The Fire and Emergency Services Authority of Western Australia (FESA) and 
associated volunteers respond to a wide range of emergencies 
as well as undertaking search and rescue operations on land and 
water\footnote{http://www.fesa.wa.gov.au/internet/}. 
FESA also aims to reduce injury, loss of life and destruction of property in 
Western Australian communities through proactive measures. 
FESA helps the West Australian 
community prepare, prevent (where possible) and respond safely to disasters.
These risk mitigation activities involve understanding the relative risk
of the disaster so that resources can be directed to appropriate areas
and corresponding evacuation plans put in place.  

The key role of the Risk Research Group at Geoscience Australian 
is to develop knowledge on the risk from natural and 
human-caused hazards for input to policy and operational decision makers 
for the mitigation of risk to Australian communities. The group achieves 
this through the development of computational methods, models and decision 
support tools that assess the hazard, vulnerability and risk posed by hazards.
To develop an understanding of the tsunami risk, these
decision support tools consist of inundation
maps overlaid on aerial photography of the region 
detailing critical infrastructure as well as damage modelling estimates. 

This report describes the modelling methodology and the results
for a particular tsunami-genic event as it impacts Onslow on the North
West Shelf. This report and the decision support tool are the 
June 2006 deliverables of the Collaborative Research Agreement
between FESA and GA.