Scenario-based performance assessment of green-grey-blue infrastructure for flood-resilient spatial solution: A case study of Pazhou, Guangzhou, greater Bay area

•A scenario-based framework is proposed to rank infrastructure spatial designs.•A coupled model assesses flood performance in spatiotemporal scales.•A dynamic multi-criteria decision-making method considers temporal indicators.•Waterway connectivity and green space redundancy improve flood resilience.•Waterway storage improvement outperforms green space runoff reduction at source.