Complex sentence: At the hamlet of Bishopbridge the river changes character, becoming an artificial drainage channel that runs in parallel with the Ancholme, as it flows north the river also loses its identity becoming the East drain, when it is joined by the Kingerby Beck.
Split into simpler sentences: At the hamlet of Bishopbridge the river changes character, becoming an artificial drainage channel that runs in parallel with the Ancholme. As it flows further north the river also loses its identity becoming the East drain, when it is joined by the Kingerby Beck.