Flooding and alternative forms for risk assessment

So over the last series of blogs I have written down nearly a dozen ideas for what we can discuss, research and write about. This is one I am really serious about- I see it as the core of my research- but I don't know what it looks like really- just a jumble of ideas. 

As you may know one component of my research interest is to show that there is a mismatch between actual and 'expert defined' flood risks. By that I mean, as an example, fema's flood plain maps. My interest is not in 'updating' the models to get a more accurate fit, but rather integrating a plurality of 'assessments' or conceptual models of risk that are more 1) inclusive (of heterogenous perspectives) 2) dynamic (update or adapt based on new knowledge) and 3) owned (again, just a jumble if ideas, but here I am thinking of both active choice, or consensus building, or even par in that people have an active voice in decision making and have 'agreed'(committed) and that the decision is context specific, relevant, or fit. The (big!) question I have is how I can design a process for developing this alternative measure of flood risk?