1. i) Upper Cauvery river basin (i.e. part of Cauvery basin which is lying in Kerala and Karnataka)
2. ii) Right side tributaries of Krishna river flowing in Karnataka namely Malaprabha, Ghataprabha and Tungabhadra (only above Tungabhadra reservoir).
3. iii) West flowing rivers draining into Arabian sea in Goa and Southern part of Maharashtra (i.e. uptoKajvi River basin).

The above river basin are spread in the States of Karnataka, Kerala,Maharashtra and Goa.

East-flowing Rivers In Karnataka

SrNo.
River System
Basin States
Principal Tributaries

1.
Krishna
Maharastra, Karnataka, Andhra Pradesh, Telangna
Ghataprabha, Malaprabha, Bhima, Tungabhadra

2.
Cauvery
Karnataka, TN, Kerala, Pudducherry
Harangi, Hemavathy, Kabini, Suvarnavathy, Lakshmanathirtha, Shimsha, Arkavathy

3.
Pennar
Karnataka, Andhra Pradesh, Tamil Nadu
Jayamangali, Chitravathy and Papagni

4.
Godavari
Maharastra, Madhya Pradesh,Chhattisagarh, Karnataka, Andhra Pradesh, Telangna, Orissa
Pravara, Purna, Manjra, Pranahita, Indravathy and Sabari

5.
Palar
Karnataka, Andhra Pradesh , TN
Cheyyar

West-flowing Rivers In Karnataka

S.No.
River System
Basin States
Tributaries

1.
Mahadayi/ Mandavi
Karnataka,Goa
Maderi

2.
Kalinadi
Karnataka
Pandhari, Tatti-halla and Nagi

3.
Gangavalli (Bedthi)
Karnataka
-

4.
Aghanashini (Tadri)
Karnataka
-

5.
Sharavathi
Karnataka
Nandihole, Haridravathi, Mavinahole, Hilkunji, Yennehole, Hurlihole and Nagodihole

6.
Chakra Nadi
Karnataka
Kollur

7.
Varahi (Haladi)
Karnataka
Shettykoppa,Halige, Kollavadi and Bangaragalli