NGJI, An International Peer-Reviewed Journal NGSI-BHU, ISSN: 0027-9374/2020/1733 Vol. 66, No. 2, June 2020 Environmental Risk Assessment: A Geomorphic Investigation over the Bolpur-Santiniketan-Illambazar Lateritic Patch of Birbhum District, West Bengal, India Vibhash C. Jha1 and Subhasis Ghosh2 1Professor of Geography, Former Vice-Chancellor, TMBU, Former Director NATMO, DST, Government of India, Visva-Bharati University, Santiniketan, West Bengal, 2Research Scholar, Department of Geography, Visva-Bharati University, Santiniketan, West Bengal, (Corresponding author's e-mail:
[email protected]) Abstract A proper geomorphic study of a region can be useful in understanding past and present environmental circumstances and analyzing potential environmental risks. Careful analysis of morphodynamic processes and existing diagnostic landforms reveal several aspects about the origin, characteristics and possible pattern of morpho-climatic interactions on the landscape over temporal scale, which helps significantly in proper terrain evaluation from societal welfare and integrated management point of view, including environmental risk assessment and disaster management. This paper has made a thorough geomorphic investigation based on intensive fieldwork and multi-sourced remote sensing data to characterize the lateritic soil profile and landforms of the study area in respect to their morphology and Physico-chemical properties at the different sites of land degradation to understand the outcome of morphoclimatic interactions on the landscape over time, and to evaluate the severity of operation with pedo-geomorphic constraints in the lateritic environment for sustainable management purposes. It is found that the region is highly sensitive to weathering, mass movement and denudational activities, mainly caused by rainwater erosion which has resulted into varied landforms including well-developed rills and gullies, lateritic ridges, isolated residual hills etc and generated a unique identity to this part of the lateritic region.