The correct answer is Between the delta of river Mahanadi and the Godavari Explanation & Key Takeaways: • Chilka lake is a brackish water lagoon, spread over the Puri, Khurda and Ganjam districts of Odisha state on the east coast of India, at the mouth of the Daya River. • The Lake is situated in between the Godavari river in the South at Andhra Pradesh. • And at the Northern side was the Mahanadi River at Odisha. • Flowing into the Bay of Bengal, covering an area of over 1,100 km2. • It is the largest coastal lagoon in India. • And the second-largest lagoon in the world. • It is the largest wintering ground for migratory birds on the Indian sub-continent. • The lake is home to a number of threatened species of plants and animals. • The lake is an ecosystem with large fishery resources.