Heard Island and McDonald Islands (Aus.)

In the area you have selected (Heard Island and McDonald Islands (Aus.)) coastal flood hazard is classified as very low according to the information that is currently available. This means that there is less than a 10% chance of potentially-damaging waves occurring in the next 10 years. Based on this information, the impact of coastal flood need not be considered in different phases of the project, in particular during design and construction. Further detailed information should be obtained to adequately account for the level of hazard. Although the hazard is considered to be very low or non-existent in the project location based on the information available in ThinkHazard!, additional information may show some level of hazard. If local or additional information sources suggest that there is coastal flood hazard, follow the recommendations below and seek expert guidance on additional recommended actions.


  • INTERACTING HAZARDS: Project planning, design, and construction practices should account for coastal flood and storm surge from cyclones and other weather events occurring in your project area. More information
  • EMERGENCY RESPONSE PLANS: Identify the regional and national government’s emergency response policy and protocols to coastal flooding in your project area and incorporate as necessary. More information
  • TECHNICAL EXPERTISE: Consult with an expert familiar with coastal flooding risk that has experience with natural hazards and/or construction practices in your local area. Such consulting professionals include structural engineers, civil engineers, and atmospheric scientists. Incorporate local and subject-matter expertise in the design, construction, and maintenance phases of your project. More information
  • INSURANCE: For coastal flooding risks that cannot be mitigated, consider insurance products specifically aimed at alleviating the financial costs associated with flooding. More information
  • CRITICAL INFRASTRUCTURE: If the project involves the development of critical infrastructure (e.g., a hospital, fire station, or power transmission line), or will support critical infrastructure, you should consider how your project can be affected by coastal flooding that occurs outside of the specific project location. More information
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