Vaitupu Coastal Adaptation Project (VCAP)

Project objective: To reduce climate-induced storm-wave and coastal flooding risks on Vaitupu and enhance biodiversity by implementing sustainable adaptation investments, including hybrid nature-based solutions.

VCAP's outcomes are designed to endure in the face of uncertain future conditions (including changing wave climates and extreme event patterns) through: i) robust option appraisal and designs that incorporate future scenarios; ii) phased implementation and contingency planning; iii) community stewardship and O&M systems; and iv) monitoring and learning loops that support adaptive management and course correction over time.

Target sites: Several high-risk sites have been identified along the south-western lagoon-front stretch between the Tolise Primary School and the health clinic, along with the secondary school on the eastern shores and the agricultural station near Elisefou. These areas host essential infrastructure—including schools, the Kaupule office, the health clinic, and residential housing—that are already exposed to coastal erosion and king tide inundation.

Project justification: The VCAP project is positioned to address the “missing middle” between reactive measures and long-term resilience by supporting feasibility and detailed design, enabling inclusive and locally grounded prioritisation through the Kaupule and community structures, and facilitating sequenced implementation with embedded operation, maintenance, and learning systems to ensure sustained impact. It addresses the principal barriers that prevent transformational adaptation on Vaitupu, providing the incremental resources and structured approach required to:
•    Translate risk information into implementable investment packages. The project supports the generation and use of hazard and inundation evidence to identify feasible options and develop procurement-ready designs and specifications. This reduces the risk of under-designed works, repeated rework, and maladaptation.
•    Enable transparent and inclusive prioritization and sequencing. VCAP convenes national and island-level stakeholders to validate risks, agree priorities and trade-offs, and confirm sequencing; anchored in Kaupule legitimacy and inclusive participation ensuring that women, youth, and persons with disabilities have meaningful influence over site prioritisation, design considerations, and stewardship arrangements. This increases ownership and the durability of decisions.
•    Deliver a hybrid portfolio that reflects atoll realities. The project supports an approach that integrates bioengineered measures where needed with NbS elements—such as mangrove rehabilitation/restoration and dune/coastal vegetation stabilization (including bioengineering and vegetated buffers) where feasible and cost-effective. Hybrid measures can strengthen shoreline stability and generate ecosystem co-benefits while managing maintenance burdens.
•    Strengthen O&M readiness and long-term sustainability. VCAP explicitly invests in maintenance capacity: training, stewardship arrangements, and practical O&M systems that clarify roles and provide routines, tools and monitoring. This is essential to ensure that adaptation benefits endure beyond construction or initial establishment of NbS interventions.
•    Generate globally relevant learning on atoll adaptation. The project will document costs, performance, and limits of adaptation measures in an extremely vulnerable atoll setting, generating transferable knowledge relevant to other atoll SIDS and low-lying coasts. This learning function strengthens the global environmental value of the project by improving future investment choices and reducing the risk of maladaptation.

This approach provides a balanced response to the underlying system drivers of vulnerability, targeting the most urgent and disruptive risks (wave-driven flooding and erosion affecting people, infrastructure and access routes) while building the enabling conditions — evidence, legitimacy, sequencing and O&M — required for durable adaptation. Alternatives such as isolated small shoreline repairs or short-term planting initiatives are unlikely to yield sustained risk reduction, while large-scale engineered programmes are planned for a future second stage.

Component 1: Capacity development for hybrid nature-based solutions

Outcome 1:  Strengthened local capacity to prioritise, develop, implement and sustain hybrid coastal protection measures and biodiversity-rich ecosystems

Output 1.1.1. Inclusive, island-wide consultations to strengthen understanding of coastal hazards and biodiversity loss, and enable informed community-driven decision making.

Output 1.1.2. Enhanced Island Strategic Plan for Vaitupu integrating improved coastal resilience and biodiversity-integrated planning, prioritization, and management of coastal protection adaptation measures.

Output 1.1.3. Training programme on hybrid coastal design principles and integrated coastal management.

Output 1.1.4. Standard operating procedures (SOPs) for design, implementation, monitoring, and post-storm rehabilitation of biodiversity-friendly hybrid systems.

Component 2: Enhanced ecosystem services and hybrid coastal protection measures

Outcome 2: Reduced exposure of priority coastal areas and enhanced biodiversity through rehabilitated coastal ecosystem services and improved shoreline stability in priority segments

Output 2.1.1 Site-specific designs developed for coastal protection, rehabilitation and biodiversity conservation measures

Output 2.1.2 Long-term Stewardship agreements for coastal protection and rehabilitation measures

Output 2.1.3 Bern-Top-Barriers (BTBs) installed along the deep-water shoreline adjacent to Asau village

Output 2.1.4 Rehabilitated berm vegetation cover near Motufoua High School and Asau Village

Component 3: Monitoring, learning, knowledge products and scaling M&E (incl. monitoring system, learning reviews, toolkit/replication products)

Outcome 3: Knowledge generated for replication; adaptive management strengthened

Output 3.1.1. A community-based Monitoring Framework developed and implemented

Output 3.1.2. Tuvalu atoll Hybrid NbS/EbM toolkit developed

Output 3.1.3. Annual learning reviews conducted and integrated into adaptive management approaches

Output 3.1.4. Learning events hosted