Explanation:

- Narmada: This river flows westward, traversing through central India. It eventually empties into the Arabian Sea. It's one of the few major rivers in India that takes this westward path.

- Ganga: This is a prominent river in northern India, flowing eastward. It finally empties into the Bay of Bengal.

- Mahanadi: Originating in central India, the Mahanadi flows eastward, eventually reaching the Bay of Bengal.

- Godavari: Known as the Dakshin Ganga or the Ganges of the South, this river flows eastward and also drains into the Bay of Bengal.