Vennaaru River

The river begins at the Grand Anaicut at the eastern end of Srirangam Island, where it branches off from the Kaveri.

Northwest of Thennankudi, at the Thenperambur dam, the Vennar splits into a northern and southern branch.

After the convergence, the Vennar flows east again, before turning to the northeast and emptying into the Bay of Bengal south of Velankanni.

[3] The name Vennaaru originates from the 'Venniaaru' which was constructed by Karikal Cholan after his famous victory at Vennipparanthalai battle.

Like other rivers in the Kaveri delta, the Vennar was important for transportation during the Chola period.