In any case, the approach investigated more in-depth the links between the water demands and the reservoir, showing in a graph the trend of the annual deficit per water demand as a function of the reservoir volume in one week, which can be freely chosen. Figure 5 shows an example of this representation for one irrigation node, taking as a reference the volume stored in Montedoglio, at the 22th week. As can be seen, there are many years showing a deficit, as could be expected considering the lower priority of irrigation demand and especially the high-stress situation of the Montedoglio reservoir; however, the most interesting point is that once a critical deficit threshold has been set (e.g. 10%), it is possible to infer the value of the reservoir volume at the 22th week (approx. 120 Mm3) below which it is probable that this threshold is exceeded, with increases in the deficit almost directly proportional with the decrease of the available volume at the 22th week.