The geography of Southampton is influenced by the sea and rivers. The city lies at the northern tip of the Southampton Water, a deep water estuary, which is a ria formed at the end of the last Ice Age. Here, the rivers Test and <answer>Itchen</answer> converge. The Test—which has salt marsh that makes it ideal for salmon fishing—runs along the western edge of the city, while the <answer>Itchen</answer> splits Southampton in two—east and west. The city centre is located between the two rivers.
Which river splits the city of Southampton into an east section and a west section?
Itchen