Systemic flood risk management : The challenge of accounting for hydraulic interactions

摘要: Rivers typically flow through multiple flood-protected areas which are clearly interconnected, as risk reduction measures taken at one area, e.g., heightening dikes or building flood storage areas, affect elsewhere. We call these interconnections ‘hydraulic interactions’. The current approach to management, however, neglects hydraulic interactions for two reasons: They uncertain and, furthermore, considering them would require the design of policies not only striving reduction, but also accounting transfers across areas. In present paper, we compare performance identified according with those alternative formulations: One acknowledging and other including an additional decision criterion account equity in distribution Optimal first under deterministic interactions, next, they stress-tested uncertainty. found that leads a false sense equal distribution. It does, perform efficiently when risk-averse towards is taken. Accounting policies, instead, increases efficiency both considered deterministically uncertain, respectively.