The eastern two-thirds of the District belong to the drainage system of the Wainganga and except for the northern range of the Satpura consist of an undulating plain of cultivation, broken only by isolated hills and by the hollows and depressions marking the course of the innumerable streams, which traverse its surface and feed the larger rivers. The chief rivers of this tract are the Pench and Kanhan, both of which flow down from the Satpura range in the Chhindwara District , and meet at Kamptee where they are also joined by the Koilar. The upper reaches of the Pench among the hills and jungles north of Bhiugarh afford some pleasing views. The Kanhan, entering the District near Baregaon, takes a south-easterly course past Khapa to Kamptee, where it receives the Pench and Koilar and is crossed by two bridges. In its subsequent course it marks the boundary of the Ramtek tahsil, and after receiving the Nag river near the hills of Bhiukund, finally empties itself into the Wainganga at Gondpipri in Bhandara. The Koilar rises in the northeast corner of the Katol tahsil and after passing through the rocky country of Lohgarh in the Pilkapar range, emerges into the fertile plain of Saoner and separates the Nagpur from the Ramtek tahsil until its bed is generally rocky. At Patansaongi it receives the Chandrabhaga, which brings in the drainage of the Kalmeshwar plain. It is bridged at Dahegaon, where it is crossed by the road from Nagpur to Chhindwara. The doab of Patansaogi on the narrow strip of fand enclosed between the Koilar and the Kanhan, are the most fertile and highly cultivated portions of the Ramtek tahsil.