Daya River is a branch shooting of Kuakhai River and empties into the Chilika Lake known for the Dolphins. The river is historically important, not only in terms of the history of Odisha-Bihar region, but of India as whole. It is on the banks of Daya, in the green slopes adjoining the Dhauli Hills that the famous Kalinga War was fought, which marked an end of Emperor Ashoka's violent ways and embracing Buddhism. There are many Ashokan edicts here, carved on the surface of rocks up along the hill.