the river becomes the spen at the confluence of hunsworth beck and nann hall beck in cleckheaton. it flows south past local industrial premises parallel to a dismantled railway line before turning south east on the outskirts of liversedge. it continues flowing in this direction through the heart of the industrial centre of the town before returning southwards along the edge of heckmondwike. on the outskirts of the village of ravensthorpe it turns south east again before joining the river calder.