Regional Flood Frequency for Queensland Using the Quantile Regression Technique
| Autor: | LB Palmen, G Kuczera, WD Weeks |
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| Rok vydání: | 2011 |
| Předmět: | |
| Zdroj: | Australasian Journal of Water Resources. 15:47-57 |
| ISSN: | 2204-227X 1324-1583 |
| Popis: | Design flood estimation for small- and medium-sized catchments is a frequent requirement for a wide range of projects. While each individual project in this category is likely to be relatively small, the total value of projects that rely on design floods for the design is very high. The currently adopted approaches for Queensland are published in Australian Rainfall and Runoff. Several approaches are described, though the Main Roads Rational Method (MRRM) is predominant in practice. This method has been used throughout Queensland for many years, but the basis of the method is not considered reliable because of the lack of recorded data used in the development and the lack of independent testing. The development of the new procedure described in this paper has used all suitable streamflow data available for the state. It therefore has a better foundation and the results can be accepted with more confidence. The approach presented uses the quantile regression technique to develop a procedure for calculating design floods for ungauged catchments that relates the design flood discharges to readily available catchment characteristics. The method is then tested against the currently available MRRM. This paper provides an input to part of the upgrade of Australian Rainfall and Runoff, currently underway. |
| Databáze: | OpenAIRE |
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