HYDROLOGICAL BEHAVIOUR OF THE LOWER COURSE OF THE LACHUNG RIVER BASIN, NORTH SIKKIM

monalisha mili

Abstract


Hydrological system of the Lachung River under craves changes due to eradicate pattern of rainfall, the building of embankment, sand mining, construction of dams and barrages and roads. The stretch of the river is further affected by human activities. Local people collect sediment (in the form of stone and sand) from the riverbed unscientifically. It has made the river bed very much irregular and undulating. The Lachung basin is located in the Upper North- Eastern reaches of the Teesta River in Sikkim. The area varies in terms of physical condition, such as Topography, Climate, Soil, Geology, Drainage, and Vegetation. The prime objective of the study is to analysis the hydrological changes of the lower course of Lachung river basin. Primary data were collected by using various field-based instruments from different parts of the river. Satellite imageries have been used for preparing maps on temporal channel shifting of the River in GIS environment. The study reveals that due to human intervention land-use/ landcover has changed and also have an impact on hydrological conditions.


Keywords


Human intervention, Hydrological changes, Temporal channel shifting, Landuse-landcover

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References


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