Background: Flooding is one of the most complex natural hazards and is expected to affect more people than any other. To reduce these impacts, research has shifted to more dynamic resilience-based approaches, including community flood groups. However, these groups can waver in their functionality and longevity, which is not well understood Aim: To understand and analyse potential community flood group sustainability factors through utilising knowledge from group members as well as previous research (pilot study and desk study) Design and method: Quali-quantitative analysis of online questionnaires, containing both open and closed questions. 132 responses were collated for analysis. These were analysed using reflexive thematic analysis and NVivo. Results: Over 69 factors were identified and sifted to produce a final 50 factors, split into 6 overarching themes. Many of the factors focused on communication, collaborations, relationships with Key Flood Actors, education and knowledge and group dynamics. These will be taken into consideration in the next stage of the wider research project. Conclusions: Community Flood Group members identified many potential strengths and weaknesses of their groups, which has allowed for potential sustainability factors to be identified and taken on to future phases.