scholarly journals Assessment of Dam-Induced Changes in Ecogeomorphological Behaviour and Fluvial Functionality in the Damodar River, West Bengal, India

2021 ◽  
Author(s):  
Sandipan Ghosh ◽  
Md. Mofizul Hoque ◽  
Ujwal Deep Saha ◽  
Aznarul Islam
Keyword(s):  
West Bengal ◽  
Ecological Integrity ◽  
Sand Mining ◽  
Agricultural Growth ◽  
Flow Alteration ◽  
Damodar Valley ◽  
Damodar River ◽  
Ecological Functionality ◽  
Induced Changes ◽  
Basin Area

Abstract Anthropogenic interventions in the form of dams and barrages often alter the fluvial functionality and ecogeomorphological (geomorphology, hydrology, and ecology) behaviour of the river systems. The present work examines the environmental flow, channel metamorphosis, and fluvial functionality of Damodar River in the context of Damodar Valley Corporation (DVC) dams and development. The structural (dams, barrages, weirs, etc.) and non-structural (urban-industrial and agricultural disposal with effluents, sand mining, etc.) interventions hinder the ecological functionality of the river. This study portrays that the eco-geomorphological behaviour and fluvial functionality of the river have changed due to flow alteration and diversion by dams and barrages and due to the urban-industrial and agricultural growth in the basin area. These changes have affected riverine ecological integrity. The ecological functionality level of this study area ranges from 85 to 181 i.e. poor to good-fair. The ecological functionality level in sample channel sections (i.e., immediate upstream and downstream of Durgapur Barrage) is poor, and the value ranges from 61 to 100 due to the hydrological impact of the barrage and the Durgapur urban-industrial belt. This assessment work would help to restore the fluvial environment for humans as well as riverine biota.

scholarly journals Geographic Concerns on Flood Climate and Flood Hydrology in Monsoon-Dominated Damodar River Basin, Eastern India

2015 ◽  
Vol 2015 ◽  
pp. 1-16 ◽  
Author(s):  
Sandipan Ghosh ◽  
Biswaranjan Mistri
Keyword(s):  
Carrying Capacity ◽  
West Bengal ◽  
Extreme Rainfall ◽  
Regulation System ◽  
Gangetic Plain ◽  
Existing Problems ◽  
Damodar Valley ◽  
Prolonged Duration ◽  
Damodar River ◽  
Damodar River Basin

In the Lower Gangetic Plain of West Bengal, the furious monsoon flood of Damodar River is a recurrent hydrometeorological phenomenon which is now intensified by the human activities. At present, the flood regulation system of Damodar Valley Corporation (DVC) is not capable of managing gigantic inflow water (which appeared as surface runoff and channel flow) coming from the wide fan-shaped upper catchment of Damodar River. As a result, the lower basin of Damodar (covering Barddhaman, Hooghly, and Howrah districts of West Bengal) annually experiences low to high magnitude of floods and overflow condition because the existing canal system, streams, palaeochannels, and Damodar River itself have lost their former carrying capacity to accommodate all excess water within its active domain due to over siltation and drainage congestion. So when the DVC dams are not able to regulate flood flow, then extreme rainfall of prolonged duration over the basin turns the normal situation into devastating flood, like the years of 1978 and 2000 in West Bengal. Identifying the existing problems of lower Damodar River, this paper principally tries to assess the potentiality of flood climate and to estimate the contributing rainfall-runoff, peak discharge, and existing carrying capacity of river in relation to increasing flood risk of lower basin using the quantitative hydrologic expressions.

Population ecology ofSchizodactylus monstrosus (Drury) (Orthoptera) along the sand bed of Damodar river, West Bengal, India

1983 ◽  
Vol 92 (6) ◽  
pp. 453-466
Author(s):  
A K Hazra ◽  
R S Barman ◽  
S K Mondal ◽  
D K Choudhuri
Keyword(s):  
Population Ecology ◽  
West Bengal ◽  
Damodar River

scholarly journals Exceptional heavy rainfall over Ajoy, Mayurakshi and Kansabati catchments and QPF verification during flood season of September 2009

MAUSAM ◽  
2022 ◽  
Vol 63 (3) ◽  
pp. 479-488
Author(s):  
SOUMENDU SENGUPTA ◽  
B.K. MANDAL ◽  
D. PRADHAN
Keyword(s):  
Heavy Rainfall ◽  
West Bengal ◽  
Precipitation Forecast ◽  
Flood Season ◽  
Quantitative Precipitation Forecast ◽  
Damodar Valley ◽  
Average Precipitation ◽  
Synoptic Features ◽  
River Catchments

Ajoy, Mayurakshi, Kansabati are three important river catchments of West Bengal and Jharkhand state, received very heavy rainfall during two consecutive days of flood season in the month of September 2009. The contribution of heavy rainfall & combined discharges from Damodar Valley Corporation (DVC) reservoirs during the period of heavy rainspells over these catchments enhanced flood situation in some districts of West Bengal. The synoptic features based on weather charts, cloud imageries of satellite and radar pictures have been taken to analyse. The realized areal average precipitation (AAP) as per rainfall recorded at 0300 UTC of next day have also been taken to verify the quantitative precipitation forecast (QPF) of 6&7 September 2009.

Pattern of Industrial Growth in West Bengal during 1980–1991

2017 ◽  
Vol 12 (1) ◽  
pp. 65-88
Author(s):  
Anirban Karak
Keyword(s):  
Consumer Goods ◽  
Industrial Development ◽  
West Bengal ◽  
Value Added ◽  
Small Scale ◽  
Land Reforms ◽  
Poor Growth ◽  
Agricultural Growth ◽  
Structural Demand ◽  
The Impact

Three trends in industrial development contribute to the industrial history of West Bengal during the 1980–1991 period—the continuation of a secular decline in terms of employment and value added in manufacturing industries vis-à-vis other states, an ancillarization and flexibilization of production into small-scale factories with less than 20 workers, and a differential impact of this ancillarization on basic goods and consumer goods industries, with the former performing much better than the latter. Viewed through the theoretical lens of structural demand and agriculture–industry relations, the relatively slower growth of consumer goods industries poses a puzzle when the spectacular growth of agricultural output during the 1980s is considered. In this article, I suggest that tying together three factors—the impact of the ‘Green Revolution’ on West Bengal’s agriculture, the nature and effect of the Left Front’s land reforms, and the role of rural commercial capital—can in turn hold together three outcomes for the period 1980–1991 in a single explanation—high agricultural growth, mass poverty among the rural poor despite land reforms and agricultural growth, and the poor growth of consumer goods industries despite high agricultural growth.

Aquifer Characteristics of the Intake Wells on Damodar River near Raniganj, West Bengal, India

2013 ◽  
Vol 12 (0) ◽  
pp. 19
Author(s):  
Subhasish Das ◽  
Biswajit Majumder ◽  
Arijit Chakraborty ◽  
Bivas Mandal ◽  
Pankaj Kr. Roy ◽  
...  
Keyword(s):  
West Bengal ◽  
Damodar River ◽  
Aquifer Characteristics
Sign in / Sign up

Export Citation Format

Share Document