Establishing stage-discharge relationships in multiple-channelled, ephemeral rivers: a case study of the Diamantina River, Australia

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Title Establishing stage-discharge relationships in multiple-channelled, ephemeral rivers: a case study of the Diamantina River, Australia
Author Bullard, Joanna E.; McTainsh, Grant Harvey; Martin, Paul
Journal Name Geographical Research
Editor Arthur Conacher, George Curry, Roy Jones
Year Published 2007
Place of publication United Kingdom
Publisher Wiley-Blackwell Publishing
Abstract The method for deriving a stage-discharge relationship has a significant impact on the shape of the river's rating curve. We compare rating curves for a single gauging station on a mutiple-channelled river in Australia compiled using three different methods – the Urban Runoff and Basin Systems (URBS) rainfall-runoff model, an empirically-based velocity-area method, and the predictive Hydrologic Engineering Centre-River Analysis System (HEC-RAS) computer model. The rainfall-runoff model was found to predict lower discharges for stage heights over 3.5 m than both the empirically-based velocity-area method and the HEC-RAS model. The empirically-based velocity-area model predicts similar discharges to the rainfall-runoff model for stage heights less than 3 m but much higher discharges for larger flood events. The HEC-RAS model predicts higher discharges than both other rating curves at all stage heights probably due to under-estimation of the impact of surface roughness on flow velocity. The three models are discussed with particular reference to their use on multiple-channelled rivers.
Peer Reviewed Yes
Published Yes
Publisher URI http://www3.interscience.wiley.com/journal/119815348/grouphome/home.html
Alternative URI http://dx.doi.org/10.1111/j.1745-5871.2007.00457.x
Volume 45
Issue Number 3
Page from 233
Page to 245
ISSN 1745-5871
Date Accessioned 2008-05-12
Date Available 2009-10-01T05:58:06Z
Language en_AU
Research Centre Atmospheric Environment Research Centre
Faculty Faculty of Science, Environment, Engineering and Technology
Subject PRE2009-Hydrology
URI http://hdl.handle.net/10072/18820
Publication Type Journal Articles (Refereed Article)
Publication Type Code c1

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