The river is formed by the confluence of the Brerachan Water and the Allt Fearnach at Straloch, from the top of the strath. It flows past
Kindrogan House and Enochdhu, where it takes in the
Dirnanean Burn, and then through
Kirkmichael. It flows on past Ballintuim and
Bridge of Cally, half a mile south of which it joins the Black Water to form the River Ericht. The Ericht is a tributary of the
River Isla, which in turn flows into the
River Tay. The Ardle is bridged at Enochdhu,
Kirkmichael, Pitcarmick, Dalnabreck, Ballintuim, Blackcraig, Cally Lodge and by the
A93 at Bridge of Cally. ==Ardle's Grave==