“…Across the world, human‐induced climate change and extreme precipitation episodes have led to extensive stormwater problems and material damage in densely built urban areas (Bohman et al, 2020; Deely et al, 2020; Jiang et al, 2017; Kessler, 2011; Liu et al, 2019; Lund, 2018; O'Donnell et al, 2017). When conventional underground drainage systems are unable to handle stormwater, the response is to increasingly plan for blue–green infrastructure (BGI) to manage stormwater problems above ground (Alves et al, 2019; Brears, 2018; Dhakal & Chevalier, 2016; Flores et al, 2021; Ghofrani et al, 2020; Travaline et al, 2015; Wihlborg et al, 2019). BGI comprises interconnected natural elements such as rivers, streams, canals, ponds, wetlands, water reservoirs and designed landscape elements such as rain gardens, bioswales and green roofs (Liao, 2019; Oral et al, 2020).…”