Uncertainty Of Gauged Data And Its Impact On The Prediction Of Design Flood Flows

Ball, JE

Uncertainty Of Gauged Data And Its Impact On The Prediction Of Design Flood Flows

Ball, JE

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Publication Type:: Conference Proceeding
Citation:: 2016
Issue Date:: 2016-08-28

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Field	Value	Language
dc.contributor.author	Ball, JE https://orcid.org/0000-0001-8342-1916	en_US
dc.date	2016-08-28	en_US
dc.date.issued	2016-08-28	en_US
dc.identifier.citation	2016	en_US
dc.identifier.uri	http://hdl.handle.net/10453/103142
dc.description.abstract	Design flood estimation remains a problem for many professionals involved in the management of rural and urban catchments. An essential aspect of this problem is prediction of the magnitude of the hazard and the exceedance probability of the hazard from suitable data. This suitable data can be obtained from either monitoring of the floods in the catchment or from catchment modelling aimed at replicating floods that would have been monitored were monitoring systems in place. If the suitable data is obtained from monitored data, then the predictions are obtained from a frequency analysis of the monitored data. If the suitable data is generated by catchment modelling, then monitored data is needed to ensure application of the catchment modelling system results in flood predictions that are suitable replications of the data that could have been recorded at the site of interest. In both cases, there is a need to ensure the reliability of the gauged data in terms of flood flows. A typical gauging station, however, monitors river stages and requires a stage-discharge relationship to convert the recorded levels to an equivalent flow. For design flood systems, extrapolation of the stage-discharge usually is required. There is a need to consider the impact of this extrapolation of the stage-discharge on the predicted flood. Presented herein will be the results of an investigation into stage-discharge relationships and design flood estimation.	en_US
dc.relation.ispartof	20th Congress of the Asia Pacific Division of the International Association for Hydro Environment Engineering & Research (IAHR APD 2016)	en_US
dc.title	Uncertainty Of Gauged Data And Its Impact On The Prediction Of Design Flood Flows	en_US
dc.type	Conference Proceeding
utslib.location.activity	Colombo, Sri Lanka	en_US
utslib.for	040608 Surfacewater Hydrology	en_US
utslib.for	090509 Water Resources Engineering	en_US
pubs.embargo.period	Not known	en_US
pubs.organisational-group	/University of Technology Sydney
pubs.organisational-group	/University of Technology Sydney/Faculty of Engineering and Information Technology
pubs.organisational-group	/University of Technology Sydney/Faculty of Engineering and Information Technology/School of Civil and Environmental Engineering
pubs.organisational-group	/University of Technology Sydney/Strength - CTWW - Centre for Technology in Water and Wastewater Treatment
utslib.copyright.status	closed_access
pubs.consider-herdc	false	en_US
pubs.finish-date	2016-08-31	en_US
pubs.start-date	2016-08-28	en_US

Abstract:

Design flood estimation remains a problem for many professionals involved in the management of rural and urban catchments. An essential aspect of this problem is prediction of the magnitude of the hazard and the exceedance probability of the hazard from suitable data. This suitable data can be obtained from either monitoring of the floods in the catchment or from catchment modelling aimed at replicating floods that would have been monitored were monitoring systems in place. If the suitable data is obtained from monitored data, then the predictions are obtained from a frequency analysis of the monitored data. If the suitable data is generated by catchment modelling, then monitored data is needed to ensure application of the catchment modelling system results in flood predictions that are suitable replications of the data that could have been recorded at the site of interest. In both cases, there is a need to ensure the reliability of the gauged data in terms of flood flows. A typical gauging station, however, monitors river stages and requires a stage-discharge relationship to convert the recorded levels to an equivalent flow. For design flood systems, extrapolation of the stage-discharge usually is required. There is a need to consider the impact of this extrapolation of the stage-discharge on the predicted flood. Presented herein will be the results of an investigation into stage-discharge relationships and design flood estimation.

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http://hdl.handle.net/10453/103142