UNDP Support in Pacific SIDS

Project Overview

Small Island developing States (SIDS) in the Pacific are particularly exposed to the climate change related risks since the majority of their population, agricultural land and infrastructure are concentrated in the coastal zone. Pacific SIDS are also unique since their dense and rapidly growing population and low-lying deltaic spatial locations render the region highly susceptible to only a small degree of change in climate conditions.

The likely prospect of land loss, salinization, and droughts due to climate change will threaten the sustainability of agriculture in Pacific countries. The sea surface temperatures causes coral bleaching which affects artisanal fisheries and reduces storm surge protection. Also, the biodiversity of upland and coastal forests, including mangroves, is threatened by both global change and local factors. Low rainfall can lead to a reduction in the amount of water that can be physically harvested, a reduction in river flow, and a slower rate of recharge of the freshwater lens, which can result in prolonged droughts. Finally, impacts on infrastructure due to extreme climate events would become increasingly destructive. 

Learn more about UNDP's Support to Small Island Developing States.

Source: UNFCCC, Vulnerability and Adaptation to Climate Change in Small Island Developing States - Background paper for the expert meeting on adaptation for Small Island Developing States; and Global Climate Change Alliance, http://www.gcca.eu/regional-programmes/gcca-pacific-small-island-states. 

Project Details

The Pacific Adaptation to Climate Change (PACC) project is the largest climate change adaptation initiative in the Pacific region, with demonstration projects in 14 Pacific island countries.

The PACC project is funded by the Global Environment Facility's Special Climate Change Fund (SCCF) – a fund that was established to support adaptation and technology transfer in all developing country parties to the UNFCCC. Additional funding has been provided by the Australian Government to support the replication of successful demo adaptation interventions in a broader range of vulnerable communities. Project execution is supported by Secretariat of the Pacific Regional Environment Programme.

Level of Intervention: 
Implementing Agencies & Partnering Organizations: 
United Nations Development Programme (UNDP)
Global Environment Facility (GEF)
Australian Government
Project Status: 
Under Implementation

Country Initiatives

Pacific Adaptation to Climate Change (PACC)

PACC Cook Islands

Strengthening the design and implementation of the Mangaia Harbor and managing the island’s entire coastline. In the Cook Islands, the PACC project focuses on coastal management on Mangaia Island, especially on climate proofing its harbour.


Improving crop resilience and drainage systems in lowland farming areas in the Tailevu-Rewa and Serua-Namosi Province. In Fiji, PACC actions focus on food production and water management with emphasis on addressing the impacts of climate change on these islands’ crops and drainage systems.

PACC Nauru

Adapting water resource management to increase climate-resiliency and protect against future climate change risks. In Nauru—a small isolated island developing state situated in the Pacific region—the PACC project specifically aims to increase, diversify and better manage the island nation’s water supply.


Improving Niue’s Water Resource Management. For PACC Niue, the objective is to improve household rainwater harvesting to reduce water supply shortages and provide every household on Niue with a water catchment system.


Design underground irrigation systems to help PNG adapt to current and future drought. In Papua New Guinea (PNG), a small island nation located in the south-western Pacific Ocean, the PACC project focuses on enhancing food production and food security, particularly to overcome the effects of drought.

PACC Samoa

Integrating coastal community defense and erosion control under climate risk considerations. In Samoa, the PACC project aims to enhance the adaptive capacity of coastal communities, their socio-economic activities and the infrastructure they rely on. By integrating climate risks considerations into coastal community defense and erosion control, PACC Samoa will increase the resilience of its coastal communities and infrastructure to the impacts of climate change.


Improving the ability of isolated low-lying island communities to address food production and food security issues induced by climate change. In the Solomon Islands, a country made up of hundreds of coral atolls and small volcanic islands stretching approximately 1,600 km across the Pacific Ocean, the PACC SI project is focusing on enhancing food production and increasing food security.

PACC Tokelau

Integrated coastal community defense and erosion control, and a safe and abundant water supply in view of climate change risks. In Tokelau the PACC project is working to address coastal zone management and introduce climate-resilience to the water supply.

PACC Tonga

Improving the current Hihifo water infrastructure to address current and future water problems that would be worsened by climate change. Based on Tonga’s needs, the PACC Tonga project is focused on improving water resource management. PACC Tonga is using climate change models, technical expertise and traditional knowledge to identify, evaluate, design and demonstrate appropriate adaptation actions that will enhance the current Hihifo water infrastructure and improve the livelihoods of the people by providing them with clean potable water.

PACC Tuvalu

Climate proofing water management plans for Lofeagai Community. In Tuvalu the PACC project focuses on water resource management and supports the improvement of water infrastructure to enable people to better cope with current and anticipated climatic changes.

PACC Vanuatu

Demonstrating the integration of climate change risk reduction in road design in Epi, Shefa Province. The PACC Vanuatu project is working with the Government of Vanuatu and key stakeholders in Epi to develop capacity to design and implement improved roading infrastructure in order to increase resilience to climate change-related risks.