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 : 34th Congress - Brisbane (2011) : THEME 5: Environmental Hydraulics and Hydrology : Visual effects of waterfalls affected by water diversion
Visual effects of waterfalls affected by water diversion
Author : R.M. Boes1, P.H. Hiller2, . Killingtveit3
When considering the renewal of a hydropower or other water withdrawal concession, the general benefits of the scheme have to be weighed against its ecological disadvantages. Loss of water from a scenic waterfall will often be considered as a considerable drawback. Also, if granting concession, the licensing authority will limit the minimum release discharge, which may have a considerable impact on project economy. The visual impact of reducing the discharge in a waterfall is significant for the feasibility of hydropower or irrigation projects, but currently no generally accepted guidelines for quantifying the relationship between discharge and visual appearance exist. There is thus a need for a methodology to determine the minimum residual flow of waterfalls. Based on results from a case study covering seven waterfalls in Norway and Austria, such a methodology is presented accounting for the visual effects of flow changes at waterfalls. A guideline for stepwise residual flow determination at waterfalls is given.
File Size : 3,148,968 bytes
File Type : Adobe Acrobat Document
Chapter : IAHR World Congress Proceedings
Category : 34th Congress - Brisbane (2011)
Article : THEME 5: Environmental Hydraulics and Hydrology
Date Published : 01/07/2011
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