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 : 33rd Congress - Vancouver (2009) : Topic B: Water Engineering in Support of Built Environments : Flood design criteria for kárahnjúkar dam – a glacially dominated watershed
Flood design criteria for kárahnjúkar dam – a glacially dominated watershed
Author : G.G. Tomasson, S.M. Gardarsson, Th.S. Leifsson and B. Stefansson
The Hálslón reservoir is the main water storage for the Kárahnjúkar hydroelectric powerplant in eastern Iceland. Of the 1800 km2 reservoir drainage basin, 1400 km2 are covered by glacier, making discharge and consequently floods into the reservoir dominated by characteristics of the glacial discharge. The paper discusses the flood design criteria applied for the reservoir. Three flood events were identified; a design flood corresponding to a glacial melt event, a safety check flood (probable maximum flood (PMF)) corresponding to a probable maximum precipitation, and a catastrophic flood corresponding to a volcanic eruption under the glacier within the drainage basin. Hydraulic structures designed to pass the floods through the reservoir are described briefly, a spillway at the Kárahnjúkar dam, designed to pass the design flood and the PMF flood, and a fuse plug at the Desjarárstífla dam, designed to erode and pass the catastrophic flood.
File Size : 1,330,519 bytes
File Type : Adobe Acrobat Document
Chapter : IAHR World Congress Proceedings
Category : 33rd Congress - Vancouver (2009)
Article : Topic B: Water Engineering in Support of Built Environments
Date Published : 09/08/2009
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