International Conference on Advances in Civil, Structural and Environmental Engineering - ACSEE 2013
Author(s) : RATUL DAS
During last 20 years the share of urban populations to the country has increased 14% to 30%. This rapid urbanization brings significant changes in the nature of land surfaces in urban areas which affects the runoff process and overland flows during flood. Efficient computation of potentiality of overland flow on a modified land use is a difficult task and equally essential requirements to achieve optimal performances of storm water drainage systems. Present study is an attempt to highlight the role infiltration capacity of soil for efficient design of storm water drainage. Central Agartala, mainly a low lying area experiences severe water logging at many places during monsoon. Land use maps and soil categorization based on infiltration characteristics were performed by field observations at many places of the study area. Necessary hydro-meteorological parameters including various drainage data were collected to compute the flow volume at the inlet of each sub-drainage zone. SCS Curve number methods were adopted as design philosophy in the present study and the results obtained are compared with field observation. This provides inputs for the validation of calibrated parameters. The accumulated flow volume was used to identify the extension of water-logged areas and a probable solution to remove the stagnation of waters during flood.