d data needs. In this paper, we present a trial approach of “just good enough” hazard modelling, using simplified but typical initial conditions and bold but reasonable parameterizations, to allow adequately realistic simulation of hazard events. This trial was run in a two-day participatory workshop with urban development departments of Quito municipality. Rapid participatory modelling proved effective in introducing hazard modelling to those without previous experience, fostering important discussion around hazard impacts and knowledge gaps, and opening broader planning dialogues across stakeholders, which is a critical first step in decision support and policy development.

28:T468,

Across the urban global South, flood adaptation is too often framed as a technical exercise, even though the deepest risks are concentrated in informal settlements shaped by long-running social and spatial injustices. This paper reframes flood adaptation as a justice project, asking who is protected, who is displaced and whose knowledge and claims to space shape decisions about risk. Using a qualitative, document-based comparison of 13 informal settlements across Africa, Asia and Latin America, the paper identifies recurring ‘infrastructures of exclusion’, planning by omission and partial participation that stratify resilience. The paper proposes a Justice-Oriented Framework for Flood Adaptation (JOFFA), integrating distributive, procedural, recognitional and spatial justice into operational tools such as equity audits, citizen mapping, justice scorecards and spatial justice dashboards. Grounded in practices from Mukuru, Khayelitsha, Dharavi, Vila Autódromo and nine other sites, the paper advances a seminal agenda for co-produced, justice-driven flood adaptation in the urban global South and beyond.

29:T425,

Co-production in urban shaping can future-proof emergent neighbourhoods against disasters and help them adapt to climate change. But to be effective, co-production processes need to understand and work with the complexities on the ground, drawing on a “dialogue of knowledges” among civil society, the state and academia. This paper reflects on 10 years of work in Comuna 8, Medellín, where disaster risk management (DRM) has become a key driver of community mobilization. It traces the evolution of a uniquely continuous sequence of participatory action-research projects around DRM in self-built neighbourhoods involving all these actors, linking community activism, scientific knowledge and policymaking. It highlights the diversity and capacities of community organizations and other actors that support them and how their interactions with state actors have evolved. It also demonstrates the emergence of an integrated approach to DRM and climate change adaptation from a bottom-up understanding of the complexities of place.

2a:T489,

Cascading impacts of climate change and rapid urbanization demand transformative adaptation for just futures. But operationalizing transformations continues to be a challenge. This paper presents a critical learning framework as a pathway for disaster risk reduction interventions to build adaptive capacity for transformative adaptation, facilitating fundamental changes in decision-making. This requires multiple stakeholders to critically reflect on embedded values from diverse perspectives, exploring new information and testing alternative perspectives to consider alternative choices. This can equip local actors with the knowledge, skills and relationships to help translate nascent values into transformative action. The paper explores this process through a retrospective analysis of the applied research project Tomorrow’s Cities, which worked in 10 cities to support science-informed and locally inclusive decision-making for just, risk-sensitive urban development visioning. The experience shows that critical learning can open transformative opportunities in adaptation interventions by fostering shared realizations among diverse actors.

2b:T4a1,