The narrow channel leads into a former basin where the canal made a right angle turn. There was once a stop lock where the embankment is to the left of the photo. This raised the canal through 15cm (6 inches), before descending through four more locks to meet the River Irwell. The stop lock prevented the Manchester & Salford Junction Canal taking previous water from the Rochdale Canal. Pumping from the River Irwell was required to supply the water for the summit pound above the stop lock.