Mathematical models are essential tools in science and decision-making, especially for mapping water hazards. However, their standardized nature can overlook local community needs and priorities. While more detailed, localized models might seem like a solution, they are often expensive and not practical for planning processes that rely on standard models for cost-benefit analysis.

In this contribution, I explore how to balance model accuracy, community priorities, and legislative requirements using a case study from San Francisquito Creek in California. I argue that instead of creating highly complex models, it can be more effective to enhance existing standard models with input from the community. This approach supports more meaningful local engagement while still meeting planning needs.