The rainfall data analysis in Teesta catchment shows that the river discharge is motivated by the heavy rainfall. It is also shown from stage and discharge analysis that the time of occurrence of peak floods for different years is commonly during the end of June. The variations of discharge with stage along with looping property are presented graphically at Coronation bridge, Teesta Bazar and Domohani. Analysis of annual peak discharge data at Domohani on the bank of the Teesta river helps to arrive at a conclusion with regard to the probable maximum magnitude of flood that may occur in near and remote future. -from Author