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 4: Responding to Shifting Water Resources : New approach for estimating the environmental risk of a river basin
New approach for estimating the environmental risk of a river basin
Author : K. Latu1,2, J. Costelloe1 and H.M. Malano1
The conventional approach to estimating environmental risk in a river basin does not consider the entire flow regime or all the environmental assets within a river system. Instead, previous studies have mainly focused on selected ecological indicators, such as habitat rating for a limited range of flows across the flow regime (e.g. low flow). Such an approach is limited because it represents environmental risk only with ecological risk, which does not totally account for the consequences to other environmental assets that may occur when environmental flow demand is unsatisfied. Furthermore, the cumulative effects of environmental risk over the past years are often ignored. Therefore, what is the best method for estimating environmental risk? We proposed a holistic, dynamic and more robust approach called environmental risk model, which is based on a statistical analysis of the entire flow regime that accounts for flow stress indicators to produce an environmental risk profile based on both frequency and consequence of occurrence of a given flow range.
File Size : 1,120,011 bytes
File Type : Adobe Acrobat Document
Chapter : IAHR World Congress Proceedings
Category : 34th Congress - Brisbane (2011)
Article : THEME 4: Responding to Shifting Water Resources
Date Published : 01/07/2011
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