Complex sentence: The Cauvery Delta commences west of the city, as the river splits into two forming the island of Srirangam, which is 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.