Basin and Sub Basin

 

S.No

Basin

Sub Basin

 

1. CHENNAI BASIN

Chennai

  1. Gummudipoondi
  2. Araniar
  3. Kosasthalaiyar
  4. Cooum
  5. Adyar
  6. Kovalam
  7. Nagari Ar
  8. Nandhi Ar

 

 

2. PALAR BASIN

palar11

 

 

 

 

 

 

 

1.       Upper Palar

  1. Malattar
  2. Kavundinyanadi
  3. Agaramar
  4. Poiney
  5. Vegavathi
  6. Cheyyar
  7. Kiliyar
  8. Lower Palar

 

 

3. VARAHANADHI BASIN

varahanadhi11

  1. Varahanadhi
  2. Ongur
  3. Nallavur 

 

 

4.       PENNAIYAR  BASIN

ponnaiyar11

 

1  1A Chinnar

2  1B Chinnar

3.   Markandanadhi

4.   Kambainallur

5.   Pambar

6.   Vanniar

7.   Kottapattikallar

8.   Mattur Ar

9.   Valayar Odai

10.   Ramakal Odai

11. Pambanar & Varattar

12. Musukundanadhi

13. Aliyar

14. Thurinjalar

15. Gadilam

16. Upto Krishnagri Reservoir

17. Krishnagiri to Pambar

18. Pambar to Thirukovilur

19. Lower Pennaiyar

 

 

5.       VELLAR  BASIN

 

Vellar11NEW

  1. Upper Vellar
  2. Gomukhi Nadhi
  3. Manimukdha Nadhi
  4. Lower Vellar
  5. Anaivari Odai
  6. Chinnar
  7. Sweta Nadhi

 

 

6. PARAVANAR BASIN

Paravanar

  1. Paravanar
  2. Uppanar

 

 

7. PARAMBIKULAM ALIYAR  BASIN

pap11

  1. Walayar
  2. Palar
  3. Aliyar
  4. Sholaiyar

 

 

8. AGNIYAR  BASIN

Kodaiyar11

  1. Agniyar
  2. Ambuliar
  3. South Vellar

 

 

9. PAMBAR KOTTAKARAYAR  BASIN

kottakarayar11new

  1. Pambar
  2. Kottakarayar
  3. Manimuthar

 

 

10. VAIGAI  BASIN

vaigai11jpg

  1. Upper Vaigai
  2. Suriliyar
  3. Theniar
  4. Varattar – Nagalar
  5. Varahanadhi
  6. Manjalar
  7. Sirumalaiyar
  8. Sathiar
  9. Uppar River
  10. Lower Vaigai

 

 

11. GUNDAR BASIN

gundar11

  1. Upper Gundar
  2. Therkar
  3. Kanal Odai
  4. Gridhamaal Nadhi
  5. Paralaiaru
  6. Uthirakosamangaiaru
  7. Palar
  8. Lower Gundar
  9. Vembar

 

 

12. VAIPPAR BASIN

vaippar11

  1. Nichabanadhi
  2. Kalingalar
  3. Deviar
  4. Nagariar
  5. Sevalaperiyar- Mudangiar
  6. Arjuna Nadhi
  7. Kousiga Nadhi
  8. Sindapalli Uppodai
  9. Uppathurar
  10. Sinkottaiar
  11. Kayalkudiar
  12. Vellampatti Odai
  13. Vaippar

 

 

13.  KALLAR  BASIN

kallar11

  1. Kallar
  2. Chalikulam Ar
  3. Korampallam Ar

 

 

14. TAMIRAPARANI  BASIN

tamiraparani11

  1. Upper Tamiraparani
  2. Manimuthar
  3. Gadana nadhi
  4. Chittar
  5. Uppodai
  6. Pachaiyar
  7. Lower Tamiraparani

 

 

15. NAMBIYAR  BASIN

Nambiyar11

  1. Karamaniyar
  2. Nambiyar
  3. Hanumanadhi

 

 

16. KODAYAR  BASIN

Kodaiyar11

  1. Kuzhithurai
  2. Chittar
  3. Pechiparai
  4. Perunchani
  5. Pazhayar
  6. Valliyar

 

 

17. CAUVERY BASIN

DRAINAGE_TANKS.jpg

  1. Moyar
  2. Bhavani
  3. Palar Kathaiahalla
  4. Santhanamuthu Thottahalli
  5. Chinnar
  6. Sarabanga – Mettur & Thoppaiar Dams
  7. Noiyyal
  8. Amaravathi
  9. Thirumanimuthar
  10. Karaipottanor
  11. Ayaru
  12. Ponnaniyar
  13. Kulaiyaru & Nandiyar
  14. Marudayaru
  15. Colleroon
  16. Cauvery Delta
  17. (Cauvery Lower) Vennar Delta

 

 

TOTAL 17 River Basins

126 Sub Basins

 

 

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