Geo-spatial analysis of Watershed Characteristics Using Remote Sensing and GIS Techniques: A case study of Kassai watershed, West Bengal, India

Goutam Kumar Das; Pijush Kanti Dandapath

Authors

Goutam Kumar Das Dept. of Geography, Bajkul Milani Mahavidyalaya, Purba Medinipur, West Bengal, India
Pijush Kanti Dandapath Dept. of Geography, Bajkul Milani Mahavidyalaya, Purba Medinipur, West Bengal, India

Keywords:

GIS, image processing, morphometric analysis, remote sensing, watershed

Abstract

Watershed is a natural hydrological entity which allows surface run-off to a defined channel, drainage, stream or river at a particular point. It is the basic unit of water supply, which evolves over time. Morphometric analysis is a quantitative description and analysis of landforms as practiced in geomorphology that applied to a particular kind of landform or to drainage basins. Remote sensing (RS), Geographical Information System (GIS) has proved to be an efficient tool in delineation of drainage pattern and water resources management and its planning. In the present study, GIS and image processing techniques have been adopted for the identification of morphological features and analyzing their properties of the Kassai river Basin, West Bengal, India. The basin morphometric parameters such as linear and aerial aspects of the river basin were determined and computed. The study area covers 6929.134 km2 comprising of 14 sub-watersheds. The drainage network of 14 sub-watersheds was delineated using Aster DEM remote sensing data and standard Survey of India topographical maps on 1:50,000 scale. The drainage network shows that the terrain exhibits dendritic to sub-dendritic drainage pattern. The highest stream order is fourth order. Estimated drainage density is approximately 0.35 per km2 and has very coarse to coarse drainage texture. The mean bifurcation ratio is 4.14 that indicate uniform geological structure and lithologies in watershed area. The investigation has shown that as the order of stream increases total length of stream segments is decreases. Hence, it can be concluded that there is a relationship between stream numbers and stream lengths as per the Horton's law of stream length. The elongation ratio shows that Kassai watershed possesses elongated shape pattern. The study showed that GIS techniques proved to be a competent tool in morphometric analysis.

References

Clarke, J. I. (1966). Morphometry from maps. In Essays in geomorphology, G.H. Dury (ed.). London; Heinemann. Pp. 235–274.
Chorley, R. J. (1967). Models in Geomorphology, in Physical and Information Models in Geography edited by R. J. Chorley and P. Haggett, Methuen and Co. Ltd. Pp. 57-96.
Chorley, R. J. (1969). Introduction to physical hydrology. Methuen and Co. Ltd., Suffolk. Pp. 211.
Dandapath, P. K., Oraon, G. and Jana, S. R. (2016). Tourism caused jeopardize of biodiversity: a case study on Mandermoni–Dadanpatrabarh coastal tourist destination in Purba Medinipur district, West Bengal, India. International Journal of Experimental Research and Review. 4: 40-44.
Halder, R. (2016). Work participation rate and development status of Bongaon, Basirhat and Barasat subdivisions of North 24 Parganas District, West Bengal, India. International Journal of Experimental Research and Review. 3: 30-40.
Horton, R. E. (2015). Drainage basin characteristics. Am. Geophys. Union. Trans. 13: 348–352.
Horton, R. E. (1945). Erosional development of streams and their drainage basins: Hydrophysical approach to quantitative morphology. Geol. Soc. Am. Bull. 56: 275- 370.
Leopold, L. B. (1973). River channel changes with time: an example. Geol. Soc. Am. Bull. 84: 1845–60.
Martínez-Casasnovas, J. A. and Stuiver, H. J. (1998). Automatic delineation of drainage networks and elementary catchments from Digital Elevation Models. International Journal of Aerospace Survey and Earth Sciences (ITC Journal). 3/4: 198-208.
Morgan, R. P. C. (1976). The role of climate in the denudation system: a case study from West Malaysia. In Geomorphology and climate, E. Derbyshire (ed.). Pp. 319–44.
Singh, S., Srivastava, R. (1976). Morphometric determinants of the stage of cycle or erosion. The Geographic Observer. 12: 31- 44.
Singh, S. (1950). Geomorphology. Prayag Pustak Bhawan Allahabad. Smith, K. G. (1950). Standards for grading texture of erosional topography. Am. J. Sci. 248: 655–668.
Strahler, A. N. (2009). Quantitative geomorphology of drainage basins and channel networks. In: Chow, V. T., Handbook of applied hydrology. McGraw Hill Book.