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.
Log On
About IAHRDirectoryCommitteesMy IAHRNews & JournalseLibraryeShopEventsJoin IAHRWorld CongressDonate
spacer.gif eLibrary
spacer.gif eLibrary
You are here : eLibrary : IAHR World Congress Proceedings : 34th Congress - Brisbane (2011) : THEME 1: Extremes and Variability : Reconciliation between flood frequency analysis and rainfall- runoff model results
Reconciliation between flood frequency analysis and rainfall- runoff model results
Author :
This study investigates the effectiveness of flood frequency analysis as a tool for verification of hydrological models. The study methodology is based on a case study at seven catchments on the Gold Coast, Australia. The study contributes to the body of knowledge by highlighting a number of pitfalls that hinder achieving reconciliation between flood frequency and hydrological modelling results. These pitfalls appear to be mainly associated with uncertain data. Rainfall maps that are used as input in hydrological modelling can be an important source of discrepancy, if they are not up-to-date and adequately filtered with respect to sub duration inconsistencies. Inaccuracy of rating curves at measurement stations, inappropriate initial and continuous loss parameters; inaccurate Areal Reduction Factor and disregarding non-linear response of catchments are other contributing factors. A mismatch between the length of data set that is used for the generation of rainfall maps and the length of the data set that is used for flood frequency analysis can also be a reason for discrepancy between model outputs and flood frequency analysis results.
File Size : 290,853 bytes
File Type : Adobe Acrobat Document
Chapter : IAHR World Congress Proceedings
Category : 34th Congress - Brisbane (2011)
Article : THEME 1: Extremes and Variability
Date Published : 07/08/2012
Download Now