It flows through Treverward, Purlogue, New Invention, Chapel Lawn and Bucknell, briefly forming part of the county border, before passing and Coxall and discharging into the River Clun at Jay. The very last part of the river, through Adley Moor, is in Herefordshire.
- Ordnance Survey mapping
- Maps: John Speed 1611; Drayton 1629
- Map: Robert Morden 1695
- Location map: 52°22’55"N, 3°-0’43"W