IAHR, founded in 1935, is a worldwide independent member-based organisation of engineers and water specialists working in fields related to the hydro-environmental sciences and their practical application. Activities range from river and maritime hydraulics to water resources development and eco-hydraulics, through to ice engineering, hydroinformatics, and hydraulic machinery.
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You are here : eLibrary : IAHR World Congress Proceedings : 36th Congress - The Hague (2015) ALL CONTENT : Hydro-environment : Investigation of hydropeaking impacts on river ecology following the swiss guidelines experiences ...
Investigation of hydropeaking impacts on river ecology following the swiss guidelines experiences and insights
Author : MATTHIAS SCHNEIDER(1), IANA KOPECKI(1) & JEFFREY. A. TUHTAN(1) & ANDREAS ZURWERRA(2)
Hydropeaking is one of the major impacts on river ecology in the alpine region. It occurs most frequently downstream of storage hydropower plants due to operation scheduling which follows demand-driven and peak energy production.
During periods with high energy demand the water stored in a reservoir is discharged through the turbines, and during periods of low energy demand flow is reduced a much lower level. This results in rapid diurnal fluctuations where the intense changes in hydropower discharge causes high temporal and spatial variability in the hydrodynamic conditions experienced by fish. In 2012 Switzerland issued a new set of guidelines which define indicators for the assessment of hydropeaking impacts on fish (Baumann et al., 2012). Specifically, the stranding of young fish and the deterioration of spawning grounds are addressed. The methodology has been applied within a catchment in southern Switzerland. In this work several reaches with different morphological characteristics have been selected and different scenarios of hydropeaking operation have been studied and compared.
File Size : 744,609 bytes
File Type : Adobe Acrobat Document
Chapter : IAHR World Congress Proceedings
Category : 36th Congress - The Hague (2015) ALL CONTENT
Article : Hydro-environment
Date Published : 30/09/2015
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