| Total Cauvery River basin Area 47474.56 sq.km |
| 1 |
Chinnar |
1749.822 sq.km |
Chinnar, Cauvery, Varattupallam |
Dharmapuri, Krishnagiri |
Chinnar, Kesarigulihalla |
13 |
| 2 |
Dodda Halla |
835.887 sq.km |
Dodda Halla |
Krishnagiri |
– |
4 |
| 3 |
Mettur Reservoir to Noyel Confluence |
5403.609 sq.km |
Palar, Thoppur, Vallampulipallam, Ullur Pallam, Bodatipallam, Nilararihalla, Chittar, Sarabhanga |
Dharmapuri, Erode, Namakkal, Salem |
Mettur (Stanley), Nagavathy, Thoppaiyar |
61 |
| 4 |
Palar Tatta Halla |
1292.953 sq.km |
Chikahole, Karaimaduvupallam, Palar, Koppapallam, Maniyarhalla |
Erode |
– |
0 |
| 5 |
Moyar |
2066.574 sq.km |
Sigurpallam, Moyar, Perumpallam |
Nilagiris |
– |
0 |
| 6 |
Upper Bhavani |
1806.91 sq.km |
Kundar, Gandapallam, Ellarumaipallam, Maruthurpallam, Periyapallam |
Coimbatore |
Upper Bhavani, Bhavani Sagar |
2 |
| 7 |
Lower Bhavani |
2402.593 sq.km |
Gundirpallam, Vannarodai, Perumpallam, Bhavani |
Erode |
Kodivery, Perumballam, Varattupallam, Gunderipallam |
19 |
| 8 |
Noyel |
3535.821 sq.km |
Sanganurpallam, Kodangipallam, Tannasipallam, Vannathangaraipallam, Noyal, Chinnakarainadhi |
Thirupur, Erode, Dindigul |
Noyal Athupalayam Noyal Orathupalayam |
47 |
| 9 |
Tirumanimuttar |
2476.973 sq.km |
Tirumanimuttar |
Namakkal, Salem |
– |
67 |
| 10 |
Amaravathi |
9254.999 sq.km |
Vattamalaikarai, Senjerikarai, Uppar odai, Uppar, Nallathangal Odai, Varattukarai, Pachaiyar, Porandalar, Attiodai, Kumbur Ar, Odakarai, Santhanarvardhani Ar, Kodavanar, Nangajiyar, Shanmugachittar, Andhankarai, Amaravathi |
Karur, Dindigul, Thirupur |
Amaravathi, PalarPorandalar, Kodaganar, Nanganjiyar Nallathangai Odai Vattamalakarai Odai, Uppar, Kuthiraiyar, Varadhamanadhi, Parappalar |
120 |
| 11 |
Karaipottanar |
1001.382 sq.km |
Ruthiraikombai, Karaipottanar |
Namakkal, Trichy |
– |
35 |
| 12 |
Pungar (Upper Coleroon) |
1308.691 sq.km |
Nappilli, Pungar |
Karur, Trichy |
– |
13 |
| 13 |
Ayiaar |
1326.503 sq.km |
Gundarnadhi, Ayiaar |
Namakkal, Trichy |
– |
37 |
| 14 |
Ponnaniyar |
1798.693 sq.km |
Mamudai Ar, Ponnaniyar, Sangalar |
Trichy, Pudukottai, Karur |
Ponnaniyar |
111 |
| 15 |
Nandiyar – Kulaiyar |
1532.27 sq.km |
Uppar, Uppodai, Nandiyar, Upodaiyar, Kulaiyar |
Trichy, Ariyalur, Perambalur |
Uppar |
59 |
| 16 |
Marudaiyar |
877.162 sq.km |
Kandiyar, Vilangudi Odai, Maruthaiyar |
Ariyalur, Perambalur |
– |
45 |
| 17 |
Lower Coleroon |
1500.562 sq.km |
Uppanar |
Ariyalur, Cudallore |
Sidhamalli |
24 |
| 18 |
Cauvery Delta |
7303.151 sq.km |
Vennar, Cholagapattivari, Kodamuriti river, Mudikondan, Puttar,Vettar, Nattar, Kollidam, Periya Odai, Palavar, Vikramanar, Virasolanar, Arasalar, Tirumalairajanar, Sevanar, Puravanthaiyanar, Pammaniyar, Harichandranadhi Adappar, Marakkakoraiyar, Kandaparisanar, Mulliyar, Valavanar, Managundan, Permalar, Kilaithangal, Kandakurichan, Pondavaiyar, Koduvaiyar, Sulan Ar |
Thanjavur, Thiruvarur, Nagapattinam |
– |
297 |
