Disaggregating the Effects of Climatic Variability and Dam Construction on River Flow Regime

Shakarami, Leila; Ashofteh, Parisa‐Sadat; Singh, Vijay P.

doi:10.1007/s11269-022-03235-9

Cited by 12 publications

(7 citation statements)

References 28 publications

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“…Construction of a reservoir results in regulated flow, thereby lowering unregulated high peaks and promoting the formation of habitats for wildlife and plant growth. Proposed upstream areas can exhibit a natural water flow and support riparian plant communities; nevertheless, the dam flow regulation alters vegetation communities and animal habitats downstream (Shakarami et al, 2022). The vegetation will be cleared to create a reservoir during the dam's construction, but it is expected to regrow, particularly along the periphery once the dam is operational.…”

Section: Resultsmentioning

confidence: 99%

“…Reduced flow transports fewer food resources to fish populations downstream (Rafiq, 2002). Minimal sunlight penetrating deeper levels makes it difficult for aquatic flora to sustain the grazing fish population (Shakarami et al, 2022). According to Tonra et al (2016), dippers living beneath the dams had a greater annual survival rate than their upstream counterparts because they had access to marine nutrients and salmon.…”

Section: Resultsmentioning

confidence: 99%

“…The 281 m dam would flood low‐lying areas, altering the path of the Indus River, which normally follows a V‐shaped valley and becomes slightly wider in open areas. Changing the downstream composition of vegetation can have negative effects on water quality and aquatic communities (Shakarami et al, 2022). Changes to the flow regime of the river Indus following the construction of a reservoir would have serious consequences for the fish species.…”

Section: Resultsmentioning

confidence: 99%

Section: Identification Of Potential Impactsmentioning

confidence: 99%

“…Evaluating the state of such ecosystems in terms of their function and structure, also known as ecological integrity or ecosystem health, has become essential for addressing the vast array of benefits and services they provide to communities, thereby enabling the design of conservation and restoration measures to address critical impacts and threats (Tickner et al, 2020). Studies of hydropower projects typically fail to account for or ignore long‐term ecological changes in riverine vegetation and the freshwater ecosystem, despite the fact that such assessments are a precondition for any restoration or mitigation measures that can achieve conservation aims (Shakarami et al, 2022).…”

Section: Introductionmentioning

confidence: 99%

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Ecological impact assessment of dam construction: A case study of Diamer Basha Dam Gilgit‐Baltistan, Pakistan

Shahab

Bohnett

Ahmad

et al. 2023

River Research & Apps

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Dam construction poses significant ecological impact, both during the initial construction phase and long after the dam is completed. The Diamer Basha Dam, situated on the River Indus in the Gilgit‐Baltistan district of Pakistan, is receiving significant attention due to the ecological consequences of the proposed and ongoing construction. The Dam is a 272‐m‐tall reservoir with a 9867.912 Mm3 (million cubic meter) capacity and will be the world's highest roller compact concrete dam. The assessment of local ecological impacts was compiled in a checklist and matrices format to discuss the impacts on the status of species diversity in the study area. Using a random sample methodology, line transects, and quadrats were employed to evaluate phytosociological properties of vegetation. The floral parameters recorded were percent cover, species richness, vegetation composition, frequency, and density. The ecological analysis included principal component analysis to compare the distributions of sustained and lost vegetation in response to water flow variables. This research showed that several plant species withstand periods of high peak flow, like Salix tetrasperma, Rumex dentatis, Trifolium resupinatum, and Polygonum. Additionally, visual observations, plot surveys, transects, and published reports were used to compile the faunal data used to determine habitat distribution. According to the analysis, immediate effects of dam construction activities such as blasting, quarrying, and traffic noise cause severe disturbances to existing biodiversity and habitats with high ecological vulnerability, and have long‐term effects on ecological integrity and environmental health in downstream and upstream habitats. The study presents the present status of biological and ecological conditions, as a baseline reference datum for a comparative analysis of the changes caused by the dam's construction.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: Identification Of Potential Impactsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Ecological impact assessment of dam construction: A case study of Diamer Basha Dam Gilgit‐Baltistan, Pakistan

Shahab

Bohnett

Ahmad

et al. 2023

River Research & Apps

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Flood Attenuation Potential of Italian Dams: Sensitivity on Geomorphic and Climatological Factors

Evangelista,

Ganora,

Mazzoglio

et al. 2023

Water Resour Manage

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In this work the attenuation potential of flood peaks of 265 large reservoirs all over Italy is analysed, considering a flood management that excludes gates opening and then configures strictly unsupervised attenuation effects. Key factors of dams and related basins are considered to develop a ranking method that can emphasize the interplay between dam geometry and the hydrological processes acting in the upstream watershed. To maintain a homogeneous approach in such a wide geographic area, the attenuation index is computed applying the numerical solution of the differential equation of lakes and only two different standardized hydrograph shapes have been used. An index design flood from the rational method is used as the incoming peak value for each dam, enhancing the use of the results of a recent analysis of all Italian rainfall extremes. Even with a very simple approach, twenty-four different design incoming floods are derived, by varying the shape of the incoming hydrograph and the parameters of the rational method. Exploring the ranking results in all the alternatives, the attenuation potential obtained for all dams demonstrates to be strongly sensitive to the assumptions on the time of concentration and to some rainfall features. On the other hand, the hydrograph shape seems to exert much less influence on the ranking outcome. Results obtained can be useful to studies of wide-area flood frequency analyses, as we highlighted the sensitivity of the rank of attenuation efficiency to hydrologic parameters widely used in the assessment of the design flood peaks in ungauged basins.

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Vulnerability and resilience of hydropower generation under climate change scenarios: Haditha dam reservoir case study

Tayyeh,

Mohammed

2024

Applied Energy

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Disaggregating the Effects of Climatic Variability and Dam Construction on River Flow Regime

Cited by 12 publications

References 28 publications

Ecological impact assessment of dam construction: A case study of Diamer Basha Dam Gilgit‐Baltistan, Pakistan

Ecological impact assessment of dam construction: A case study of Diamer Basha Dam Gilgit‐Baltistan, Pakistan

Flood Attenuation Potential of Italian Dams: Sensitivity on Geomorphic and Climatological Factors

Vulnerability and resilience of hydropower generation under climate change scenarios: Haditha dam reservoir case study

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