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 : Interpreting the ability to meet daily environmental flow recommendations from monthly water resourc...
Interpreting the ability to meet daily environmental flow recommendations from monthly water resource models
Author : B.P.Neal1 , S.Lang1 and S.Treadwell1
Environmental flow recommendations are typically specified on a daily time step, whereas some water resource models used to support water management and planning operate on a monthly time step. This paper assesses the ability to reliably determine whether daily environmental flow recommendations are being met using only monthly streamflow data. A case study is presented from southern Victoria, Australia. The outcome from this case study was that short duration cease to flow events and low flow freshes were difficult to reliably assess using monthly data, but minimum baseflows, high flow freshes, bankfull and overbank flows could be more reliably assessed. Where there was a difference between the assessments on daily and monthly time steps for freshes, the assessment on a monthly time step almost always overestimated the proportion of months that the given event was actually being delivered. The outcomes of this paper will help ecologists to interpret monthly water resource model output in the period until those models are converted to a daily time step in the future.
File Size : 179,919 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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