The two big rivers which originated in the Deccan Plateau are the Godavari and the Krishna.

Origin of the Godavari River:
- The Godavari River originates from the Brahmagiri Mountains in the Western Ghats of Maharashtra
- It flows eastward through the Deccan Plateau and empties into the Bay of Bengal
- The river has a total length of 1,465 km, making it the second longest river in India after the Ganges
- It is also known as Dakshin Ganga or the Ganges of the South

Origin of the Krishna River:
- The Krishna River originates from the Mahabaleshwar in the Western Ghats of Maharashtra
- It flows eastward through the Deccan Plateau and empties into the Bay of Bengal
- The river has a total length of 1,400 km, making it the fourth longest river in India
- It is also known as Krishnaveni or the Black River

Significance of the Godavari and Krishna Rivers:
- The Godavari and Krishna Rivers are important sources of water for irrigation and hydroelectric power generation in the Deccan Plateau
- The Godavari River basin is home to various wildlife sanctuaries and national parks such as the Papikonda Wildlife Sanctuary and the Kinnerasani Wildlife Sanctuary
- The Krishna River basin is home to various historical sites such as the Vijayawada Fort and the Amaravati Stupa

In conclusion, the Godavari and Krishna Rivers are two major rivers that originate in the Deccan Plateau and are important sources of water and biodiversity in the region.

There are 3 rivers of Deccan Plateau that flow into the Bay of Bengal. These are Krishna, Godavari, and Cauvery.