Flood processes vary spatially and temporally within a drainage basin with their locations and magnitudes also varying accordingly with distinct effects upon the environment. Meteorological events have not been change in a great scale as far knowledge is concerned, in comprising to the abruption have been intruded or trespassed in the inundation events of a basin as well as its consequences. So, why such smart bent of change is looming large question to us. Actually river system ecology is guided by its own principles. Wherever conceited human being have extended their interference in terms of river movement mechanization though Dam or Barrage, dimensionless, misguided pattern of land use directly and indirectly have influenced a lot to change the fluvio-morphic characteristics within and off the river course, and whole hearted attempt have therefore been taken to examine spatio-temporal pattern of changeover of such irregular hydrological phenomena like flood. A brief quantitative and qualitative discussion with very down to earth manner in regard to regional problems-perspective is the focusing importance of this work.