Risk-based Assessment Of Climate Change
Impact On Storm Drainage System
Author(s)
Z. Alsaqqaf, H. Zhang & S. Mohamed
Abstract
Climate change impacts on engineering infrastructures are increasing. The
infrastructures are expected to withstand more frequent and severe weather
events, more climate variability, and changes in climate norms (average
conditions). It is anticipated that many civil infrastructure systems such as storm
drainage, will fail to meet the expected environmental pressures. Therefore, it is
important to identify current and future risks; to develop strategies for adapting
such risks; and to implement an effective maintenance plan. In the study, the
climate change impacts on storm drainage were investigated, particularly in
Southport, Queensland, Australia. The historical rainfall data for 120 years were
analysed to identify the changes in the trends, patterns and frequencies of
rainfall. The peak flow in a flooding event was identified. The investigation
provides essential information for the vulnerability to risk failure of the existing
storm drainage system, such as at a critical pipe failure point. Finally, the
research applied a risk-based vulnerability assessment by risk analysis and
management quantification tools to quantify the impact that rainfall may induce
through storm drainage failure.
Keywords: storm drainage, climate change, risk assessment, event tree analysis.
1 Introduction
Due to increased and more intense Climate Change (CC), engineering structures
are increasingly forced to withstand more frequent and extreme weather events,
more climate variability, and changes in climate norms (average conditions).
Numerous changes have already occurred, such as the increase in the global
mean temperature and the sea level rise. These changes, projected to worsen
over time, will impact on civil infrastructure systems, such as storm drainage, in
Keywords
storm drainage, climate change, risk assessment, event tree analysis
Related Book
Other papers in this volume
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