Assessment of sedimentation in Bhakra Reservoir in the western Himalayan region using remotely sensed data

Jain, Sanjay K.; Singh, Pratap; Seth, S. M.

doi:10.1080/02626660209492924

Cited by 79 publications

(33 citation statements)

References 5 publications

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“…Also linked to deforestation within the catchment are the potential impacts on soil erosion. As discussed by Singh et al (2010), some enhanced erosion has been attributed to deforestation, while enhanced sedimentation following forest clearance has been reported in lakes within the Himalayan region (Jain et al 2002, Rai et al 2007. Were this to occur within Loktak Lake, the volume-level-area relationship employed within the lake water balance model would be expected to change.…”

Section: Discussionmentioning

confidence: 99%

Modelling water-level options for ecosystem services and assessment of climate change: Loktak Lake, northeast India

Singh

Thompson

Kingston

et al. 2011

Hydrological Sciences Journal

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Water levels within Loktak Lake, an internationally important wetland, are regulated to prioritize hydropower over other ecosystem services. High water levels have impacted ecological conditions, in particular floating vegetated islands. Barrage operation options prioritizing hydropower, agriculture and the lake ecosystem are developed using a lake water balance model. Current hydropower abstractions can be maintained without ecologically damaging high water levels. Enhanced agricultural abstractions reduce levels to meet ecological requirements. The latter could be satisfied without compromising current hydropower and agricultural abstractions. An integrated option shows it is largely possible to balance hydropower and agricultural abstractions with wetland water-level requirements. Sustainability of barrage operation options is assessed under climate change scenarios. Higher monsoon precipitation and river flow can be accommodated. Larger dry-season drawdowns impact most barrage operation options, especially the integrated option. Results demonstrate the requirement to consider current and potential future climatic conditions when developing wetland water-level management plans.

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Section: Discussionmentioning

confidence: 99%

Modelling water-level options for ecosystem services and assessment of climate change: Loktak Lake, northeast India

Singh

Thompson

Kingston

et al. 2011

Hydrological Sciences Journal

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“…Changes in precipitation may have implications for sediment delivery to the lake, which could also be influenced by land use change such as deforestation within the catchment. Enhanced sedimentation within the lake, reported for other lakes in the Himalayan region (Jain et al, 2002;Rai et al, 2007), would modify the volume-level-area relationship employed within the lake water balance model. Assessment of these impacts would require the quantification of sedimentation rate and its spatial distribution within the lake, both of which are at present unknown.…”

Section: Discussionmentioning

confidence: 99%

Modelling the impact of prescribed global warming on runoff from headwater catchments of the Irrawaddy River and their implications for the water level regime of Loktak Lake, northeast India

Singh

Thompson

French

et al. 2010

Hydrol. Earth Syst. Sci.

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Abstract. Climate change is likely to have major implications for wetland ecosystems, which will include altered water level regimes due to modifications in local and catchment hydrology. However, substantial uncertainty exists in the precise impacts of climate change on wetlands due in part to uncertainty in GCM projections. This paper explores the impacts of climate change upon river discharge within three sub-catchments of Loktak Lake, an internationally important wetland in northeast India. This is achieved by running pattern-scaled GCM output through distributed hydrological models (developed using MIKE SHE) of each subcatchment. The impacts of climate change upon water levels within Loktak Lake are subsequently investigated using a water balance model. Two groups of climate change scenarios are investigated. Group 1 uses results from seven different GCMs for an increase in global mean temperature of 2 • C, the purported threshold of "dangerous" climate change, whilst Group 2 is based on results from the HadCM3 GCM for increases in global mean temperature between 1 • C and 6 • C. Results from the Group 1 scenarios show varying responses between the three sub-catchments. The majority of scenario-sub-catchment combinations (13 out of 21) indicate increases in discharge which vary from <1% to 42% although, in some cases, discharge decreases by as much as 20%. Six of the GCMs suggest overall increases in river flow to Loktak Lake (2-27%) whilst the other results in a modest (6%) decline. In contrast, the Group 2 scenarios lead to an almost linear increase in total river flow to Loktak Lake with

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“…Thus, the average rate of loss of capacity is computed to be 12.52 Mm The Bhagirathi River transports heavy amounts of sediment, which is detrimental to the life of the reservoir. Besides the manmade causes, natural factors also attribute to high levels of sediment transportfrom the upstream are steep topographic gradient, poor structural characteristics of soils; the existence of limestone, quartzite and slate deposits [7]. [8] have studied precipitation distribution for several Himalayan basins and found that the maximum contribution to annual rainfall (42-60%) is received during the monsoon season, whereas the minimum (5-10%) is received in the post-monsoon season.…”

Section: Experiments and Resultsmentioning

confidence: 99%

Estimation of sedimentation rate of a reservoir using remote sensing data: a case study of tehri reservoir

2016

IJLTET

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Assessment of sedimentation in Bhakra Reservoir in the western Himalayan region using remotely sensed data

Cited by 79 publications

References 5 publications

Modelling water-level options for ecosystem services and assessment of climate change: Loktak Lake, northeast India

Modelling water-level options for ecosystem services and assessment of climate change: Loktak Lake, northeast India

Modelling the impact of prescribed global warming on runoff from headwater catchments of the Irrawaddy River and their implications for the water level regime of Loktak Lake, northeast India

Estimation of sedimentation rate of a reservoir using remote sensing data: a case study of tehri reservoir

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