The water resources of Bali Lake are abundant and the storage capacity is large.The current flood dispatching scheme of Bali Lake has some problems，such as incompatibility with the design and operation conditions of existing drainage engineering，difficult to operate and so on.According to the existing design and operation conditions of the existing waterlogging sluice(station)，through the comprehensive analysis and calculation of the annual rainfall data，the water level of the river，the current status of the lake area and the capacity of the sluice and electric discharge，and the multi project joint dispatching，the characteristic water of the control water level and the discharge level of the eight Li Lake in the flood season is reasonably determined.In order to ensure the safety of the eight Li Lake，it can also give consideration to the urban landscape water.