The major tributary of the Ganga, the Son, arises in one of the most important watersheds in India, the Maikal hills around Amarkantak. Three of the great rivers of India, Narmada, Mahanadi and Son, are given birth to by these hills. This is also one of the few ranges in the State having a north south configuration. The Mahanadi itself, together with its tributaries such as Hasdeo, Mand and Kharun flows southeast into Orissa and converts that State into a green rice bowl.

The upper Mahanadi catchment contains some of the finest forests in the State, ranging from mixed deciduous to teak, bamboo and Sal. Just as the Mahanadi flows east from the Maikal hills and the Son flows north, the mighty Narmada charts a westerly course from these very hills. The Narmada flows through a rift valley, with the Vindhyas marching along its northern bank and the Satpuras along the southern.

Its tributaries include the Banjar, the Tawa, the Machna, the Denwa and the Sonbhardra rivers. Taken in combination with its parallel sister river, the Tapti, which also flows through a rift valley, the Narmada - Tapti systems carry and enormous volume of water and provide drainage for almost a quarter of the land area of Madhya Pradesh.

The Satpuras, in the Gawligarh and Mahadeo Hills, also contain a watershed, which is south facing. The Indrawati, the Wainganga, the Wardha, the Pench, the Kanhan and Penganga rivers, discharge an enormous volume of water into the Godavari system. The Godavari is the lifeline of Andhra Pradesh, but the water which feeds it is a gift of the Central India watershed. Some of the finest sub-tropical, semi moist forests in India are to be found in the Godavari basin, mainly in the valley of the Indrawati. There are very few virgin forests left in the country, but very fine examples of these are to be found in Bastar area along the Indrawati and in the Kanger valley in chhattisgarh.

The importance of Central India watershed was first noted by Captain Forsyth and remarked upon in his book, “The Highlands of Central India”, first published in 1889. This is what he has to state in the introductory chapter to his book, “Yet in the very center of India there exists a considerable region to which the term highlands-is strictly applicable; and in which are enormous peaks and ranges, for which the term mountain would, in any other country, be used.

Several of the great rivers of India have their first source in this elevated region. And pour their water into the sea on either side of the peninsula - to the north the Son comingling with the Ganges, to the east the Mahanadi, flowing independently to the Bay of Bengal, to the south some of the principal feeders of the Godavari, and to the west the Narmada and the Tapti taking parallel courses to the Arabian Sea.”