Fields of View and Azim Premji University seek to develop and pilot a tool using which urban residents can plan for water security. The objectives are to (i) test a participatory planning tool to facilitate dialogue among citizens, and between citizens and the government, on coping with climate change; (ii) enable participation of citizens as co-sharers of the responsibility of knowing about and managing a commons; and (iii) identify requirements and challenges of designing and implementing such a tool.