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As part of the Australian Government's International Climate Change Adaptation Initiative (ICCAI), the Pacific Adaptation Strategies Assistance Program (PASAP) and its successor, the Pacific-Australia Climate Change Science and Adaptation Planning (PACCSAP) program, aim to strengthen partner country capacity to assess vulnerability to climate change and develop robust adaptation strategies. Discussions during 2010 between the Australian Government Department of Cliamte Change and Energy Efficiency (DCCEE) and Tonga's Ministry of Environment and Climate Change (MECC) highlighted the potential for supporting Action 2.1 of Tonga's Joint National Action Plan on Climate Change Adaptation and Disaster Risk Management 2012-2015 (JNAP). Action 2.1 specifies the need for high resolution imagery was also captured with the LiDAR. The surveys were completed in Octorber 2011 and the data was processed to produce high resolution digital elevation models (DEMS) and other derived products. Phase one also assessed institutional technical capability whithin the Government of Tonga to receive and use the elevation data, and scoped capacity building requirements to sustainably use the data for coastal inundation modelling and risk assessment.