The Influence of Flooding Risk on Infrastructure Development in Western Sydney

Alan Jeary, Ian Jeary


Abstract

Data relating to flood events in the west Sydney area of Windsor, have been re-analysed using extreme value statistics, and the analysis has shown that the risk of occurrence of the probable maximum flood is greater than previously assumed using conventional statistical methods.The response of the New South Wales Government to the perceived risk is discussed and the efficacy of their strategy of relying on passing information to local residents has been tested by the use of a survey of residents of the area.The survey of Windsor residents showed that a significant percentage of the population had no knowledge of the flood risk. Of the rest of the population there was little or no knowledge of the effects that a severe flood might have, and there was little appreciation of the yearly risk of floods that would affect the town. Overall, it was concluded that the main mitigation strategy of government has been ineffective.

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References

L.R. Johnston Associates, 1992: Floodplain Management in the United States: An assessment report. Contract No. TV-72105A for the Interagency Floodplain Management Taskforce.

Hawkesbury-Nepean Flood Management Committee, 1997: Achieving a Hawkesbury-Nepean Floodplain Management Strategy. ISBN 0 7313 0342 3 null

3 Lieblein J., 1974: Efficient Methods of Extreme Value Methodology. National Bureau of Standards, Washington. Technical Analysis Division. NBSIR 74-602."

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