[citation needed] Nanganji, Kodavanar, Shanmuga nadhi, Uppar, Kudumiar, Thenar and many other tributaries join with the Amravati river.

[citation needed] This river irrigates over 60,000 acres (240 km2) of agricultural lands in Tiruppur and Karur districts.

The Amaravathi River and its basin, especially in the vicinity of Karur, are heavily used for industrial processing water and waste disposal and as a result are severely polluted due to large amount of textile dyeing and bleaching units.

But nowadays in karur, the changes are vicinity by seeing Amaravati river on its clean surface because of pollution controlled by government.

The Amaravathi river swells into life in the Anjanad valley (Anaimalai, Kerala state) of the Western Ghats, whose slopes are awash with Kurinji blossoms once every 12 years, descends to the plains near Udumalaipettai, Tamil Nadu, and flows to make the rich plains of Dharapuram and Karur .