2. Principles of appraisal
The flood risk management planning process can be viewed as a hierarchy of appraisal and decision-making, beginning with a high level assessment ( SEPA's National Flood Risk Assessment) and becoming increasingly more detailed (from flood risk management plans to the selection of individual projects). As outlined in section 5 of Delivering Sustainable Flood Risk Management, all appraisals should go through at least the three stages outlined in figure 1. Guidance on each stage is provided below.
Figure 1 Stages in appraisal
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