Nauru, in the central Pacific Ocean, is a raised atoll capping a volcanic seamount arising from an ocean floor depth of 4300m. The land area is 22km, and the island rises to 70m above sea level. Drilling has proved dolomitised limestone of upper Miocene or younger age to a depth of 55m below sea level. Gravity and magnetic surveys indicate that the limestone probably overlies volcanic bedrock at a depth of about 500m.
Water resources sustainable management is a vital issue for small islands where groundwater is often the only available water resource. Nauru is an isolated and uplifted limestone atoll island located in the Paciﬁc Ocean. Politecnico di Milano performed a feasibility study for the development of sustainable use of groundwater on the island. Thispaperfocusesontheﬁrstphaseof the study that concerns the conceptual site model development, the hydrogeological characterization and the 2D model implementation.
The problem of seawater intrusion in coastal aquifers and oceanic islands is not a new one and a great deal of research has been undertaken since the late 19th century. The first model was developed in 1888 and is known as the Ghyben-Herzberg. It is a simple model based on the hydrostatic balance between fresh and saline water. With the advent of large computing capacity over the past few decades, more sophisticated models have been developed for the simulation of seawater intrusion and upconing of saline water beneath a pumping well.
This policy provides a framework for Government leadership and coordinated and integrated action in the supply of safe, adequate as well as technically and environmentally sustainable water services and the promotion of appropriate sanitation services and hygiene practices to the people of the Republic of Nauru. It also provides direction for the protection, conservation, sustainable use and efficient management of Nauru’s water resources.
The report details the planning considerations including the investigation of the water supply and sewerage infrastructure needs of Nauru for the next 20 years. It is noted that Nauru has underinvested in water and sanitation infrastructure for many decades and significant capital investment will be necessary to meet both the current and future needs for the island community for the provision of safe drinking water and adequate sanitation.
Nauru faces many economic and environmental challenges. In the 1970s the country experienced an economic boom due to phosphate mining, however, because of mismanagement of the revenue, the country currently has limited financial resources to undertake many of its development programmes including environmentally sound waste management. In the face of a range of environmental, social and economic threats from poor waste management and pollution, and in the context of the limited resources, this National Solid Waste Management Strategy is developed as a matter of priority.
This document – the Republic of Nauru Framework for Climate Change Adaptation and Disaster Risk Reduction (RONAdapt) – represents the Government of Nauru’s response to the risks to sustainable development posed by climate change and disasters. It aims to do two things.
The guidelines for the design of conjunctive water supply systems to improve resilience to drought in Nauru have been developed as part of the Pacific Adaptation to Climate Change (PACC) demonstration project initiative. The PACC project involves 14 pacific countries and is aimed at building resilience to impacts of climate change in the key vulnerable socio-economic sectors. In Nauru, drought has been identified has one of the most threatening impact that could result from change in climate patterns.
Based on literature review and meetings with community residents, acute health effects from ambient particulates on airway, mucosa, and skin of residents, especially neonates and infants, are strongly suspected. Previous studies on environmental impacts of phosphate mining also indicate a potential contamination with radionuclide including radon and radon progeny and effects on cancer developments including lung cancer, leukemia. In addition to these, cadmium contamination of air, water, and biota should also be included as a potential threat to Aiwo community and nearby districts.
The Nauru Sustainable Land Management (SLM) Project was started with funding from UNDP-GEF in 2008, with the goal of building Nauru’s capacity to implement a comprehensive regime for sustainable land management and to ensure that SLM is mainstreamed into all levels of decision-making. One of the outputs of the project is the development of a National Action Programme (NAP) and an Integrated Financial Strategy (IFS) to address land degradation and mitigate the effects of drought.