Author(s): Deepak Khare, Lakhwinder Singh, Mahesh Kumar Jat
Linked Author(s): DEEPAK KHARE
Keywords: Surface runoff, Impact of Landuse, Urban Watershed Runoff, Urban Hydrology, Runoff and landuse
Abstract: The present study shows that landuse change has major impact on runoff of natural urban catchment. The landuse of the year 1980 and 2011 have been prepared and used in the SWAT model. It has been found the runoff increases by 14. 95% at the major outlet of urban watershed of the city Jaipur. The urbanization has shown considerable increase in the urban area from 39. 23 km2 to 97. 89 km2 i. e. 149. 53% over a span of 21 years. Similarly calculated for other condition of landuse change as in this present study. Increasing urban runoff results in urban flooding, therefore assessment of quantum of increase can help the water resources planner of the city to plan adaptation techniques. The present study is an attempt to provide the impact of urbanization over the total horizon of around 44 years with digital data present form 1972, though only one such result is indicated. For High accurate elevation value Cartosat-1 Digital Elevation Model (DEM) with 30m spatial resolution is used, provided by ISRO Bhuvan Data Portal. Cartosat-1 V3 DEM are highly accurate due to fixed elevation on water bodies, which does not impact during simulation. Model is simulated with each change in landuse and runoff, groundwater is calculated. Simulation runs number of times with changing landuse considering same rainfall to calculates runoff at the outlet with landuse change
Year: 2017