
TheRiver Ardle (Scottish Gaelic:Abhainn Àrdail) is a tributary of theRiver Ericht. It runs for 10 miles (16 km) throughStrathardle inPerthshire, Scotland.[1] It is asalmon andtrout river.
The river is formed by the confluence of the Brerachan Water and the Allt Fearnach at Straloch, 3 miles (4.8 km) from the top of the strath. It flows pastKindrogan House and Enochdhu, where it takes in theDirnanean Burn, and then throughKirkmichael. It flows on past Ballintuim andBridge of Cally, half a mile south of which it joins the Black Water to form the River Ericht. The Ericht is a tributary of theRiver Isla, which in turn flows into theRiver Tay.
The Ardle is bridged at Enochdhu,Kirkmichael, Pitcarmick, Dalnabreck, Ballintuim, Blackcraig, Cally Lodge and by theA93 at Bridge of Cally.

The name Ardle is derived from aPictish warrior who was killed in battle fighting the Danes at Enochdhu in 903 AD. He was reputed to be a giant, and the mound of his supposed grave is located in the garden ofDirnanean Lodge in Enochdhu. It is 19 feet (5.8 m) long, and around 3 feet (0.91 m) wide. At its end is a 5-foot (1.5 m) high monolith. The origin of this stone is unknown but it is thought unlikely to be prehistoric.[2]