The ASTER Global Digital Elevation Model (GDEM) Version 3 (ASTGTM) provides a global digital elevation model (DEM) of land areas on Earth at a spatial resolution of 1 arc second (approximately 30 meter horizontal posting at the equator).
The development of the ASTER GDEM data products is a collaborative effort between National Aeronautics and Space Administration (NASA) and Japan’s Ministry of Economy, Trade, and Industry (METI). The ASTER GDEM data products are created by the Sensor Information Laboratory Corporation (SILC) in Tokyo.
A presentation on the challenges and opportunities of groundwater governance in Tonga by the Ministry of Lands and Natural Resources at the Groundwater Governance: A Global Framework for Action Regional Consultation for Asia and the Pacific Region that was held in China.
This report is seen as a vehicle for catalyzing common knowledge and understanding among government, donors, NGOs, and communities on rainwater harvesting in the outer island regions of Tonga.
This report from 1992 (one of a series of reports from the Tonga Water Supply Master Plan Study) presents the findings of a recent water resources study of the islands in the Kingdom of Tonga. It summarises previous work, documents recent and current investigations and recommends further investigations to gain a better understanding of the water resources. It also outlines details of a proposed national monitoring and protection programme and makes recommendations about legislation for water resource management and protection.
This report is one in a six series produced for the Tonga Water Safety Plan programme
For the Ninth Pacific Islands Conference on Nature Conservation and Protected Areas December 2013, Secretariat of the Pacific Regional Environment Programme (SPREP) commissioned an assessment of the status of biodiversity and conservation in Oceania. This report assesses the overall state of conservation in Tonga using 16 indicators.
*this report wasn't published but was sent to country for checking (2013)* - to be used for the Regional SOE initiative 2019
This report provides design details and costs for the proposed long-term improvements to the water supply
system at Hihifo on the island of Tongatapu, Kingdom of Tonga. This report was part of the demonstration project under the Pacific Adaptation to Climate Change (PACC) programme