How many drainage systems in india what are they​

The drainage system of India, that is, the rivers, is divided into two major groups:

the Himalayan rivers.

the Peninsular rivers.

which includes 14 drainage basins such as the Ganga, the Brahmaputra, the Krishna, the Tapi, the Narmada, the Mahi, the Pennar, the Sabarmati, the Barak,etc