With the exception of the Lake that has an outer ridge that maintains a constant distance of 10 km from the center of the lake and stands at an elevation of 50 to 80m, the rest of the district cannot boast of any unique topographical features. The drainage pattern of Bosomtwe District is dendritic. The rivers flow in a north- south direction. Around Lake Bosomtwe, there is an internal drainage where the streams flow from surrounding highlands into the lake. The rivers are perennial. They also form a dense network due to the double maxima rainfall regime. Notable rivers in the district are rivers Oda, Butu, Siso, Supan and Adanbanwe.