The International Institute for Sustainable Development (IISD) and the World Resources Institute jointly lead the SUNCASA project (Scaling Urban Nature-Based Solutions for Climate Adaptation in Sub-Saharan Africa), funded by Global Affairs Canada. The City of Johannesburg is an implementing partner. The project supports cities in designing, implementing, and scaling nature‑based solutions (Nb S) to address climate risks while delivering social and environmental co‑benefits. In Johannesburg, SUNCASA investments focus primarily on riverine and urban landscape interventions in the Jukskei River watershed that reduce flood risk, improve ecological health, strengthen climate resilience, and advance gender equality and social inclusion.

As Nb S projects mature, there is a growing need to clearly and credibly communicate their impacts—to communities, decision makers, and current and prospective funders. Data are being collected through SUNCASA monitoring frameworks, par...