monalisha mili


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.


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

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Arogyaswamy, R.N.P., 1971. Some geological factors influencing the behaviour of the Kosi. Records of the Geological Survey of India 96, p 42–52.

Bahadur, J. (2004): Himalayan Snow and Glaciers: Associated Environmental Problems, Progress and Prospects. Concept Publ. Co., New Delhi.

Basu, S.R. & Sarkar, S., (1985). Some consideration on recent landslides at Tindharia and their Control; Indian Journal of Power and River Valley Development, Oct.-Nov., pp. 45-53

Becker, A. and Serban, P., 1990. Hydrological models for water resources system design and operation. In: Operational Hydrology, WMO Report No. 34, 80 pp

Casper, M.C., (2012).Analysis of projected hydrological behaviour of catchment based on signature indices. Hydrology of .Earth Sysemt sience.,16.409-421.

Chakraborty, S. Datta, K., (2013). Causes and Consequences of Channel Changes – A Spatio-Temporal Analysis Using Remote Sensing and GIS— Jaldhaka-Diana River System (Lower Course) journals of environment and earth science, vol. 3, no.13

Deb, R R. Das, N., (2012). A Study on Temporal Change in Bank Line of River Khowai at Alepsha, Khowai District, Tripura .Vol.1. IJSR – International journal of scientific Research.

District Census Handbook. (2011)

GSI (2001) .Geology and mineral resources of Districts of Sikkim; Geol. Survey. India.; Eastern Region; pp. 1-44.

Mantanari,A.,(2012).Hydrology of Po river: looking for changing patterns in river discharge .Hydrology of Earth System Sciences.,16,3739-3747.

Roy, N., Sinha, R., (2007). Understanding confluence dynamics in the alluvial Ganga Ramganga valley, India: an integrated approach using geomorphology and hydrology, Geomorphology 92, p 182-19

Singh, P. and Kumar, N., (1996). Determination of snowmelt factor in the Himalayan region. Hydrological Sciences Journal, 41: 301–310.

Singh, P. Kumar, N. (1996). Impact assessment of climate change on hydrological response of snow and glacier melt runoff dominated Himalayan River. Journal of Hydrology. 316-350.

Vivek k. Arora and George J.Boer (2001). Effect of simulated climate changes on the hydrology of major river basin; journals of Geophysical Research, vol.106.No.D4, P 3335-3348.


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