Electricity demand is increasing worldwide. Water power is one of the major sources of energy. In hydro power plants, water turbine is one of the most important parts to generate electricity. This runner of Cross-flow, Banki-Mitchell turbine is designed to produce 10kW electric power from head of 14m and the flow rate of 0.123 m3/s. For the given capacity, the dimensions of turbine diameter and width are 150 mm and 320 mm. According to these data, the important part of cross-flow turbine runner can be constructed.