The river rises above Dent Head Farm (on the Dales Way), formed from several smaller streams emanating from Blea Moor Moss, the River Dee makes its way northward past Stone House, where it is joined by Arten Gill, to Cowgill, where it turns left into Dentdale. In Dentdale, it picks up the waters of Deepdale Beck (travelling north from Whernside) before passing Dent and Gawthrop.