rhine Nahe Moselle Nette Brohlbach Ahr Lower Rhine Erft

Right (eastern)	Vorderrhein Rein da Tuma Rein da Curnera Rein da Medel Rein da Sumvitg Glogn Rabiusa Hinterrhein Ragn da Ferrera Albula/Alvra Alpine Rhine Hinterrhein Plessur Landquart Mülbach Ill Frutz Lake Constance Dornbirner Ach Bregenzer Ach Leiblach Schussen Rotach Brunnisaach Lipbach Seefelder Aach Stockacher Aach Radolfzeller Aach High Rhine Biber Wutach Alb Murg Wehra Upper Rhine Wiese Elz Kinzig Rench Acher Murg Alb Pfinz Saalbach Kraichbach Leimbach Neckar Weschnitz Modau Main Middle Rhine Wisper Lahn Wied Lower Rhine Sieg Wupper Düssel Ruhr Emscher Lippe IJssel Oude IJssel/Issel Berkel Schipbeek

Coordinates: 47°01′04″N 10°00′46″E / 47.01778°N 10.01278°E / 47.01778; 10.01278

Authority control	GND: 7750958-4

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