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Vulnerability assessment of the Satluj catchment for sustainable development of hydroelectric projects in the northwestern Himalaya

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Journal of Mountain Science 2019年第12期16卷 2714-2738页

作者： Jagdish Chandra KUNIYAL Amit JAMWAL Nidhi KANWAR Bhim CHAND Kireet KUMAR Pitamber Prasad DHYANI G.B.Pant National Institute of Himalayan Environment and Sustainable Development Kosi-KatarmalAlmora-263643UttarakhandIndia G.B.Pant National Institute of Himalayan Environment and Sustainable Development Himachal Regional CentreMohal-Kullu-175126Himachal PradeshIndia Sri Dev Suman Uttarakhand University BadshahitholTehriUttarakhandIndia

Hydropower if scientifically developed is considered to be one of the clean and non-polluted renewable energy *** its impacts always exist on physical and social environment of the *** present study was conducted in the River Satluj basin which is well known for its hydropower *** main objective of the study was to understand the vulnerability of the Satluj basin and to develop a strategy for the development of hydropower *** basin has been facing many problems relating to construction of haphazard development of hydropower *** has led multi-hazards like landslides,floods,earthquakes,***,vulnerability assessment index was assessed quantitatively and *** Information System and people’s perception were used to study these aspects in the *** parameters considered for vulnerability assessment were slope,slope profile,relative relief,curvature,slope aspect,soil texture,lithology,river morphometry,precipitation,hydroelectric projects,land use and land cover,mass-movement,flood,geological elements and earthquake *** highest vulnerability was found in the middle zone,and finally on the basis of parameters analyzed;the hydropower’s development strategy was developed.

关键词： Hazards Vulnerability assessment hydroelectric projects Sustainable development Satluj basin

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Changes in Streamflow Regime Due to Anthropogenic Regulations in the Humid Tropical Western Ghats, Kerala State, India

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Journal of Mountain Science 2015年第2期12卷 456-470页

作者： ABE George ERINJERY JOSEPH James Centre for Water Resources Development and Management Sub centre Water Institute Karunya University

Regulation of streamflow by a reservoir creates a flow regime much different from the preimpoundment period flow regime. Hydro-Electric projects(HEPs) commissioned in the Western Ghat regions of the Kerala State, India during the last four decades caused considerable changes in the flow regimes of the rivers of the Kerala State in southwest India. In this paper, the Indicators of Hydrologic Alteration(IHA) approach proposed by Richter et al.(1996) is used to analyze flow regime changes in the Periyar and Muvattupuzha Rivers, due to the construction of the Idukki(1976), Idamalayar(1987) and Lower Periyar(1997) HEPs in the high ranges of the Western Ghats. Normal rainfall years(annual rainfall values within mean ± 0.75 standard deviation limits) are only considered in the analysis to focus on hydrologic alterations due to human activities. The mean hydrologic alteration in the Periyar River(deviation from the pre-development hydrologic indicator values) after commissioning of three HEPs is 35%. Inter-basin water transfer after power generation from the Idukki HEP resulted in a higher discharge in the adjacent Muvattupuzha River, leading to considerable changes in the hydroenvironment(mean hydrologic alterations varying between 57 to 63%). IHA parameters showing hydrologic alterations above the 67 th Percentile werefurther analyzed. For each of the pre-construction hydrologic parameters ± 1 standard deviation from the mean is set as the upper and lower management target limits. The values of each IHA parameter beyond these targets are considered as nonattainment. Considerable hydrologic alterations are observed, especially for low flows in both basins. Inter-basin transfer induced larger changes in flow parameters compared to intra-basin regulations. The study shows that under a proper water release and diversion scheme, the non-attainment of IHA parameters(values fall beyond the target limits) can be reduced. The findings of the study will be greatly beneficial to reg

关键词： Range variability approach hydroelectric projects Humid tropics Flow regime changes Inter-basin regulation Intra-basin regulation

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