Chittar, also called Chitranathi is a major tributary of the river Tamiraparani. It originates from the eastern slopes of the Western Ghats in the Kuttalam hills, at an altitude of 1750 m above mean sea level. The splendid cascades in Kuttalam and its suburbs are caused by this river. For its curative value, the river is often compared to the famous Spa falls of Belgium. Chittar traverses a total distance of 80 km before merging with the river Tamiraparani near the Sivalapperi village of Tirunelveli Taluk.
or Govindar and
are its major tributaries. It is also a major source of irrigation in the district.