Flow pattern in flooding pipes can be considerably changed by inserting a rod or posing a cross flow at the top end. A non-uniform flow pattern around the circumference due to the inserted rod was observed in the present experiment. By increasing the diameter of the rod, a similar flow pattern as that in a thin rectangular channel was observed and the partial delivery flow rate could be predicted well with the correlation for the thin rectangular channel. The cross flow at the top end resulted in a non-uniform distribution of the water film around the pipe periphery. The partial delivery of water flow was decreased when the cross flow velocity was increased at a given gas velocity. The limitation mechanism for the cross flow energy of the delivery water was considered.