to arrive at a robust deci-
sion. As with the other steps, the quality of the results needs
to be assessed through internal and external reviews that
also provide platforms for dialogues between water man-
ager, modeller, reviewer and, often, stakeholders/public.
Fig. 1 shows the key actors in the water management
pro-
cess and the above five steps in the modelling process. The
interactions between
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