This document outlines a rationale for developing guidance on applying the OECD Principles on Water Governance to flood risk governance. It proposes a methodology using a checklist to assess governance arrangements across the five stages of flood risk management. The checklist will be used to collect case studies from different scales to provide examples and identify good practices. Peer reviewers and experts will provide feedback on the robustness of the methodology and checklist before case studies are collected in September and a working paper is developed in November. The goal is to apply the water governance principles to other sub-sectors like droughts and groundwater.