Complex sentence: The Cauvery Delta begins west of the city as the Kavery River splits into two, forming the island of Srirangam; now incorporated into the Tiruchirappalli City Municipal Corporation.
Split into simpler sentences: The Cauvery Delta commences west of the city, as the Kavery River splits into two, forming the island of Srirangam. Srirangam is now incorporated into the Tiruchirappalli City Municipal Corporation.