 It runs south westerly through Cocker Clough Wood and Brunstow Wood, then by Hampson Green, before briefly turning north west when joined by Potters Brook at the hamlet of Potters Brook close to the M6 motorway , where it is channeled under the Lancaster Canal.The river then skirts south around Cockerham, by Little Crimbles before being swollen by Park Lane Brook and Lee Brook and flowing into saltflats below Cockersand Abbey on the Lune estuary.The river is, approximately 17.5 km (10.9 miles) in length.