Q. Karikala, the Chola king, made a grand anicut on the Kaveri, the water of which nowadays drawn off through a new channel called Vennar. Which of the following regions of Tamil Nadu does it irrigate?
(a) West Madurai
(b) South Arcot
(c) South Thanjavur
(d) Chingleput
Ans: (c) South Thanjavur
Explanation: The grand anicut on the Kaveri River, built by Karikala, the Chola king, and the subsequent channel known as Vennar, primarily irrigate the (c) South Thanjavur region of Tamil Nadu.
The Kaveri River and its irrigation system, including the anicut and channels, have played a crucial role in providing water for agricultural activities in the fertile delta region of Thanjavur. This region is known for its extensive paddy cultivation and has been traditionally dependent on the Kaveri River for irrigation. The construction of the anicut and the Vennar channel have facilitated the distribution of water to the agricultural lands in the South Thanjavur area, ensuring sustained agricultural productivity.