Estimation of Sediment Yield of Ong Catchment of Orissa using Universal Soil Loss Equation

Abstract

— For a specific duration, it is extremely hard to measure exact soil erosion. On the basis of watershed, numerous tests and hypothetical strategies have been inferred for erosion estimation. The Ong catchment at lower Mahanadi site is chosen here for the study due to the ease of accessibility related with the desired information at different areas inside watershed zone. For my area of research, i.e. river channel of Orissa, India, the strategy includes GIS which is utilized for the calculation of sediment yield. In this technique, spatial information of Ong catchment is segregated in individual characterized units to analyze features of the catchment. In every unit, net erosion is determined utilizing the USLE by deciding different boundaries of unit. The maps generated through arcGIS mapping portray the measure of silt through a specific site in spatial surroundings; the pixel estimation demonstrates the residue yield at the watershed outlet. By investigation of information of Ong catchment with the technique of USLE, the yearly residue yield of Ong catchment gives great concurrence, with a variation of ± 33%.