The Fecht is a river in the Haut-Rhin department, northeastern France. Its source is located between the Lauchenkopf and the Breitfirst [fr]. It rises in the Vosges Mountains near Metzeral and joins the river Ill (a tributary of the Rhine) at Illhaeusern, north of Colmar, after a course of 49 kilometres (30 mi).^[1] It flows through Munster and Turckheim. Its longest tributaries are the Weiss and the Strengbach.^[1]

Fecht
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Location
Country	France
Physical characteristics
Source	Vosges Mountains
Mouth	Ill
• location	Illhaeusern
• coordinates	48°10′58″N 7°25′49″E / 48.1828°N 7.4303°E / 48.1828; 7.4303
Length	49 km (30 mi)
Basin features
Progression	Ill→ Rhine→ North Sea
Tributaries
• left	Weiss, Strengbach