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INDIAN JOURNAL OF GEOMORPHOLOGY, Volume 24 (1+2), Jan.-June + July-Dec., 2019, pp.45-70

ANALYSIS OF RIVER LONG PROFILE AND HYDRAULIC GEOMETRY TO EVALUATE THE PRESENT SCENARIO OF KULIK RIVER, INDIA AND BANGLADESH

Dr. Rumki Sarkar

Associate Professor, Department of Geography, Raiganj University Uttar Dinajpur, West Bengal (India) 2

Biswajit Das

Research Scholar, Department of Geography, Raiganj University, Uttar Dinajpur, West Bengal (India)

Ganesh Biswas

Research Scholar, Department of Geography, Raiganj University, Uttar Dinajpur, West Bengal (India)

Abstract

The river long profile analysis has been studied over the past several decades to decode the nature of river. The morphology of a river channel is the resultant effect of the interactions among a number of factors. Mainly lithology, slope, hydraulic characteristics like width, depth, velocity, sediment present in the fluid, etc. control the morphology of a river channel which in turn effect the mechanics of flow. Erosion, transportation and deposition shape the long profile as well as the cross profile. Meandering river in flood plain oscillates due to alternate erosion and deposition. Thalweg points shift over time and space. River energy gradient varies thought out the channel and finally the river tends to erosion or deposition prone or stable or unstable. The migration of meander is a common phenomen on of alluvial river and is capable to affect the long profile and hydraulic geometry which in turn controls the fold plain evolution. This paper presents a detail account of long profiles and hydraulic geometry to evaluate the present scenario of the Kulik River.

 

Key word: Long Profile, Hydraulic Geometry, Regarded Profile, Thalweg.