The River Isla (Scottish Gaelic: Uisge Ìl)[1] is a tributary of the River Tay in Angus and Perthshire, Scotland.
It rises in the Grampians before flowing down through Glen Isla into the Valley of Strathmore.
After a course of 46 miles (74 km), it falls into the Tay near Meikleour.
Its tributaries include the Ericht.
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