Suhre

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Suhre
Suhre between Suhr and Oberentfelden
Location
Country	Switzerland
Physical characteristics
Source	Sempachersee
• coordinates	47°09′45″N 8°07′19″E / 47.16250°N 8.12194°E / 47.16250; 8.12194
Mouth	Aare
• coordinates	47°24′21″N 8°03′58″E / 47.4057°N 8.0660°E / 47.4057; 8.0660
Basin features
Progression	Aare→ Rhine→ North Sea

The river Suhre is a 34 kilometer long tributary of the river Aare in the Swiss cantons of Lucerne and Aargau. The river rises in Sempachersee (or Lake Sempach) at an elevation of 504 meters above sea level, and joins the Aare east of the town Aarau at an elevation of 362 meters. The most important side valley is the Ruedertal, which joins the Suhretal (or Suhre Valley) at Schöftland.

In the medieval age, the river had several names: Suron (1036), Suranum flumen (1210), Sure (1241). Today, the name is written without "h" in the canton of Lucerne, and with "h" in the canton of Aargau. The most important tributaries are the Ruederchen joining at Schöftland, the Ürke joining at Unterentfelden and the Wyna joining at Suhr.