Integrated Catchment Restoration and Nature-Based Solutions for Climate Resilience

Project Context

Fiji’s communities and ecosystems face growing pressures from climate hazards, including flooding, coastal erosion, salt water intrusion and growing water insecurity. In the Nasivi River Basin, located in the Tavua District of Ba Province, land degradation, poor soil management, and the loss of riparian buffers and coastal ecosystems have compounded these risks, leaving both midstream and downstream communities increasingly vulnerable.

Under GGGI’s “Mainstreaming Adaptation at the Local Level in Fiji” project, ICEM was commissioned to undertake a feasibility study for the application of an integrated Ridge-to-Reef (R2R) management approach in the Nasivi Basin. This study aims to support integrated land water management, restore critical ecosystem functions, and establish a robust foundation for scalable, climate-resilient solutions across vulnerable catchments in Fiji.

Objectives

The project aims to:

  • Assess the feasibility of an integrated Ridge-to-Reef management approach in the Nasivi Basin, combining upstream catchment restoration and soil management with downstream nature-based solutions for flood mitigation and coastal protection.
  • Generate a replicable model for integrated catchment management that can be applied to other vulnerable catchments across Fiji.
client:
GGGI
LOCATION:
Fiji
TIME:
October 2025
to February 2026

TAGS

Climate Change, Disaster Risk Reduction, Project description, Water
Fiji
Current Projects

Activities

ICEM’s technical work spans three interconnected areas:
  • Field-based Surveys and Diagnostics: Conducting water and soil sampling, ecosystem and habitat surveys, drone and GNSS surveys, community consultations, climate risk and vulnerability assessments, critical asset mapping, and livelihood and gender assessments across the Nasivi Basin study area.
  • Hydrological Modelling and Vulnerability Assessment: Carrying out basin hydrology and sediment modelling, flood hydrodynamic modelling, coastal sediment transport analysis, and GIS-based hotspot and vulnerability mapping to characterize risks and inform intervention design across the Nasivi Basin.
  • Options Analysis and Roadmap: Identifying and screening Ridge-to-Reef intervention options across the Nasivi landscape, preparing concept designs and preliminary cost estimates, and developing a Recommendations Report and implementation roadmap for scaling Ridge-to-Reef management across Fiji.

RECENT PROJECTS