The River Lath rises near Monyash [Map] flowing through Lathkill Dale [Map], where there are a number of seasonal springs, to Conksbury Bridge, Derbyshire [Map] then Alport [Map] where it is joined by the River Bradford. After Alport [Map] the River Lath flows east to a point around 600m south of Haddon Hall [Map] where it joins the Derbyshire River Wye.

The River Bradford rises at Middleton-by-Youlgreave [Map] from where it flows to Alport [Map] where it joins the River Lath.

Lathkill Dale [Map], in which the River Lath flows, extends from Monyash [Map] to Alport [Map] where the River Lath is joined by the River Bradford.