The Mahanadi is a major river in East Central India. It drains an area of around 141,600 square kilometres and has a total course of 858 kilometres. The river flows through the states of Chhattisgarh and Odisha.The word Mahanadi literally comes from two Odia words 'maha' and nadi' meaning 'The Great River'.Like many other seasonal Indian rivers, the Mahanadi to is a combination of many mountain streams and thus its precise source is impossible to pinpoint. However, its farthest headwaters lie 6 kilometres from Pharsiya village 442 metres above sea level south of Nagri town in Dhamtari district of Chhattisgarh. The hills here are an extension of the Eastern Ghats and are a source of many other streams which then go on to join the Mahanadi.