Terzaghi’s one-dimensional consolidation analysis, in general, assumes uniform distribution of excess pore pressure instantaneously after the application of pressure. Some researchers during late last century reported that for these cases pore pressure increases gradually after application of loading and reaches a peak value which is comparatively lesser than the load applied before it starts decaying. This may be attributed to the reduction in coefficient of permeability of the soil also leading to a time lag in the generation of excess pore pressure. Further it may be noted that a major portion of subsoil in Kolkata region consists of a top thick deposit of soft and compressible silty clay/clayey silt with varying percentages of organic matter whose behaviour needs to be studied in order to analyse the stability structures constructed over this deposit. This paper presents a series of conventional one-dimensional consolidation tests carried out on a typical locally available organic clays in a conventional incremental load (IL) consolidation cell after modifying it by connecting a pore pressure gauge at the bottom for measuring temporal variation of pore water pressure. It was observed that during initial load increments the excess pore pressure was developed quickly and its magnitude was comparatively higher. However, on subsequent load increments, there was considerable time lag in pore pressure generation and also magnitude of pressure generated was substantially lesser than the applied pressure. All these are in line with the observations of earlier investigators and appeared to be useful in consolidation analysis for realistic prediction of settlement of soil.